How to Clone Plants
You can start your next crop by growing new plants from cuttings you take from your current batch.
Pick a healthy plant that’s been through one growth cycle and then after harvest added at least 6 inches of new growth. Keep the plant well watered, but don’t feed it for three days before you plan to cut it.
Use a sharp utility knife to cut a leaf stem from the middle of the plant. Slice at a 45-degree angle, close to—but not into—the main stem.
Cut the stem to about 4 inches long—again at a 45-degree angle—and trim off leaves that are close to the bottom
Dip the cut end into a rooting hormone and set in a moistened (not soaked) planting cube. Be sure the cut end is in contact with the cube.
Put the cubes in a plastic tray, mist them, and cover the tray with a clear lid. Set them 2 to 3 inches below fluorescent lights. Mist daily.
Leave the lights on for 18 hours a day. As the plants grow taller, raise the lights so they remain about 2 to 3 inches above the plants. In about 10 days, the cuttings will have roots. Remove the lid, but keep the cubes damp.
When you see a root ball forming below the cube, your clones are ready to be deployed.
Remember: Protect your clones from their enemies (diseases and fungus) by sanitizing your blade, cutting surface, and fingers with rubbing alcohol before you start and when you finish—every time!