PREEN in Perennial Bed

starjrJuly 27, 2009

Can we put preeen - the garden type - in the centers of the bunches of flowers to stop the future weeds coming up within them??? The beds are all in river rock and the whole bed has landscape fabric over top of it then the rocks....

Thank you for reporting this comment. Undo

Is it too late to lose the rock and start over with an organic mulch?

The only thing that fabric does is help keep the rocks from working into the soil. You're going to get more weeds in your rocks from weed seeds blowing in and germinating on TOP of the landscape fabric than you will from them coming up from underneath. And you'll tear up your hands pulling them, compared to hoeing them up or lifting them with a trowel as you can when it's a bark or leaf mulch.

I've cursed the previous owners of our house (or, more accurately, the team that the builders hired) as I've shredded my hands trying to get dandelions out of sharp-cornered flint pebble mulch. All the beds I've put in have been topped with compost and bark mulch, and I'm gradually removing the rock and fabric from the existing beds.

Sorry; I spent Sunday dealing with those damned rocks and Monday bandaging my hands.

To answer your question, I would think that adding Preen in the crown area of your plants would burn the foliage badly. Plus, it would take out any new perennial seedlings, which you might want to keep in your garden. And Preen won't take care of the weeds popping up on top of the river rock.

    Bookmark   July 28, 2009 at 8:50AM
Thank you for reporting this comment. Undo

ok thanks and now I am scared---yep too late to get rid of the 6 tons.....but we shall see

    Bookmark   July 28, 2009 at 9:09AM
Thank you for reporting this comment. Undo

I have a rock bed that I has only thyme growing in it and plan to put in another. Before I put the river rocks in I laid down newspaper and pages from old telephone books to help control the weeds. I also use needle nose pliers to pull out whatever weeds that pop up.

    Bookmark   July 28, 2009 at 6:36PM
Thank you for reporting this comment. Undo
lindac(Iowa Z 5/4)

I too have torn out that nasty fabric and hauled out rock....
If you don't have a problem aware you will!
I sometimes use preen, but I don't put it on the plants....but sprinkle it like pepper on the soil where I don't want seeds to grow. And I have stunted and killed plants by sprinkling Preen before I put in the plants....and gotten the Preen on the roots.
Linda c

    Bookmark   July 29, 2009 at 12:24AM
Thank you for reporting this comment. Undo
mayhem69(zone 6 SE PA)

I have stuff double the strength of regular Preen. I killed half the foliage of my boxwood too. I wasn't too careful the first time i applied, but next time i will take care, and not spread on a windy day.

    Bookmark   July 29, 2009 at 9:50AM
Sign Up to comment
More Discussions
Echinaceas in my Rain Garden
In a rare stroke of luck I just finished my rain garden...
Are Agapanthus hardy in zone 6
Does anyone have experience growing agapanthus in zone...
Would you be willing to share your favorite plant markers?
I've been eyeing the copper and zinc ones but just...
Border Patrol Plants
Border Patrol Plants: those small, front-of-the-border...
christinmk z5b eastern WA
People viewed this after searching for:
© 2015 Houzz Inc. Houzz® The new way to design your home™