Re: RE: OT New Iris bed

Hi Char,

On Jul 19, 2005, at 9:24 AM, Char Holte wrote:


Hi,
I think it lasts long enough to cause a problem
with new plantings.

Actually it doesn't. It effectively becomes inactive when it hits the soil. When it gets sprayed on the leaf of a plant it is transported from the leaf to the root system where it inhibits the creation of an enzyme the plant needs to grow.

While Roundup does leave a salt residue in the soil, unless you are applying massive amounts, your rhizomes should not be affected in any way.

However you do have a different problem. Even if you do spray down you weeds with roundup (which I do all the time), when you plant the rhizomes, you will disturb the soil bringing a new set of weed seeds to the surface that will sprout.

Preen is another alternative.


John | "There be dragons here"
| Annotation used by ancient cartographers
| to indicate the edge of the known world.

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