pre emergent herbicides
-
Douglas Hunt on Apr 04, 2013Debbie, pre-emergent herbicides should be applied in early spring, before weeds start germinating. When the forsythias bloom is generally a good indicator. There is no impact on transplanting, as pre-emergents work solely by suppressing germination. This article from Colorado State addresses the use of pre-emergents in lawns, but the principals are the same for the flower garden: http://www.ext.colostate.edu/pubs/garden/03101.html And here are some specific pointers on Russian knapweed: http://www.ext.colostate.edu/pubs/natres/03111.htmlHelpful Reply
-
-
Debbie Polson on Apr 05, 2013Thanks so much for the link...I have tried many things for the knapweed and nothing seems to work well. How soon after applying a preemergent in a garden site could seeds then be planted? How long is the herbicide active?Helpful Reply
-
Related Discussions
Getting rid of burdock-Anyone know a non toxic way to get rid of them?
i am clearing an area to plant a butterfly/bee wild flower garden. The area is full of burdock and the soil is hard packed clay. I have been digging the burdock out... See more
The shelf life of Chalk paint?
I have a jar of Ann Sloan chalk paint I bought several years ago. It has never been opened but it has separated. As it was very expensive and I have a project in mi... See more
How to remove Behr Deckover?
We used Bher Deck over about 5 years ago. It is peeling and fading in places. We have tried to remove it. It is almost impossible. HELP!
Should I paint or stain my oak kitchen cabinets?
I was wondering if you could help me with something -- I have an entirely oak kitchen. I know it's the rage now to paint or gel stain cabinets. I've been considering ... See more
Help please! What color for the front door?
We're remodeling this 1930's house. We have a new red metal roof & plan to keep the white siding. What would you suggest as a front door color? I love bright, bold co... See more
Curb side find! What would you do?
I found this in the curb this morning on my way to work. Needless to say I'm late :) does anyone know anything about this piece? What would you do with it? Paint? Res... See more