The Complete House & Garden Nutrients Guide for Cannabis (2026): Soil, Cocos, Aqua Flakes, Shooting Powder, and the Medium-Specific Philosophy That Defines the Brand

House & Garden is the Dutch-origin premium brand with medium-specific bases and Shooting Powder as the signature finisher. The retailer's complete 2026 guide.

A coco grower walked into the shop last month frustrated with his Canna program. He'd been running Canna Coco A & B with Cannazym and Rhizotonic for three cycles, getting solid yields but bland flower that didn't have the terpene punch he wanted. He asked if House & Garden was worth the switch. The honest answer: yes for terpene quality, with caveats. H&G's Cocos A & B is genuinely different chemistry from Canna's Coco A & B, even though both are Dutch-origin premium brands targeting the same medium. The bigger difference is the additive ecosystem. Canna's lineup is streamlined (5-6 products including additives). H&G's lineup is 10-12 products if you run the full program, with two flagship additives that earn the brand its cult following: Roots Excelurator Gold and Shooting Powder. Shooting Powder in the final 2-3 weeks of bloom is the single product that distinguishes a serious H&G grow from any other brand. The catch: the bases run "low nitrogen" by Dutch design, which means American longer-veg growers either need to run the chart at full strength (not the half-strength instinct that works for AN's strong bases) or supplement with H&G Nitrogen Boost.

This pillar is the retailer's complete operational manual for House & Garden in 2026. The medium-specific base design explained at the chemistry level, the low-nitrogen quirk and how to handle it, the additive ecosystem with explicit core-vs-nice-to-have classification, the Shooting Powder deep dive, the complete feed chart with the chart-trust discipline, head-to-head vs Canna (the closest Dutch-origin competitor), cost economics in real numbers, and the honest case for and against. We sell the complete H&G lineup at Modern Farms along with the Bluelab meters, Hydrologic RO filtration, and supporting equipment any H&G program needs. We have no contractual reason to push H&G over Athena or HGV or Heavy 16. The case below is the honest one.

The 30-Second Answer (For People Who Just Want to Decide)

House & Garden is the Dutch-origin premium cannabis nutrient brand founded by William Van de Zwaan, manufactured in Humboldt County's Emerald Triangle. The brand's structural signature is three medium-specific two-part bases: Soil A & B for soil, Cocos A & B for coco coir, Aqua Flakes A & B for recirculating hydroponics. This is meaningfully different from Athena, Heavy 16, HGV, and Drip Hydro, which use universal bases across all media. The H&G philosophy: each medium has different ion-exchange behavior, so each gets its own optimized base.

The bases run intentionally low-nitrogen because they were designed for Dutch SoG-style flowering (cuttings flowered straight from clone with minimal veg). American growers veg longer and need more nitrogen during the build-up. The operational fixes: run the bases at full chart strength (not half-strength), or supplement with H&G Nitrogen Boost in veg. Forum signal across 15+ years confirms this is the brand's biggest operational quirk for American growers.

The additive ecosystem has 8-10 products. The two flagship additives that earn the brand its loyalty: Roots Excelurator Gold (root development from clone through stretch) and Shooting Powder (late-flower finisher that produces tighter, denser, more resinous buds). Many H&G users report Shooting Powder is the single product that distinguishes the brand from competitors. Cross-brand growers (running Athena or Heavy 16 bases) sometimes buy Shooting Powder specifically as the finisher.

Per-gallon cost at peak flower with the full program: $0.30 to $0.50, putting H&G in the premium-additive-heavy tier. Cheaper than Advanced Nutrients' full Grand Master schedule. More expensive than Athena Pro ($0.05-0.08) and HGV Dry ($0.06-0.10). Roughly comparable to Heavy 16 with full additives. The premium reflects the Dutch craft positioning and the additive ecosystem.

Buy H&G if you grow terpene-focused cannabis in coco or recirculating hydro, you want a craft brand with deep additive options, you appreciate Dutch design philosophy, and you're willing to run a chart with 8-10 bottles. Skip H&G if you want streamlined 3-formula simplicity (HGV is the right call), if absolute lowest per-gallon cost matters (Athena Pro wins), or if you're a first-time grower who needs pH Perfect-style forgiveness (Advanced Nutrients fits better).

The House & Garden Lineup, Mapped by Role

The complete program has 11+ products across base nutrients and additives. Worth mapping cleanly because the SERP doesn't.

The medium-specific base nutrients

• H&G Soil A & B: two-part base for soil-based growing media. The bases are buffered for soil's CEC behavior and longer slow-release dynamics. Used throughout veg and flower.
• H&G Cocos A & B: two-part base for coco coir. Calibrated for coco's specific cation exchange capacity and the drain-to-waste irrigation discipline coco demands. The most-recommended H&G base for North American cannabis growers.
• H&G Aqua Flakes A & B: two-part base for recirculating hydroponic systems (DWC, RDWC, NFT, ebb-and-flow). Designed for continuous water-flow environments where pH and EC stability matter more than CEC interaction.

The core additives (essentially required for the brand to perform)

• H&G Roots Excelurator Gold: a root development biostimulant used from clone through stretch (week 2 of flower). The Gold formulation is the upgraded version with stronger root-zone effects. Distinctive small bottle with gold cap. Often called the brand's "must-have" additive alongside the bases.
• H&G Drip Clean: a salt-buildup prevention agent used with every feeding. Uses ionic bond chemistry rather than corrosive cleaning, so it doesn't damage beneficial microbes. Cuts flush time at the end of cycle from 1-2 weeks to 3-4 days.

The signature late-flower additives

• H&G Bud XL: a sugar-mobilization additive used from week 4 of flower onward. Increases bud weight and density by mobilizing sugars from leaves into developing flowers.
• H&G Top Booster: a P-K spike additive used for a 4-day exposure in week 5 of flower. Creates an "optical drought" effect that triggers more aggressive flowering response.
• H&G Shooting Powder: the brand's flagship finisher. Used in the final 2-3 weeks of bloom (typically weeks 6-8 of an 8-week flower or weeks 7-9 of a 9-week flower). Produces a "second bloom" effect with tighter nodes, denser flowers, and noticeably elevated resin production. Comes in single-use sachets that mix into a fresh reservoir.

The supporting additives (nice-to-have, not required)

• H&G Amino Treatment: amino acid supplement used in veg and early flower for vigor.
• H&G Nitrogen Boost: the fix for the brand's low-nitrogen base design. Added in veg through stretch for American growers running longer veg cycles.
• H&G Multi Zen: a growth promoter providing readily-available nutrients that boost uptake rates.
• H&G Algen Extract: kelp-based biostimulant for stress resistance.
• H&G Magic Green: foliar spray formulation for the early-flower stages.
• H&G Top Shooter: alternative finisher product (positioned as a complement to or substitute for Shooting Powder depending on grower preference).
• H&G Clearex: salt-leaching flush agent for end-of-cycle flush.

What this map gets you

A first-time H&G buyer picks one base set (Cocos for coco, Aqua Flakes for hydro, Soil for soil) plus Roots Excelurator Gold and Drip Clean as the operational core. Bud XL, Top Booster, and Shooting Powder as the late-flower signature stack. Nitrogen Boost if running longer American veg. Everything else is optional. The streamlined first-cycle purchase is 5-6 products (base A&B + Roots Excelurator Gold + Drip Clean + Shooting Powder). The complete program with all additives is 11-13 products.

The Medium-Specific Base Design (The Article's Signature Section)

This is what makes H&G different from every other premium brand. Worth a full section because the SERP doesn't explain the chemistry clearly.

Why three separate base lines

The comparison across the premium cannabis nutrient category in 2026:

• Athena, HGV, Heavy 16, Drip Hydro, Advanced Nutrients, CANNA Aqua/Coco/Terra: mostly use universal base nutrients with stage-specific ratio adjustments. Some have separate lines (Canna Coco vs Aqua vs Terra) but the underlying chemistry approach is shared across lines.
• House & Garden: three structurally different base formulations with chemistry calibrated for each medium's ion-exchange behavior.

The technical argument: coco coir has 40-100 cmol/kg cation exchange capacity that binds calcium, magnesium, and potassium preferentially. Soil has variable but generally higher CEC plus active organic matter that releases nutrients slowly. Recirculating hydroponics has zero CEC and continuous water flow over roots. Each medium's optimal nutrient ratio differs substantially. H&G's argument: optimize the base for the medium rather than designing one universal base that works "well enough" in all three.

The Cocos A & B design

Cocos is designed for coco's specific CEC behavior. The formulation includes calcium and magnesium ratios calibrated for coco's tendency to bind calcium preferentially (which is why most coco programs on other brands require CalMag supplementation). H&G's Cocos contains more calcium and magnesium than most universal bases, reducing CalMag supplementation needs for coco growers running RO water.

Operational implications: Cocos A & B users on RO water typically need 5 mL/gallon of CalMag once a week (per the brand's own published guidance) rather than the daily supplementation many other coco programs require. The base does most of the cal-mag work.

The Aqua Flakes A & B design

Aqua Flakes is designed for recirculating hydroponics. The formulation prioritizes pH stability across continuous-flow reservoirs, with chelated micros that remain plant-available in long-duration hydroponic environments. Cleaner mineral inputs than Cocos because there's no medium buffering pH drift; the reservoir chemistry has to hold itself stable.

Operational implications: Aqua Flakes is the right pick for DWC, RDWC, NFT, and ebb-and-flow systems. Forum signal confirms cleaner reservoir behavior than running Cocos A & B in a hydroponic system (which the brand explicitly discourages despite some growers attempting it).

The Soil A & B design

Soil is designed for soil-based and peat-heavy soilless mixes. The formulation accommodates soil's slow-release dynamics with lower-concentration macros relative to Cocos and Aqua Flakes. The chemistry assumes the soil itself contributes nutrition through organic matter mineralization; H&G Soil supplements rather than fully feeds.

Operational implications: Soil A & B at chart strength produces underwhelming results in inert media or hot soilless mixes. Use Cocos for coco, Aqua Flakes for hydro; Soil is specifically for true soil and peat-based mixes with organic content.

The honest qualifier

The medium-specific design is genuinely different chemistry. Whether it produces meaningfully different yields versus universal bases is harder to prove. Athena Pro Line, HGV Dry, and Drip Hydro POWDERS all produce excellent yields across coco, rockwool, and DWC with universal bases. The H&G approach is technically defensible but isn't categorically superior. The brand's design philosophy is one valid approach; the universal-base brands' approach is another valid approach.

What H&G's medium-specific design definitely delivers: less CalMag supplementation in coco, cleaner reservoir behavior in hydro, and a brand experience that signals craft-grade attention to medium-specific optimization. For growers who value the Dutch craft philosophy, this matters. For growers focused on absolute yield per dollar, the universal-base brands may win on cost economics without losing yield.

The Low-Nitrogen Quirk (How American Growers Handle It)

The brand's biggest operational quirk for American growers. The bases are intentionally low-nitrogen by Dutch design, which creates predictable problems if you treat them like Athena or AN bases.

The Dutch flowering style context

House & Garden was designed in Holland for Dutch SoG (sea-of-green) cannabis cultivation. The Dutch style: take rooted clones, flip immediately or after 1-2 weeks of veg, flower out at 18-24 inches tall, harvest fast turns. The plants never build large vegetative biomass; they're essentially flowering machines that produce one dominant cola per plant.

This style requires far less nitrogen than American long-veg cultivation. American growers veg 4-6 weeks (or longer), topping and training plants to fill 4x4 or larger footprints with multi-branch structures. The American plant needs nitrogen across a longer build-up before nitrogen demand drops in flower.

H&G's base nutrients (Soil, Cocos, Aqua Flakes A & B) were calibrated for the Dutch style. Run them on American long-veg plants without adjustment, and you'll see nitrogen deficiency in veg: pale lower leaves, slow vegetative growth, sluggish stretch.

The community half-strength instinct

Many growers coming from Advanced Nutrients or other premium brands have an instinct to "start at half-strength and ramp up." This works for AN because AN's bases are concentrated. With H&G, the half-strength instinct compounds the low-nitrogen problem; you end up running at quarter-strength of what the plant actually needs.

The fix: run H&G bases at full chart strength from the start in veg, not half. The chart already accounts for the brand's lower-concentration design.

The Nitrogen Boost solution

H&G's own answer to the low-nitrogen issue: the Nitrogen Boost additive. Add 1-2 mL per gallon during veg and the first 2 weeks of flower for American long-veg cycles. The Nitrogen Boost supplies the additional nitrogen that Dutch-design bases assume comes from the plant's lower demand.

Growers who follow this protocol report robust vegetative growth, healthy stretch, and clean transition into the heavier-bloom additive stack (Bud XL, Top Booster, Shooting Powder) for the back half of the cycle.

The chart-trust discipline

This is the second discipline that defines H&G runs. The brand uses ml/gallon dosing similar to Heavy 16; growers are explicitly told to follow the chart and not chase EC numbers. The brand provides a free iOS/Android app (House & Garden Nutrient App) and web calculator with customization for 1-7 week veg, 6-12 week flower, and profile saving for multiple rooms or strains.

Forum signal across 15+ years is consistent: growers who follow the chart religiously produce the brand's reputation-level yields. Growers who improvise (skipping additives, modifying dose ratios, running half-strength) underperform. The chart-trust is non-negotiable for the brand to perform.

The Shooting Powder Deep Dive

The brand's signature product and the reason serious growers stay loyal. Worth its own section because the SERP underexplains what Shooting Powder actually does.

What Shooting Powder is

Shooting Powder is a late-flower P-K finisher delivered in single-use sachet form. Each sachet mixes into a fresh reservoir at the start of the finishing weeks. The formulation is heavy in phosphorus and potassium with supporting micronutrients calibrated for late-flower ripening.

The "second bloom" effect

The brand's marketing claim: Shooting Powder produces a "second bloom" effect in the final weeks where flowers tighten up, internodes shorten, and resin production accelerates noticeably. Forum signal across 15+ years validates the effect; many growers report visible improvement in finishing quality versus the same genetics finished without Shooting Powder.

The mechanism: the aggressive P-K spike late in flower drives the plant to allocate maximum resources into existing flower sites rather than continuing vegetative or new-flower production. The result is denser, heavier, more resinous finishing buds.

The standard protocol

For 8-week flower cycles:

• Week 6: full Shooting Powder dose. Feed-feed-water schedule (two feeds, then plain water, repeat).
• Week 7: half dose. Same feed-feed-water schedule.
• Week 8: one full dose at the start of the week. Begin flush.

For 9-10 week flower cycles, shift the schedule one week later (start Shooting Powder week 7 instead of week 6).

The cross-brand reputation

Shooting Powder has cross-brand cult status. Growers running Athena, Heavy 16, HGV, or other premium brands sometimes buy Shooting Powder specifically as the late-flower finisher even when running another brand's bases and additives. The brand reputation is strong enough that the single product is a draw across the cannabis nutrient community.

For H&G growers, Shooting Powder is essentially required to get the brand's reputation-level results. Skipping it means giving up the brand's most distinctive late-flower contribution.

The cost reality

Shooting Powder is sold in boxes of single-use sachets. Each sachet treats a defined reservoir volume. For a typical 4x4 hobby grow consuming 5-10 gallons per feeding, one sachet covers 1-2 feedings. The 3-week finishing protocol uses 6-9 sachets per cycle. Cost per cycle: $40-70 depending on package size and reservoir volume.

For commercial scale, Shooting Powder is sold in larger bulk formats. Per-gallon cost decreases substantially at commercial volumes.

The Complete Feed Chart (Hydro, Coco, Soil)

H&G publishes detailed feed charts for each base line. The chart values are in ml/gallon for the relevant base plus additives. Representative schedule for Cocos A & B with the standard additive stack on an 8-week flower cycle:

Veg (weeks 1-4 of veg)

• Cocos A: 2-5 mL/gal (ramping)
• Cocos B: 2-5 mL/gal (equal to A)
• Roots Excelurator Gold: 1 mL/gal
• Drip Clean: 0.2 mL/gal (continuous low dose)
• Nitrogen Boost (for American long-veg): 1-2 mL/gal
• Amino Treatment: 1 mL/gal (optional, weekly)
• pH: 5.8-6.2
• RO water with CalMag: 5 mL/gal once weekly

Stretch (weeks 1-3 of bloom)

• Cocos A: 5-7 mL/gal
• Cocos B: 5-7 mL/gal
• Roots Excelurator Gold: 1 mL/gal (through week 2 of bloom)
• Drip Clean: 0.2 mL/gal
• Bud XL: begin week 3 at 2 mL/gal
• Multi Zen: 1 mL/gal (optional)
• pH: 5.8-6.2

Mid-bloom (weeks 4-5)

• Cocos A: 7-8 mL/gal
• Cocos B: 7-8 mL/gal
• Drip Clean: 0.2 mL/gal
• Bud XL: 4 mL/gal
• Top Booster: 4-day window in week 5 at 4 mL/gal (do not run full week)
• pH: 5.8-6.2

Late bloom (weeks 6-7)

• Cocos A: 6-7 mL/gal
• Cocos B: 6-7 mL/gal
• Drip Clean: 0.2 mL/gal
• Bud XL: 4 mL/gal
• Shooting Powder: full dose week 6, half dose week 7, feed-feed-water schedule
• pH: 5.8-6.2

Final flush week (week 8)

• Stop base nutrients and most additives
• Clearex salt-leaching agent: full dose for 1-2 days, then plain RO water
• Or run H&G's reservoir-flush protocol with plain water for the final 5-7 days

The mixing order

Per H&G's published guidance, mix in this sequence:

1. Start with RO water (or tap below 0.4 EC if not RO)
2. Add CalMag supplement (5 mL/gal weekly on RO water)
3. Add Roots Excelurator Gold (if applicable for stage)
4. Add Cocos A (or relevant base A), stir thoroughly
5. Add Cocos B (or relevant base B), stir
6. Add Nitrogen Boost (if using), stir
7. Add bloom additives in order: Bud XL, Top Booster (in week 5), Multi Zen
8. Add Drip Clean last
9. Wait 10 minutes for equilibration
10. Check pH (target 5.8-6.2); adjust with pH Down if needed (H&G bases naturally drift slightly high)

The RO + CalMag discipline

H&G explicitly recommends RO water for the published feed schedule. On RO, supplement CalMag at 5 mL/gal once per week. On moderately hard tap water (200-400 ppm hardness), skip CalMag; the tap water's mineral content covers it. On very hard tap water (above 400 ppm), the brand recommends switching to RO; the chart's intended ratios don't work cleanly above that hardness level.

Cross-reference: our Hydrologic RO buyer's guide covers the filtration setup any H&G program depends on. Our EC and pH reservoir management pillar covers the foundational reservoir hygiene every nutrient program requires.

House & Garden vs Canna Head-to-Head

The closest competitor in the premium cannabis nutrient category. Both are Dutch-origin brands targeting the same medium-focused growers. The choice between them comes down to additive ecosystem and brand experience.

What they share

• Dutch-origin design philosophy with European cannabis nutrient heritage
• Medium-specific base lines (Canna Coco, Canna Aqua, Canna Terra; H&G Cocos, Aqua Flakes, Soil)
• Premium-tier pricing in the $0.25-0.50 per-gallon range at peak flower
• RO water requirement for published feed schedules
• Established additive ecosystems
• 15+ years of cannabis grow community trust

Where Canna wins

Consistency through the cycle. Canna's bases produce more uniform plant response from clone through harvest. Forum signal consistently reports "Canna provides consistent results throughout the lifecycle of the plant, while H&G suffers during veg and early flower then making up the difference during peak flower." If predictable performance across all stages matters more than peak-flower finishing quality, Canna wins.

Streamlined product count. Canna's full program is 5-7 products including additives (Coco A&B + Cannazym + Rhizotonic + PK 13/14 + optional Cannaboost). H&G's full program is 11-13 products. Fewer SKUs to stock, fewer mixing decisions, fewer chances for error.

Established cannabis-community standard. Canna Coco A & B is arguably the most-used coco nutrient in cannabis cultivation worldwide. The community knowledge base for Canna is broader and deeper than for H&G.

Where H&G wins

Late-flower finishing quality. Shooting Powder is the single product Canna doesn't have a clean equivalent for. The "second bloom" effect produces tighter, denser, more resinous finishing buds. For terpene-focused and finished-product-quality growers, H&G's late-flower additives are the brand's strongest advantage.

Roots Excelurator Gold. H&G's root development biostimulant has a stronger reputation than Canna's Rhizotonic for early-cycle root mass development. Growers who switch from Canna to H&G often cite Roots Excelurator Gold as one of the noticeable improvements.

Medium-specific calcium and magnesium chemistry. H&G Cocos A & B requires less aggressive CalMag supplementation than Canna Coco A & B. The chart-published CalMag rate (5 mL/gal weekly on RO) is lower than most coco programs require.

The decision rules

Want consistent results from clone through harvest with the smallest product count: Canna.

Want maximum late-flower finishing quality with willingness to run 10+ bottles: H&G.

Want established cannabis community knowledge base for troubleshooting: Canna.

Want the craft brand experience with extensive additive options: H&G.

For coco growers specifically: both work excellently. The choice is mostly preference for additive philosophy.

Cross-reference: our nutrient brand comparison pillar (AN vs House & Garden vs CANNA vs Athena) covers the head-to-head across the major premium brands.

The Cost Economics

H&G's pricing puts it in the premium-additive-heavy tier.

Per-gallon cost at peak flower (2026 retail)

• H&G base only (Cocos A & B at chart strength): $0.10-0.15 per gallon
• H&G streamlined program (base + Roots Excelurator + Drip Clean): $0.20-0.25 per gallon
• H&G full program (base + Roots Excelurator + Drip Clean + Bud XL + Top Booster + Shooting Powder + Multi Zen): $0.40-0.50 per gallon

Comparison context across the premium tier

• Athena Pro Line: $0.05-0.08 per gallon (cheapest premium dry)
• HGV Dry: $0.06-0.10 per gallon
• Athena Blended: $0.15-0.25 per gallon
• Drip Hydro POWDERS: $0.15 per gallon
• CANNA Coco A&B with additives: $0.25-0.40 per gallon
• H&G full program: $0.40-0.50 per gallon
• Heavy 16 full program: $0.50-0.70 per gallon
• Advanced Nutrients full Grand Master: $0.55-0.80 per gallon

The annual math for a 4x4 grow (200 gallons/year)

• H&G full program: $80-100 per year
• H&G streamlined: $40-50 per year
• Athena Pro Line: $10-16 per year
• HGV Dry: $12-20 per year
• Heavy 16 full program: $100-140 per year

The honest framing

H&G isn't cheap. The full program is roughly 5-6x more expensive per gallon than Athena Pro Line. The premium buys you Shooting Powder's finishing effect, Roots Excelurator Gold's root development, the medium-specific base chemistry, and the Dutch craft brand experience. For growers who prioritize terpene quality and finished-product distinction over absolute cost efficiency, H&G is worth the spend. For commercial-scale operations focused on per-gallon math, Athena Pro or HGV Dry deliver excellent results at substantially lower cost.

The cluster of articles we've written covers this comparison in detail. The Athena pillar explains the stacked-EC cost-leader approach. The HGV pillar covers the 3-formula simplicity at low cost. The Heavy 16 pillar covers the terpene-focused premium tier H&G competes in directly.

The Case For and Against House & Garden

The retailer-honest assessment.

Buy House & Garden if

• You're a terpene-focused coco grower who values late-flower finishing quality. Shooting Powder is the single product that distinguishes H&G from competing premium brands.
• You appreciate the Dutch craft brand experience and the medium-specific base philosophy.
• You're willing to run a chart with 8-10 bottles and trust ml/gallon dosing without chasing EC.
• You're growing in coco or recirculating hydro (both H&G's strongest media); coco with Cocos A & B is the brand's most-recommended setup.
• You're switching from Canna and want stronger late-flower finishing; H&G's late-flower additive stack is the upgrade.
• You're switching from Advanced Nutrients and want a more focused product lineup at lower per-gallon cost.

Skip House & Garden if

• You want the absolute lowest per-gallon cost. Athena Pro Line and HGV Dry are 5-6x cheaper.
• You want streamlined 3-formula simplicity. HGV is the right call (3 formulas vs H&G's 11+).
• You're a first-time grower who needs pH Perfect-style forgiveness. Advanced Nutrients fits the learning curve better.
• You're growing in true living soil with active microbial communities. H&G's mineral salt-based bases compete with soil microbiology even though the brand offers a Soil line. Consider Roots Organics or BioBizz instead.
• You're not willing to run the full additive stack. H&G's bases at chart strength without additives produce underwhelming results compared to the brand's reputation; you need at least Roots Excelurator Gold and Shooting Powder to get the brand's value.

The learning curve

The first cycle on H&G typically requires recalibrating your dosing mental model. Growers coming from concentrated bases (AN, Athena) need to run H&G bases at full chart strength rather than half. American long-veg growers need to add Nitrogen Boost. The chart-trust discipline (ml/gallon dosing, not EC chasing) takes 1-2 cycles to internalize. After that, the brand becomes operationally simple in execution if not in product count.

Specific 2026 Product Picks and Starter Kits

Modern Farms stocks the complete H&G lineup.

The H&G Streamlined Coco Kit (first cycle, 4x4 tent)

The minimum recommended program. Validates the brand without the full additive spend.

• H&G Cocos A & B (1L each): $45 + $45 = $90
• H&G Roots Excelurator Gold (100 mL): $50
• H&G Drip Clean (500 mL): $25
• H&G Shooting Powder (small box): $35
• Botanicare CalMag Plus (1 quart): $15
• Subtotal: approximately $215 for 1-2 cycles of feeding

The H&G Full Coco Kit (committed cycle, 4x4 to 5x5 tent)

The complete program with the full additive stack.

• H&G Cocos A & B (4L each): $130 + $130 = $260
• H&G Roots Excelurator Gold (250 mL): $95
• H&G Drip Clean (1L): $40
• H&G Bud XL (1L): $40
• H&G Top Booster (1L): $35
• H&G Shooting Powder (full box): $60
• H&G Nitrogen Boost (1L, for American long-veg): $30
• H&G Multi Zen (1L, optional): $35
• Botanicare CalMag Plus (1 gallon): $45
• Subtotal: approximately $640 for a full year of feeding a 4x4

The H&G Aqua Flakes Hydro Kit (DWC, RDWC, NFT)

For recirculating hydroponic systems.

• H&G Aqua Flakes A & B (4L each): $130 + $130 = $260
• H&G Roots Excelurator Gold (250 mL): $95
• H&G Drip Clean (1L): $40
• H&G Bud XL (1L): $40
• H&G Shooting Powder (full box): $60
• Botanicare CalMag Plus (1 gallon): $45
• Subtotal: approximately $540 for a full year of feeding a hydro setup

The supporting equipment

• Bluelab Combo Meter: $290 (for daily reservoir pH and EC checks)
• Hydrologic Stealth-RO 150: $300 (for RO water; required for chart accuracy)
• Accurate measuring cylinders or graduated cups: $20

Cross-reference: our Bluelab buyer's guide covers the meter selection. Our Hydrologic RO buyer's guide covers the RO filtration setup. The 4x4 grow tent setup guide includes the integrated build.

Common House & Garden Problems and Diagnostic Logic

"Plants showing nitrogen deficiency in veg"

The most common H&G complaint. Cause: running the bases at half-strength instead of full chart strength, or not adding Nitrogen Boost for American long-veg cycles. Fix: bump bases to full chart strength immediately. Add Nitrogen Boost at 1-2 mL/gal. Symptoms should resolve within 7-10 days.

"pH keeps drifting high"

Some H&G base chemistry naturally drifts slightly high in solution. Normal for the brand. Adjust with pH Down (phosphoric or citric acid) at mixing to land in 5.8-6.2 range. If pH drift exceeds 0.5 per day in your reservoir, check input water hardness (above 0.4 EC input throws off the chart) and reservoir temperature (above 72°F accelerates pH drift).

"Yields aren't matching forum claims"

Three common causes. First, not running Shooting Powder (the brand's signature finisher; skipping it costs 10-20% of finished-product quality). Second, not running Roots Excelurator Gold from clone (root development affects entire-cycle vigor). Third, half-strength bases throughout the cycle (run full chart strength on H&G; the chart already accounts for the brand's lower-concentration design).

"Shooting Powder not producing the second bloom effect"

Verify timing (start week 6 of an 8-week flower, week 7 of a 9-week, week 8 of a 10-week). Verify feed-feed-water schedule (full dose, full dose, plain water, repeat). Verify environmental conditions (Shooting Powder works best at proper finishing-stage humidity, 45-55% RH; high humidity in late flower mutes the effect). Verify strain genetics (some indica-dominant strains finish naturally without dramatic late-flower changes; the effect is more visible on hybrid or sativa-dominant genetics).

"CalMag deficiency on RO water despite chart-recommended supplementation"

The chart specifies 5 mL/gal weekly CalMag on RO. For very-soft RO (below 5 ppm) or fast-growing strains in late flower, this may run thin. Increase to 5 mL/gal twice weekly or 3 mL/gal at every feeding. If symptoms persist, check medium EC stacking; very high stacking (above 5 mS/cm in coco) can drive lockout symptoms that mimic CalMag deficiency.

"Drip Clean making reservoir cloudy"

Normal. Drip Clean uses ionic bond chemistry that produces slight reservoir cloudiness on first addition. The cloudiness clears within 30-60 minutes as the chemistry equilibrates. Not a problem.

"Bottles settling in storage"

Normal for H&G concentrates. Shake well before each use. Cool, dark storage extends shelf life; bottles should be used within 1 year of opening per the brand's published guidance.

Cross-reference: our EC and pH reservoir management pillar contains the complete diagnostic flowchart for reservoir problems across all nutrient brands.

What We'd Tell You at the Counter

The honest summary, framed the way we'd say it face to face.

If you're a terpene-focused coco grower who values late-flower finishing quality and you're willing to run 8-10 bottles, House & Garden is worth trying. Shooting Powder is the single product that distinguishes the brand from competitors. Roots Excelurator Gold and the medium-specific Cocos A & B chemistry round out a complete program.

Run the bases at full chart strength from the start. Don't trust the half-strength instinct that works for AN; H&G bases are designed to be run at chart values. Add Nitrogen Boost in veg if you're running American long-veg cycles.

Trust the ml/gallon chart. Use your Bluelab Combo Meter as a sanity check on mixing accuracy, not as a target you're trying to hit by adjusting doses.

Supplement CalMag at 5 mL/gal weekly on RO water. The base chemistry handles most of the cal-mag work, but RO water needs the weekly top-up.

Run the full Shooting Powder finishing protocol: full dose week 6, half dose week 7, one full dose week 8 of an 8-week flower. Feed-feed-water schedule. Don't skip; this is the brand's signature.

For DWC or RDWC, use Aqua Flakes A & B (not Cocos). For coco, use Cocos. For true soil, use Soil. The medium-specific design isn't marketing; the chemistry differs.

For commercial cost economics where per-gallon math matters more than terpene finishing, Athena Pro Line or HGV Dry are the cheaper alternatives. H&G's premium reflects the additive ecosystem and Dutch craft positioning.

The cluster of articles we've written covers this brand and its competitors in detail. The Athena pillar covers the cost-leader approach. The HGV pillar covers the 3-formula simplicity. The Heavy 16 pillar covers the closest premium competitor with a different terpene-quality mechanism (Prime's organic acid chemistry vs H&G's late-flower P-K finishing). The Bluelab buyer's guide covers the meters. The Hydrologic RO buyer's guide covers the RO filtration. The coco coir guide covers the medium where H&G shines.

Modern Farms stocks the complete House & Garden lineup: Soil A & B, Cocos A & B, Aqua Flakes A & B in 1L, 4L, and bulk sizes, plus the full additive ecosystem (Roots Excelurator Gold, Drip Clean, Bud XL, Top Booster, Shooting Powder, Nitrogen Boost, Multi Zen, Amino Treatment, Algen Extract, Magic Green, Clearex). We also stock the Bluelab meters, Hydrologic RO filtration, and Botanicare CalMag that round out a complete H&G program. If you're switching from Canna and want stronger late-flower finishing, switching from Advanced Nutrients and want a tighter product lineup, or starting a first H&G cycle, we're happy to help in person or by phone. We don't upsell.