Quick Answer: How to Clone Plants for Hydroponics Australia
- Take cuttings from healthy mother plants in active vegetative growth. Avoid stressed or flowering plants.
- Cut at 45 degrees just below a node, remove lower leaves, and dip immediately in Clonex rooting gel before air exposure.
- Aeroponic cloners produce roots in 5 to 7 days. Passive rockwool or coco block methods take 7 to 14 days.
- Maintain 85 to 95% humidity under a dome for the first 5 days. Cuttings transpire through leaves with no root water supply.
- Sterilise all cutting tools between plants. One infected cutting contaminates every subsequent clone taken with the same blade.
- Transplant once roots are visible through the base of the propagation cube. Feed at low EC (0.8 to 1.2) for the first week.
Cloning is one of the most effective ways to replicate your best performing plants. Done correctly, you get genetically identical copies with predictable growth, faster development than seed, and zero germination risk. This guide covers everything you need to clone plants successfully in a hydroponic system. If you're starting from seed instead of a cutting, our seed germination guide covers the same process for that path. For a simpler, lower-cost setup that skips the heat mat and aeroponic equipment entirely, see our T5 propagation setup guide. And if you're still deciding between an aeroponic machine and a passive dome setup, our aeroponic vs passive cloning comparison covers the real mechanism behind why one roots faster.
What plant cloning is
Cloning is the process of taking a cutting from a healthy mother plant and encouraging it to develop its own root system. The clone inherits all the genetic traits of the mother, including growth rate, yield potential, and resistance characteristics. The key benefits of cloning over seed are consistent genetics across every plant, faster time to harvest compared to seed germination, no risk of male plants in flowering species, and lower ongoing cost once a mother plant is established.
What you need to clone plants
A successful clone requires three things: a clean cut, a rooting medium, and the right environment. You need a sharp sterile cutting tool such as the Propagation Knife Snap-Off Sterile Razor Blade, a rooting hormone gel such as Clonex Rooting Hormone Gel to seal the cut and stimulate root development, a propagation medium such as Grodan 40mm Rockwool Cubes or Jiffy Coco Grow Blocks, a humidity dome such as the JB's Propagation Lid to maintain moisture around the cutting, and a propagation light such as the SANlight FLEX II LED Propagation Bars or Propagation Fluorescent Lights.
Step by step cloning process
- Select a healthy mother plant that has been in vegetative growth for at least four weeks.
- Identify a shoot with at least two nodes and cut at a 45 degree angle using a sterile blade.
- Immediately dip the cut end into Clonex Rooting Gel and coat thoroughly.
- Insert the cutting into a pre-soaked rockwool cube or coco block.
- Place under a humidity dome and keep humidity above 80 percent.
- Provide 18 hours of low intensity light per day using a propagation light.
- Roots typically appear within seven to fourteen days depending on species and environment.
Aeroponic cloning for faster results
Aeroponic cloners mist the stem of the cutting directly with water and nutrients, producing roots significantly faster than passive methods. The X-Stream Aeroponic Propagator is one of the most reliable options available in Australia, producing visible roots in as little as five to seven days. Aeroponic cloning works best when water temperature is kept between 18 and 22 degrees Celsius, the reservoir is sterilised between cycles using Guardian Total Cleanse, and cuttings are taken in the morning when plants are fully hydrated.
Rooting additives that improve success rates
A rooting stimulant added to your propagation water significantly increases root mass and reduces the time to transplant. T.A. Root Booster supports natural root development and germination. Clonex Clone Solution is a complete propagation nutrient and rooting formula. GT Rootzone accelerates root establishment in rockwool and coco. Nefarious Rhizo Tonic drives explosive root growth in aeroponic and recirculating systems.
Common cloning mistakes
Taking cuttings from stressed or flowering plants reduces success rates significantly. Not sterilising cutting tools between plants spreads disease through your propagation area. Overwatering rockwool cubes causes stem rot before roots develop. Insufficient humidity causes cuttings to wilt before roots establish.
Transplanting your clones
Once roots are visible through the base of the rockwool cube or coco block, the clone is ready to transplant. Move into your chosen hydroponic system and begin feeding at a low EC of 0.8 to 1.2 to avoid nutrient shock. For the full range of propagation equipment available in Australia, browse the Propagation Supplies and Lighting collection.
Putting Together Your Cloning Kit
The minimum kit is a clean cutting blade, Clonex Rooting Gel, and either Grodan 40mm cubes or Jiffy coco blocks under a dome like the JB's Propagation Lid. That's a complete, working setup for under $50.
If you're propagating regularly enough that speed matters, add the X-Stream Aeroponic Propagator instead of the dome setup, and a root booster in your propagation water meaningfully improves strike rate regardless of which method you choose.