Grafting is a way to join two similar plants together, and develop a new, younger plant by attaching a twig, or scion, to an older plant, or rootstock. Grafting is an especially good way to save a schefflera that has been damaged accidentally or by insects, because if the graft is successful, the rootstock will eventually take on the characteristics of the scion. Although grafting may seem complicated, it's a fairly simple process requiring patience and a steady hand.
Start with a clean, razor-sharp knife. Dull knives are the main reason for failed grafts, because the blade will tear the plant's delicate tissues.
Locate a schefflera that you can use to cut a scion to graft to the rootstock. The schefflera should be healthy and well-hydrated.
Make an angled cut on a smooth, healthy stem of the rootstock schefflera. The cut should be about 2 inches from the base of the plant.
Remove a stem from the scion that matches the size of the rootstock as closely as possible, or is slightly smaller. Make an angled cut on the lower end of the scion.
Join the angled cuts of the scion and rootstock together so that the cut surfaces match. Press them together gently with a twisting motion to remove any air bubbles, and wrap the joined area with masking tape or electrical tape.
Put the schefflera in a warm, sunny place and water the plant as usual. If the graft is successful, you should see buds in about 3 to 6 weeks, and you can remove the tape.