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Propagation, Cloning & Seedling Guides

The margin for error on a tiny cutting or seedling is much smaller than on an established plant, which is why propagation is where most early failures actually happen. These guides cover cloning from a mother plant, germinating from seed, and comparing propagation methods so your plants get a strong enough start to carry through the rest of the grow.

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Why Are My Seedlings Stretching? Leggy Growth and Light Height
Quick Answer: Why Are My Seedlings Stretching? Stretching usually means light is too weak, too far away, or unevenly distributed across the tray, causing the seedling to grow upward searching for stronger light. Leggy seedlings show a long, thin stem with unusually large gaps between leaf sets, rather than compact growth. Seedlings need less light intensity than mature plants, but still need enough for compact growth, not the bare minimum to survive. Excess heat and insufficient light duration can both worsen stretching alongside inadequate intensity. Stem that has already stretched... Read more...
Aeroponic Cloning Machine vs Passive Propagation: What Actually Makes One Faster
Aeroponic Cloning Machine vs Passive Propagation: What Actually Makes One Faster
Quick Answer: Aeroponic Cloning Machine vs Passive Propagation Passive cloning (rockwool or coco under a humidity dome) roots in 7 to 14 days. Aeroponic cloning roots in 5 to 7... Read more...
Clone Without a Heat Mat: T5 Propagation Setup for Australian Growers
Quick Answer: Cloning Without a Heat Mat Using T5 Lighting A T5 fluorescent tube inside a small propagation tent raises ambient temperature sufficiently to replace a heat mat entirely. Target root zone temperature of 22 to 26°C -- the T5 inside a sealed dome achieves this without direct bottom heat. Maintain humidity above 85% inside the dome for the first 5 to 7 days -- cuttings have no roots and transpire through leaves. Use Clonex rooting gel on the cut end immediately after taking the cutting -- exposure to air... Read more...
How to Clone Plants in Hydroponics: A Complete Guide to Propagation for Australian Growers
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... Read more...
How to Germinate Seeds for Hydroponics: Seedling Guide for Australian Growers
Quick Answer: How to Germinate Seeds for Hydroponics Australia Pre-soak Grodan rockwool cubes in pH 5.5 water before use. Target germination temperature: 22 to 26°C. Below 18°C germination slows significantly or fails entirely. Do not add nutrients until the first true leaves appear. Seeds carry their own stored energy for the first stage. Keep propagation medium consistently moist but never waterlogged. Overwatering can create a higher risk of bacterial infection and failed germination. Maintain 80% to 90% humidity and ensure adequate airflow. Still humid air with no circulation encourages stem... Read more...