I planted 4-vitex bushes a couple of weeks ago. They were blooming, and the blooms expired, and fell off leaving what looks like little bulbs where there going to bloom again. I understand you cut the "spikes" off, to keep the plants blooming all summer. What are they talking about, cutting the spikes? Are these little bulbs at the end of the stems the spikes? I no nothing about the plants except the bees love them. I won't to get some more.