How to Clone Cannabis Plants: The Definitive Step-by-Step Guide (2026)
Share
Cloning cannabis plants is one of the most powerful techniques a grower can master. Whether you're running a small home grow or managing a larger cultivation setup, cannabis cloning allows you to replicate your best genetics, maintain consistency, and speed up your harvest cycles.
In this step-by-step guide, you'll learn:
- What cannabis cloning is
- The benefits of cloning vs growing from seed
- The best tools and cloning mediums
- How to take cuttings properly
- How to root cannabis clones successfully
- Common cloning mistakes and how to avoid them
- Advanced tips for faster, stronger root development
If you're serious about producing uniform, high-yielding plants, this guide will help you clone cannabis plants with confidence.
What Is Cannabis Cloning?
Cannabis cloning is the process of taking a cutting (a small branch) from a healthy "mother plant" and rooting it to create a genetically identical copy. Unlike growing from cannabis seeds, cloning ensures:
This is especially useful when you've found a standout phenotype you want to preserve. Because clones are genetic replicas, you eliminate the variability that comes with seeds, making cannabis cloning ideal for consistent harvests.
Why Clone Cannabis Plants Instead of Growing from Seed?
While seeds are excellent for hunting new genetics, cloning offers major advantages for growers focused on efficiency and predictability.
1. Genetic Consistency
Clones are exact copies of the mother plant. If your mother produces dense buds, high potency, or exceptional terpene profiles, your clones will too.
2. Faster Growth Cycle
Clones skip the germination and early seedling stage. Once rooted, they grow quickly because they are already biologically mature.
3. Cost Efficiency
After establishing a strong mother plant, you can produce clones without continually purchasing seeds.
4. Uniform Canopy
Clones grow at similar rates, making them well suited to:
- SCROG (Screen of Green)
- SOG (Sea of Green)
- Commercial grow setups
- LED grow light optimisation
Choosing the Right Mother Plant
The success of cannabis cloning begins with selecting a strong, healthy mother plant.
Look For:
- Vigorous vegetative growth
- Strong stems
- Pest-free leaves
- High resistance to stress
- Desirable aroma and bud structure
Avoid cloning plants that:
- Show nutrient deficiencies
- Have pest infestations
- Are flowering (unless re-vegging intentionally)
- Show signs of stress
Tip: keep your mother plant on an 18/6 light schedule to maintain continuous vegetative growth.
Tools You Need to Clone Cannabis Successfully
Before taking cuttings, gather all required tools. Cleanliness and preparation dramatically increase cloning success rates.
Essential Cannabis Cloning Supplies
- Sterile scissors or scalpel
- Cloning gel (rooting hormone)
- Cloning cubes (Rockwool, peat plugs, or rapid rooters)
- Humidity dome
- Spray bottle
- pH-balanced water (5.8–6.2 for coco/hydro)
- Heat mat (optional but recommended)
- Low-intensity grow light (LED or fluorescent)
Using a quality cloning gel improves root development and reduces the risk of infection.
Best Cloning Mediums: Which Should You Use?
Different growers prefer different cloning mediums — if you're unsure where to start, our guide to choosing a growing medium covers the basics. Here are the most popular options for cloning specifically:
1. Rockwool Cubes
- Excellent moisture retention
- Ideal for hydroponic growers
- Requires pH conditioning before use
2. Rapid Rooters / Peat Plugs
- Beginner-friendly
- Balanced air-to-water ratio
- Easy transplanting
3. Aeroponic Cloners
- Faster root development
- High success rate
- Ideal for advanced growers
For beginners, peat plugs or rapid rooters offer the simplest path to success.
Step-by-Step Guide: How to Clone Cannabis Plants
Now let's break down the exact cloning process.
Step 1: Prepare Your Cloning Area
Sanitise your tools thoroughly. Clean hands and sterile blades prevent contamination.
- Pre-soak your cloning cubes in pH-balanced water
- Set up your humidity dome
- Prepare your rooting hormone
Everything should be ready before cutting the plant.
Step 2: Select the Right Cutting
Choose a lower branch with healthy growth. Ideal cuttings are:
- 4–6 inches long
- At least 2–3 nodes
- Soft but not too thin
- Free of visible damage
Lower branches root faster than thick top stems.
Step 3: Make the Cut Correctly
Cut at a 45-degree angle just below a node. This works better because it:
- Increases surface area
- Improves water uptake
- Encourages faster root formation
Immediately place the cutting into water to prevent air bubbles (embolism) forming in the stem.
Step 4: Trim Excess Leaves
Remove lower leaves and trim large fan leaves in half. This helps:
- Reduce transpiration
- Lower stress
- Direct energy toward root growth
Step 5: Apply Rooting Hormone
Dip the cut end into cloning gel. Rooting hormones contain auxins that stimulate rapid root development and improve cloning success rates. Avoid touching the treated stem. Michigan State University Extension has found that rooting hormones also improve uniformity across a batch of cuttings, not just overall success rate (MSU Extension).
Step 6: Insert into Cloning Medium
Gently place the cutting into your pre-soaked cube. Ensure:
- The stem is firmly supported
- The cube is moist, not soaked
- There are no air gaps around the stem
Place inside the humidity dome immediately.
Step 7: Maintain Proper Cloning Conditions
This is where most growers fail.
Ideal Environment for Rooting Cannabis Clones
- Temperature: 22–26°C
- Humidity: 70–90%
- Light: low intensity (PPFD 100–200)
- No direct strong light
High humidity reduces water loss because clones have no roots yet. Mist lightly once or twice daily if necessary, but avoid over-spraying.
How Long Do Cannabis Clones Take to Root?
Typically:
- 3–5 days: callus formation
- 7–10 days: root emergence
- 10–14 days: strong root system
Aeroponic cloners can produce roots in as little as 5–7 days. Do not tug aggressively to check for roots — wait until you see white roots emerging from the cube.
When to Transplant Cannabis Clones
Transplant once:
- Roots are visible
- Roots are 2–5 cm long
- The clone shows new vegetative growth
Gradually reduce humidity over 2–3 days before transplanting to avoid shock.
Common Cannabis Cloning Mistakes (And How to Avoid Them)
1. Overwatering
Clones need oxygen as much as moisture. Soggy cubes lead to stem rot.
2. Too Much Light
Strong light increases transpiration and stresses clones.
3. Low Humidity
Without roots, clones cannot replace lost moisture.
4. Cutting Flowering Plants
Flowering clones can root, but take longer and may grow oddly at first.
5. Dirty Tools
Contamination kills clones quickly.
Advanced Cannabis Cloning Tips for Higher Success Rates
If you want near 100% success, implement these techniques:
Use a Heat Mat
Maintains consistent root zone temperature.
Foliar Spray (Lightly)
Use a mild kelp solution for added stress resistance.
Keep Airflow Gentle
Prevent mould without drying out clones.
Label Every Clone
Especially important when running multiple strains.
Cloning in Different Growing Mediums
Cloning for Coco Growers
Maintain pH around 5.8–6.0. Lightly feed after roots develop.
Cloning for Soil Growers
Transplant into light seedling soil, not heavy nutrient-rich soil.
Cloning for Hydroponics
Rockwool or aeroponic cloners integrate best. See our guide to the different types of hydroponic systems for more on choosing a setup.
Can You Clone Autoflowering Cannabis?
Autoflowering plants have a fixed life cycle. Cloning them is not recommended because:
- They continue ageing after cutting
- They often flower immediately
- Yields are reduced
For consistent autoflower harvests, grow from seeds instead.
Maintaining a Long-Term Mother Plant
To clone cannabis continuously, maintain a healthy mother plant.
Mother Plant Care Tips
- 18/6 light schedule
- Regular pruning
- Balanced vegetative nutrients
- Pest prevention
- Replace mother every 6–12 months
Healthy mothers mean strong clones.
Benefits of Cannabis Cloning for Commercial Growers
Cloning is essential for:
- Scaling production
- Uniform flowering times
- Maximising canopy efficiency
- Predictable harvest planning
- Brand consistency (terpenes, potency, bag appeal)
Consistency builds trust in competitive markets, and cloning is also the backbone of a perpetual growing setup, where a rolling supply of clones keeps every stage of the grow cycle running at once.
Frequently Asked Questions About Cloning Cannabis
Do clones produce the same potency as the mother plant?
Yes. Clones are genetically identical, so potency and terpene profile remain consistent.
Can I clone without rooting hormone?
Yes, but success rates may decrease without the auxins that rooting gels provide.
Why are my clones wilting?
This is usually caused by low humidity or excessive light before roots have developed.
Can I clone from a clone?
Yes. Clones can become mother plants themselves, as long as they stay healthy and vegetative.
How long before a clone is ready to transplant?
Most clones are ready in 10–14 days once roots are 2–5 cm long and new growth appears, though aeroponic cloners can cut this to 5–7 days.
All seeds are sold for novelty and souvenir purposes only. Skyline Smoke Company supports responsible and legal use and does not condone illegal activity — customers are responsible for complying with the laws of their country. See our Seed Bank Germination Policy.
Final Thoughts: Mastering Cannabis Cloning
Learning how to clone cannabis plants is a game-changing skill for growers who value consistency, efficiency, and genetic preservation. By following this step-by-step cannabis cloning guide, you can preserve elite genetics, increase yield consistency, save money on seeds, speed up your grow cycles, and achieve uniform, professional results.
Cloning cannabis isn't complicated, but it does require precision, cleanliness, and environmental control. Once you dial in your cloning environment, you'll unlock one of the most powerful cultivation techniques available.
Ready to start cloning? Shop cloning gel, humidity domes, and cubes in our Clone Vault collection at the Skyline Grow Shop.
