Viewing post #316284 by Oldgardenrose

You are viewing a single post made by Oldgardenrose in the thread called Any issue with using Preen?.

Oldgardenrose

Oct 6, 2012 3:15 PM CST

Name: Jerry
Salem, IL

Preen is supposed to be a preemergence herbicide and only works by preventing seeds from germinating. Many iris growers use it religiously so it should not harm peonies. I really need to get some for my iris and peonies.

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