A: Some bulbs have the ability to move themselves down in the soil, using contractile roots, but I don’t know of any that can move upward. Too much soil on top of plant roots will suffocate them. You might get by if you add a soil mix that is very sandy and breathable. But frankly, removing the plants after they bloom, adding soil, and replanting would be your best route to raise the soil level.
Q: Where can I get Meyer zoysia seed? I already have Meyer sod in my backyard, but want to overseed it in the rest of my yard because it spreads over the Bermuda and weeds. M. Henry, email