When to use Preen
If this is not the right forum for this question, please forgive me. We put Preen down in a particularly woodsy, weedy area in mid-late Fall. This area has some liriope and some bulbs that we inherited with the house, but it is very treed.
It get extremely weedy, as in waist high, a couple of times a season. In an effort to keep the weeds from germinating, we are trying Preen.
When is the optimal time to put Preen down in the Spring? Will the Preen have any effect on the bulbs?