Shoot!! I wish I had read this a month ago. I have a garden full of weeds around new iris plants.
I rely on annual poppies germinating in some areas so I dont Preen in that garden. Is it too late to Preen now? or doesnt it have any effect on established weeds that are blooming and about to set seed for next year? I am talking about the "sour clover " stuff that just grows everywhere.
