The Complete Clonex Rooting Gel Guide for Cannabis Cloning (2026): Gel, Mist, Clone Solution, and the Environmental Protocol That Determines Your Success Rate

Clonex is the canonical cannabis rooting hormone since 1988. The complete 2026 guide to Gel, Mist, Clone Solution, and the environmental protocol that hits 90%+ success.

A hobby grower walked into the shop last week frustrated with his cloning. He'd bought Clonex on our recommendation, followed the instructions on the bottle, and watched 14 out of 20 cuttings rot in his rockwool over 10 days. He wanted to know if he'd gotten a bad bottle. The honest answer: the Clonex was fine. The problem was environmental. His humidity dome was sealed tight with no daily venting (anaerobic conditions promote rot), his rockwool was saturated and dripping (stems rot in waterlogged medium), his propagation tray was sitting on a cold basement floor at 65°F (cuttings root fastest at 75-80°F), and he was using a CFL bulb at 4 inches above the dome (way too intense for cuttings, which want 175-200 PPFD of indirect light). We walked through the protocol below, he reset his setup, and his next round of 20 cuttings produced 19 rooted clones in 8 days. Same Clonex bottle. Same genetics. Different environment.

This is the truth about Clonex that the brand's own marketing doesn't emphasize: the chemistry genuinely works, but the chemistry alone doesn't determine your success rate. Forum signal across 15-plus years of cannabis cloning discussion is overwhelming on this point. Growers who nail the environment get 90-100 percent rooting success with Clonex. Growers who don't can fail with any rooting hormone on the market. The valuable content in this pillar isn't a long product breakdown; it's the complete operational manual that turns "I bought Clonex" into "I get 90 percent root success rates."

We sell Clonex at Modern Farms in every size from the 15 mL travel sachet to the 1-gallon commercial jug, plus the Clonex Mist foliar spray and Clonex Clone Solution liquid nutrient. We also stock the supporting equipment any cloning setup needs: humidity domes, seedling heat mats, Root Riot and rockwool plugs, T5 fluorescent and low-intensity LED propagation lights, Bluelab pH meters for medium pH validation. The advice below is the complete cloning protocol, not just the Clonex product manual.

The 30-Second Answer

Clonex Rooting Gel is the canonical cannabis cloning hormone since 1988, developed by Growth Technology Ltd and distributed in the US by Hydrodynamics International. The active hormone is IBA (indole-3-butyric acid) at 0.3 percent (3,000 ppm), suspended in a tenacious water-based gel matrix with vitamins, mineral nutrients, trace elements, and antimicrobial agents. The gel seals the cut tissue, prevents air embolism in the stem, and maintains continuous contact with the cutting throughout the rooting period. EPA-registered, alcohol-free, approved for all crops including food crops.

The complete Clonex product family is three products. The iconic Rooting Gel ($2.49 to $120 depending on size, 15 mL through 1 gallon). The Mist, a foliar spray for cuttings ($12.99 ready-to-use, $109.99 concentrate). The Clone Solution, a liquid nutrient designed for cuttings, seedlings, and young plants ($15 to $40 depending on size). Most growers need only the Gel; the Mist and Clone Solution are useful add-ons for serious cloners running large propagation operations.

Application is simple. Dip the fresh cutting into the gel to 1/2 to 1 inch depth, insert into a pre-soaked rooting medium (Root Riot, rockwool, peat pellet, or aeroponic cloner slot), mist with water, place in a humidity dome over a heat mat in an indirect-light environment. Roots in 7 to 14 days depending on strain and environment. The simple protocol hides the operational complexity: the environment determines whether you get 90 percent success or 20 percent failure. The pillar below walks the complete protocol.

Buy Clonex if you're cloning cannabis at any scale, you want the canonical industry-standard rooting hormone with 38-plus years of community validation, and you're willing to invest the small operational effort to get the environment right. Skip Clonex only if you're committed to an alternative you've already validated (Athena Cuts, Olivia's Rooting Gel, Dip 'N Grow). At $2.49 for a 15 mL sachet that treats 30-plus cuttings, the cost-per-clone math makes Clonex effectively free; the question isn't whether to buy it but whether to learn the technique that makes it work.

The Clonex Product Family

Three core products. Most growers know the Gel; the Mist and Clone Solution are underexplained in the SERP and worth understanding.

Clonex Rooting Gel

The iconic product. Water-based gel with 0.3 percent IBA active hormone, vitamins, mineral nutrients, trace elements, and antimicrobial agents. Sized for every scale of operation.

• Clonex Gel 15 mL sachet ($2.49): single-use foil sachet. Treats approximately 30 to 50 cuttings. Right for first-time cloners validating their technique or growers cloning occasional batches.
• Clonex Gel 100 mL ($7.99 to $15): the standard hobby size. Treats hundreds of cuttings. Shelf life 1 to 2 years sealed, 6 to 12 months after opening.
• Clonex Gel 250 mL ($25 to $30): the mid-size bottle for serious hobby growers and small commercial operations running multiple batches per year.
• Clonex Gel 1 gallon ($80 to $120): commercial scale. Treats thousands of cuttings. The right size for commercial propagation operations running weekly cloning rotations.

Clonex Mist

A foliar spray designed specifically for cuttings during the rooting phase. Different formulation from the Gel; lower IBA concentration plus mineral nutrients and vitamins delivered through the leaf surface rather than the cut stem.

• Clonex Mist ready-to-use spray ($12.99): pre-mixed spray bottle. Mist cuttings once daily during the rooting phase to supplement the gel's stem delivery with foliar nutrition. Useful for hard-to-clone strains or extended rooting timelines.
• Clonex Mist Concentrate ($109.99): commercial-size concentrate for operations running large propagation areas. Mixes into spray bottles or fogger systems.

The Mist is genuinely useful for commercial propagation operations but is optional for hobby growers. The Gel alone with proper environment produces 90-plus percent success on most strains; the Mist incrementally improves results on difficult genetics and extends the value of healthy cuttings during rooting.

Clonex Clone Solution

A liquid nutrient formulation designed for cuttings, seedlings, and young plants. Not a rooting hormone (no IBA); a low-EC nutrient with vitamins and minerals calibrated for the rooting-to-veg transition.

• Clonex Clone Solution 1 quart ($15): the hobby size. Mix at chart concentration and use as the watering solution for clones once they've rooted and need their first nutrient feedings.
• Clonex Clone Solution 1 gallon ($40): commercial size.

The Clone Solution bridges the gap between rooting and veg. Most growers transition rooted clones into regular veg nutrient programs (1/4 strength of their veg base nutrients for the first week, ramping to full strength over 7 to 14 days). The Clone Solution is an alternative for growers who want a cuttings-specific nutrient rather than diluted veg base. Useful but not essential.

The Chemistry (Why Clonex Works)

Worth understanding because it explains why Clonex outperforms generic rooting powders and why the gel format matters operationally.

IBA at 0.3 percent (3,000 ppm)

The active hormone is indole-3-butyric acid (IBA), a synthetic auxin that triggers root cell development at the cut tissue site. Cannabis stems contain naturally occurring auxins (IAA primarily) that drive root development in normal conditions, but the concentration at a cut stem is variable and often insufficient for reliable rooting within typical timelines. Applying supplemental IBA at the cut site overrides this variability and produces consistent root initiation across genetics.

The 0.3 percent (3,000 ppm) concentration is calibrated for soft-tissue cuttings like cannabis. Higher concentrations (5,000 to 8,000 ppm IBA, sold for woody cuttings) burn cannabis stems and reduce success rates. Lower concentrations (1,000 to 1,500 ppm IBA, sold for delicate herbs) produce slower rooting on cannabis. Clonex's 3,000 ppm hits the sweet spot for cannabis specifically.

The gel matrix

The water-based tenacious gel formulation is genuinely different from generic rooting powders. The gel adheres to the stem surface, sealing the cut tissue and preventing air bubbles from entering the xylem (air embolism is one of the most common cloning failure modes). The gel maintains continuous contact with the cut surface for the first 24 to 48 hours, which is when most root cell development initiates. Generic powders rub off during stem insertion into rooting medium and lose contact within minutes.

The supplemental nutrition

Clonex includes vitamins (primarily B vitamins for cellular metabolism), mineral nutrients (calcium, magnesium, potassium in plant-available forms), trace elements (iron, zinc, copper for enzymatic functions), and antimicrobial agents. The supplemental nutrition supports root cell development during the first 7 to 10 days when the cutting has no roots and cannot absorb nutrients from the medium. The antimicrobial agents reduce stem rot risk in the warm-humid environment cloning requires.

The pharmaceutical manufacturing

Hydrodynamics' marketing claim of "strict pharmaceutical laboratory conditions" is more than positioning. Inconsistent IBA concentration across bottles produces inconsistent rooting results. Generic rooting hormones sometimes test at substantially different IBA concentrations than label claims because manufacturing quality control is loose. Clonex's pharmaceutical-grade manufacturing produces bottle-to-bottle consistency that growers can rely on across cycles.

Why the chemistry matters less than the environment

All of the above is true, and the chemistry is genuinely useful. The honest framing: at proper environmental conditions, Clonex outperforms folk-tradition alternatives (honey, aloe vera, willow water) and most generic powders. Under wrong environmental conditions, no rooting hormone produces good results. The chemistry is necessary but not sufficient. The environmental protocol below is what determines whether you get 90 percent or 20 percent.

The Complete Cloning Protocol

The step-by-step protocol that turns Clonex purchases into 90 percent rooting success. This is the article's most valuable content.

Mother plant preparation (24 hours before cutting)

The mother plant's condition at cutting time substantially affects rooting success. Two preparation steps to take 24 hours in advance.

• Leach the medium with plain water: water the mother plant with plain pH-balanced water (no nutrients) 24 hours before taking cuttings. This reduces the nitrogen concentration in the stems. Lower nitrogen at the cutting moment promotes faster root development because the cutting allocates energy to roots rather than continued vegetative growth.
• Choose a healthy mother: select a mother plant in active veg or week 1 of flower that's been growing vigorously for at least 6 weeks. Older mothers (6-plus months) can produce slower-rooting clones; consider rotating your mother plants annually if you maintain a long-term mother room.

Workspace and tool sterilization

Cleanliness directly affects success rate. Forum signal across 15-plus years is consistent on this point.

• Clean your cutting surface with isopropyl alcohol (70 percent or higher)
• Sterilize your razor blade or pruning shears with isopropyl alcohol between cuts (especially when switching mother plants)
• Wash hands thoroughly; oils and bacteria from skin contact can introduce pathogens to cut stems
• Use fresh, sterile rooting medium (don't reuse Root Riot plugs or rockwool from previous batches)

The cut technique

The mechanics of the cut affect rooting speed and success rate. Five specifics.

• Select branches from the lower portion of the mother plant: lower branches contain higher concentrations of natural rooting hormones (auxins) than upper branches. The "best clones come from bottom branches" forum signal is supported by plant physiology.
• Cut at a 45-degree angle just below a node: the angled cut increases stem surface area for root development. Cut just below a node because the node tissue contains concentrated meristematic cells that initiate roots faster than internodal tissue.
• Target 4 to 6 inch cutting length with 2 to 3 nodes: shorter cuttings (3 to 4 inches) root faster but produce smaller starter plants. Longer cuttings (6 to 8 inches) take longer to root but give the plant a head start in veg. Most growers target 4 to 5 inches.
• Trim large fan leaves by half: reducing leaf surface area reduces transpiration during the rooting period, when the cutting has no roots to replace lost water. Don't remove all leaves; some photosynthesis is needed to power root development. Cut leaves with sharp scissors rather than tearing.
• Place cut stems immediately in pH 5.5-balanced water: the cut surface is vulnerable to air embolism for the first few minutes. Have a glass of pH-balanced water ready and place cut stems immediately until you're ready to dip in Clonex (within 5 minutes).

The Clonex application

Three specifics that growers commonly miss.

• Pour a small amount of Clonex into a shot glass or separate container: never dip cuttings directly into the main Clonex bottle. Contamination from one cutting can affect every future use. Pour what you need for the current batch, then discard the remainder.
• Dip the cutting to 1/2 to 1 inch depth: coat the bottom 1/2 to 1 inch of stem completely. Gel should adhere visibly to the stem surface. Excess gel doesn't hurt but doesn't help either; aim for full coverage of the cut zone.
• Optional: lightly scrape or score the stem above the cut: a light scratch along the lower stem (above the cut, below where the medium will hold it) creates additional root initiation sites. Some growers do this; others skip it. Forum signal suggests it produces marginal improvement on hard-to-clone strains.

The medium insertion

Pre-soak your rooting medium 15 to 30 minutes before inserting cuttings. The medium pH and moisture content matter substantially.

• Pre-soak Root Riot plugs, rockwool cubes, or peat pellets in pH 5.5 water (not 5.8; the slightly more acidic medium accelerates rooting in the first 48 hours)
• Squeeze excess water from the medium so it's moist but not dripping. Forum signal: "you should be able to squeeze water out if you tried, but it shouldn't drip on its own"
• Make a hole in the medium with a paperclip or pencil before insertion (don't crush the stem during insertion)
• Insert the Clonex-dipped cutting to the depth where the lowest node sits at the medium surface
• Gently press the medium around the stem to ensure full contact (no air pockets)

The propagation environment

This is the section that determines your success rate. The environmental targets are non-negotiable.

• Humidity 90 to 100 percent for the first 48 hours: the cutting has no roots and cannot replace transpired water. High humidity prevents wilting. Humidity domes (the clear plastic covers sold for propagation trays) maintain this naturally.
• Humidity gradually reduced to 80 to 85 percent through day 7: after the first 48 hours, begin opening the dome vents slightly to allow air exchange. Full humidity past day 3 promotes stem rot. The gradual reduction encourages roots to develop because the cutting senses water stress and responds by growing roots to access water.
• Temperature 75 to 80 degrees F: use a seedling heat mat under the propagation tray. Cooler temperatures (below 70 F) slow root development substantially. Hotter temperatures (above 85 F) stress the cutting and promote rot.
• Indirect light at 175 to 200 PPFD: use T5 fluorescent fixtures or low-intensity LEDs at 18 to 24 inches above the dome. Avoid direct intense light; cuttings can't photosynthesize at high PPFD without roots to support the process. High light stresses the cutting and reduces rooting success.
• Photoperiod 18/6 or 24/0: either works. Some growers prefer 24/0 for the first 3 days to accelerate metabolism, then transition to 18/6. Others run 18/6 throughout.
• Daily ventilation: open the humidity dome vents for 5 to 10 minutes once or twice daily to allow fresh air exchange. This prevents anaerobic conditions that promote fungal pathogens.
• Light misting only if needed: contrary to common advice, heavy daily misting can cause more harm than good. The humidity dome maintains the humidity; you don't need to mist unless cuttings show visible wilting. If misting, use pH 5.5 plain water.

The hardening-off transition

Once you see white roots emerging from the medium (typically day 7 to 14), begin transitioning the rooted clones to normal veg conditions.

• Days 8 to 10: open dome vents fully during the day, close at night
• Days 11 to 12: remove dome entirely during the day, replace at night
• Days 13 to 14: remove dome entirely; transition lighting to 18/6 at standard veg PPFD (300 to 500)
• Begin first nutrient feeding at 1/4 strength of your veg base nutrients on day 10 to 14
• Transplant to larger pots (1 quart to 1 gallon) on day 14 to 21 once root systems have developed enough to support the plant

The rooting period is the 1 to 2 week window between cut and visible root emergence. The hardening-off period is the 1 week window after visible roots before full veg conditions. Total time from cut to ready-for-veg is typically 14 to 21 days for cannabis.

The Cloning Medium Decision

Four common options. The right choice depends on your scale and propagation infrastructure.

Root Riot plugs (the Hydrodynamics-recommended option)

Root Riot plugs are organic peat-based plugs manufactured by Hydrodynamics (same company as Clonex). Designed specifically for cuttings. Pre-charged with mineral nutrients, pH-stable, retains moisture without becoming waterlogged. Roughly $20 to $30 for a 50-plug tray.

Right pick for hobby growers and first-time cloners. The peat medium forgives moisture mistakes better than rockwool. Roots emerge through the plug walls and are visible without removing the plug from the tray. Plug-and-transplant: once rooted, the entire plug goes into your veg pot without disturbing the roots.

Rockwool cubes

The commercial cannabis cloning standard. Inert mineral wool cubes that hold water predictably and don't introduce organic matter to the cloning environment. Available in 1-inch starter cubes and 1.5-inch propagation cubes. Roughly $20 to $40 for a 50-cube tray depending on size and brand.

Right pick for commercial operations and experienced growers. Requires pre-soaking in pH 5.5 water for 1 to 4 hours before use (rockwool's natural pH is high; the pre-soak adjusts it). More moisture-sensitive than Root Riot; growers must dial in the squeeze technique to get moisture content right. Forum signal: rockwool is the cause of many cloning failures for inexperienced growers because the medium is unforgiving of moisture mistakes.

Peat pellets (Jiffy pellets)

Compressed peat pellets that expand when watered. Roughly $10 to $15 for a 50-pellet tray. Cheaper than Root Riot or rockwool, less consistent performance.

Right pick for budget-conscious hobby growers or beginners experimenting with cloning. The peat composition is variable across brands; some pellets retain too much water and rot cuttings, others dry out too fast. If using peat pellets, soak in pH 5.5 water for 15 minutes before insertion and monitor moisture more carefully than with Root Riot.

Aeroponic cloners

Machines that suspend cuttings in air and mist their stems with nutrient solution every few minutes. EZ-Clone is the canonical brand; 16-site through 120-site models available. Roughly $150 to $600 depending on capacity.

Right pick for serious hobby growers cloning regular batches and commercial propagation operations. Higher upfront cost but faster rooting (often 5 to 8 days versus 7 to 14 days in plugs), higher success rates with proper setup, no medium-related failure modes. Different protocol: dip cuttings in Clonex Gel as usual, insert into machine collars (foam grippers), set timer to mist every 1 to 5 minutes, maintain reservoir at 65 to 70 F. Roots emerge directly into the air-mist environment and look like white masses hanging below the collar.

The honest medium ranking

For first-time cloners: Root Riot plugs. Most forgiving of moisture mistakes, simplest to use, most consistent results.

For serious hobby cloners running regular batches: aeroponic cloner if budget allows ($200 to $400 for a 36-site EZ-Clone), or rockwool if you want to commit to the commercial-standard medium.

For commercial propagation: rockwool or aeroponic at scale, depending on facility infrastructure.

For budget hobby cloners: peat pellets work but require more attention to moisture management.

Clonex vs Athena Cuts (The Premium Alternative)

Athena Cuts is the most direct premium alternative to Clonex in 2026. Liquid rooting compound, not a gel, marketed specifically for commercial cannabis cloning operations. Worth understanding the comparison because Athena Cuts has gained substantial market share over the past 3 years.

What they share

Both are premium cannabis rooting hormones. Both contain IBA as the active hormone. Both are designed for cannabis-specific cloning protocols. Both deliver high success rates with proper environment.

Where Clonex wins

The gel format. Clonex's tenacious gel adheres to the cut stem and maintains contact for 24 to 48 hours. Athena Cuts is a liquid that dips and runs off the stem within minutes. The gel format produces better contact for soft-tissue cannabis cuttings.

The price. Clonex at $2.49 for a 15 mL sachet or $7.99 for 100 mL is dramatically cheaper than Athena Cuts at $40 to $50 per bottle. For hobby growers, the cost gap is significant.

The heritage. 38 years of cannabis cloning trust and the canonical recommendation in essentially every cannabis grow guide written between 2000 and 2026. Forum signal is overwhelmingly Clonex.

Where Athena Cuts wins

Commercial workflow speed. The liquid format dips faster than the gel. For commercial propagation operations cloning 500+ cuttings per session, the seconds saved per cutting compound to meaningful labor time.

Athena ecosystem integration. If you're running Athena Pro Line or Athena Blended Line nutrients, Athena Cuts integrates into the brand workflow. Marketing and packaging match the broader Athena commercial program.

Cleaner workspace. Liquid doesn't accumulate on tools and surfaces the way gel can. Easier cleanup after cloning sessions.

The decision rules

Hobby grower cloning occasional batches: Clonex. The cost gap matters and the gel format is forgiving for beginners.

Serious hobby grower running regular cloning: Clonex remains the right pick unless you specifically prefer liquid format workflow.

Commercial propagation operation: either works. Athena Cuts has slight workflow advantages at high cutting volumes; Clonex has the heritage and lower per-clone cost. Decision often comes down to ecosystem preference (Athena nutrients users may prefer Athena Cuts).

Switching from generic rooting powder: Clonex. The gel format alone is a substantial upgrade over powder.

Cross-reference: our Athena nutrients complete guide covers the full Athena ecosystem including Cuts within the broader Pro Line workflow.

Troubleshooting Common Cloning Failures

The failure modes growers report with Clonex, with the actual cause for each.

"My cuttings are turning brown and smelling bad"

Stem rot from anaerobic conditions. Causes: humidity dome sealed too tight (no daily venting), rockwool or medium too saturated, temperature too high (above 85 F), no fresh air exchange. Fix: open vents for 5 to 10 minutes twice daily, reduce medium moisture (squeeze plugs until they don't drip), maintain temperature in 75 to 80 F range, ensure dome vents are partially open after day 2.

"My cuttings are wilting and yellowing"

Water stress despite high humidity, or light stress from intense lighting. Causes: humidity dropping below 80 percent (dome not sealed adequately during first 48 hours), light too intense (CFL or LED too close), temperature too high. Fix: verify dome seal for first 48 hours, raise lights to 18 to 24 inches above the dome, reduce light intensity, check temperature.

"Roots are taking longer than 2 weeks"

Slow rooting from suboptimal environment, not Clonex failure. Causes: temperature too low (below 75 F), humidity too low after day 3, light too intense (cutting is allocating energy to defending against light stress rather than rooting), strain genetics with naturally slow rooting (some sativa-dominant strains take 14 to 21 days). Fix: add heat mat under tray, verify humidity, reduce light intensity to 175 to 200 PPFD, give difficult strains more patience.

"I'm seeing white fuzz on cuttings"

Fungal pathogens (typically pythium or fusarium) establishing in the warm-humid environment. Causes: contaminated tools at cutting, unsterilized cutting surface, reused rooting plugs, mother plant carrying pathogen. Fix: discard affected cuttings (don't try to save them; you risk infecting healthy cuttings nearby), sterilize tools and workspace, restart cloning batch with fresh medium, consider Hydroguard or similar beneficial bacteria inoculant in pre-soak water for future batches.

"Clonex has changed color in the bottle"

Slight color change over time is normal (the antimicrobial agents and gel matrix darken slightly with age and oxygen exposure). The gel remains effective. Problematic if the gel separates dramatically, develops mold visible at the surface, or smells foul; in those cases, discard and buy a fresh bottle.

"My opened Clonex bottle is drying out"

Storage issue. Clonex needs to be sealed tightly between uses and stored in a cool, dark place. Refrigeration extends shelf life. Drying gel is past its useful life; the IBA concentration becomes unreliable. Buy fresh.

"Success rate dropped after switching to a different rooting medium"

Medium-related failure, not Clonex failure. Most common cause is moving from Root Riot to rockwool without adjusting moisture management (rockwool is less forgiving). Fix: pre-soak rockwool longer in pH 5.5 water, squeeze more aggressively to remove excess water, monitor moisture more carefully than with Root Riot.

Cross-reference: our EC and pH reservoir management pillar covers the foundational reservoir hygiene that affects every operational workflow including cloning.

Product Picks and Pricing

Modern Farms stocks the complete Clonex lineup plus supporting equipment.

The first-time cloner kit ($40 total)

For hobby growers cloning their first batch.

• Clonex Gel 15 mL sachet: $2.49 (treats 30+ cuttings, enough for first batch validation)
• Root Riot 50-plug tray with humidity dome: $25
• Seedling heat mat 10x20: $12
• Total: approximately $40

The committed hobby cloner kit ($85 total)

For growers cloning regular batches.

• Clonex Gel 100 mL: $12
• Root Riot 50-plug tray with humidity dome: $25
• Seedling heat mat with thermostat: $25
• T5 fluorescent propagation light 2-foot: $50 (or low-intensity LED bar at similar price)
• pH 5.5 calibration solution for medium pH validation: $8
• Total: approximately $120 with light, $85 without

The serious hobby cloner kit ($350 total)

For growers cloning regularly and willing to invest in faster results.

• EZ-Clone 36-site aeroponic cloner: $250
• Clonex Gel 250 mL: $25
• Clonex Mist 1 quart: $13
• T5 fluorescent propagation light: $50
• pH meter for reservoir monitoring: $30 (Bluelab pH pen or equivalent)
• Total: approximately $370

The commercial propagation kit (scaled)

For commercial operations cloning weekly batches.

• Clonex Gel 1 gallon: $80 to $120 (annual supply for most commercial cloning operations)
• Clonex Mist Concentrate: $109.99
• Clonex Clone Solution 1 gallon: $40
• Rockwool propagation cubes (commercial bulk pricing)
• Aeroponic cloners or rockwool propagation racks at scale
• Commercial T5 fluorescent or LED propagation lighting

Cross-reference: our Bluelab buyer's guide covers the pH meter selection for any cloning workflow. Our 4x4 grow tent setup guide includes a propagation corner option for hobby growers cloning their own genetics.

The Honest Case For Clonex

The case for is short. There's essentially no case against at $2.49 for a 15 mL sachet.

Buy Clonex if

• You're cloning cannabis at any scale (hobby through commercial)
• You want the canonical industry-standard rooting hormone with 38 years of community validation
• You're willing to invest 30 minutes learning the operational protocol (mother plant prep, cut technique, environment) that determines your success rate
• You're running a serious cannabis operation where consistent rooting matters

Skip Clonex if

• You're committed to Athena Cuts and your operation is integrated with the Athena ecosystem
• You're a hobby grower experimenting with folk-tradition alternatives (honey, aloe vera, willow water) and value the experimentation over consistent results
• You're running an EZ-Clone or similar aeroponic system and prefer liquid rooting hormones for the workflow (Athena Cuts or Dip 'N Grow)

For 95-plus percent of cannabis growers, Clonex is the right pick. The cost-per-clone math is essentially free, the chemistry genuinely works, the brand heritage is unmatched, and the operational protocol in this pillar gives you everything you need to hit 90-plus percent rooting success.

What We'd Tell You at the Counter

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

Buy Clonex. At $2.49 for a 15 mL sachet that treats 30-plus cuttings, the cost-per-clone math makes the decision easy. The chemistry works and 38 years of cannabis cloning history validates it.

The Clonex purchase isn't the part that determines your success. The environment does. Humidity dome maintained at 90-100 percent for the first 48 hours, gradually reduced to 80-85 percent through day 7. Heat mat under the tray maintaining 75 to 80 F. Indirect light at 175 to 200 PPFD with T5 fluorescent or low-intensity LED at 18 to 24 inches above the dome. Daily venting for 5 to 10 minutes to prevent anaerobic conditions. These environmental targets are non-negotiable; nail them and you'll hit 90 percent rooting success.

Don't dip directly into the Clonex bottle. Pour what you need into a shot glass, dip cuttings there, discard the remainder. Contamination from one cutting can affect every future use of the bottle.

Use Root Riot plugs for your first batches. They forgive moisture mistakes better than rockwool. Once you've validated your technique, switch to rockwool or aeroponic cloners for faster results.

Take cuttings from the lower branches of your mother plant. They contain higher natural rooting hormone concentrations and root faster than upper branches. Cut at a 45-degree angle just below a node, trim large fan leaves by half, and place cut stems in pH-balanced water for the 5 minutes before you dip in Clonex.

If you're cloning commercially and the workflow speed of liquid matters, Athena Cuts is a legitimate alternative. For everyone else, Clonex remains the right pick.

The cluster of articles we've written supports this one. Our Athena nutrients pillar covers the Athena ecosystem including Cuts. Our Bluelab buyer's guide covers the pH meter selection. Our 4x4 grow tent setup guide includes propagation infrastructure recommendations. Our EC and pH reservoir management pillar covers the foundational reservoir hygiene that affects every operational workflow.

Modern Farms stocks the complete Clonex lineup from Hydrodynamics: Clonex Rooting Gel in 15 mL sachet through 1-gallon commercial sizes, Clonex Mist ready-to-use and concentrate, Clonex Clone Solution. We also stock the supporting equipment any cloning setup needs: Root Riot plugs, rockwool cubes, humidity domes, seedling heat mats with thermostats, T5 fluorescent and low-intensity LED propagation lights, Bluelab pH pens and meters for medium pH validation. If you're a first-time cloner working through the protocol, an experienced grower troubleshooting failures, or a commercial operation buying Clonex in bulk, we're happy to help in person or by phone. We don't upsell.