I guess I haven't read the label either, I sure don't remember reading that about Preen. I haven't completely redone a bed & used Preen before planting. I often add a plant wherever there is an open spot though, & I'm sure there was Preen scattered over it. Must remember this.

The long story of this was I posted on the Robin forum about the question of using Preen with daylilies. Well, it opened a flood gate of responses.
"Preen, Treflan, Snapshot and Surflan are antimitotics.The same process used to kill newly germinating weed seedlings i.e. the preventing of the spindle formation during cell division will occur with all your new hair roots resulting in stunting of the roots. This does not happen or only to a small extent when you use these pre emergents AFTER you plant your daylilies. This is because these products bind to the soil surface forming a barrier to the newly germinating weed seeds which is why you should not hoe or dig or plant after applying these products since you break the weed barrier".

An eye opener for me and thankful to learn something which I had no idea could cause issues if it got mixed into the soil when planting or cannot be used as a weed preventer with certain bulbs.

Julia

I guess that out of dumb luck I have used it after planting, and wouldn't use it when planting bulbs for fear it would prevent their emergence.

Good information though, thanks, Julia.

I didn't know this, either. Thanks for sharing -
Kathy

I think we should all share what we learn. Last thing I want to do is slow down my newly planted daylilies or worse, have my seedlings die off because I wasn't using the product correctly.
You can use this product with some bulbs but not all types of bulbs.

Julia