Replies to This Discussion

Permalink Reply by Zigmund Cieplinski on May 11, 2011 at 9:46pm

Hi Martha, I use it and it does help with alot of the other seeds, which reminds me I have to redo my flower beds again. I have never put in Morning Glories after reading about them in the group on "plants we regretted planting". But it does work, you should see it after you spred it around, and water it in. I use one of those small hand crank spreaders since I have a lot of flower beds. easier to try to stop weed seeds than pulling them. I am in northern Ohio and I put it on in March, from experiance, if I waited later; I pull weeeeeeeeeds!

Also my garden center sells a generic brand, same chemical, same strength, much better on the price. I buy the larger bag, about $18 preen would be closer to $30.

Permalink Reply by Martha on May 11, 2011 at 10:04pm

Thanks...that is great advice about using the crank spreader and getting it on early enough! I am in southern MI. and I had better do it this weekend! I hate weeds! I will look for the cheaper brand for sure!

Permalink Reply by Zigmund Cieplinski on May 11, 2011 at 10:12pm

Glad I could help.

Permalink Reply by Joanne Williams on June 2, 2011 at 10:31am

How does Preen determine what is a flower and what is a weed? I am afraid to use it in my gardens.

Permalink Reply by Zigmund Cieplinski on June 2, 2011 at 11:17am

Preen stops all seeds from sprouting, if you know you have a wanted plant in an area that you want to come back froom seed , just don't preen that area. Also remember that you have to reapply in 90? days to keep up the protection, or the weeds will go nuts, experiance speaking on that one.

Permalink Reply by Joanne Williams on June 2, 2011 at 11:56am

So as long as the plant is already grown and not a seed, it will be okay?

Permalink Reply by Bob (Z9B Florida) on October 13, 2011 at 4:59pm

Very glad to come across this forum.  I've got several large bags of preen that I picked up new at a garage sale for next to nothing but have been afraid to use it as I did not know how and the words on the bag don't answer the obvious questions.  So effective for up to 90 days and okay to get on existing plants, right?  Does that include veggies?   Thanks!

Permalink Reply by Bonnie Hannum ~ Missouri, USA on October 13, 2011 at 5:42pm

http://www.gardenguides.com/100801-use-preen-weed-killer.html

Overview

Preen weed killer is a pre-emergent herbicide that is safe to use around flowers, vegetables, trees and other desirable plants. Once activated by water, this granular weed killer creates a 1- to 2 inch-weed-killing barrier beneath the surface of the soil that prevents weeds from germinating. Preen can be used during any time of the year but, like most pre-emergent herbicides, should not be used over flower seeds as it will stop them from germinating.
Read more: How to Use Preen Weed Killer | Garden Guides http://www.gardenguides.com/100801-use-preen-weed-killer.html#ixzz1...

Permalink Reply by Jessie Rountree on March 6, 2012 at 7:49am

I used it last year on a new berm, and it worked great.

Permalink Reply by Bob (Z9B Florida) on March 6, 2012 at 2:06pm

Just saw this...thanks, Bonnie.