Q: My parents have a gorgeous snowball bush. Is it possible to root a piece for myself from their bush?

A: I think the best way to propagate woody shrubs is to do something called “air layering”. The process involves wounding a limb and wrapping the wound with sphagnum moss that’s kept moist for eight weeks. It’s pretty simple to do and you can get several rooted starts from the same plant. See my notes at bit.ly/airlayering.