Soil Problems

Contaminated Soil From Weed Killer


Rosemarie Ringenbach added on September 7, 2016 | Answered

Should I dig up the soil? Should I just turn it over for the winter and then replace with new soil in spring? [Lawn care company sprayed on a windy day at apartment building next door and killed 2 Forsythia bushes and all my Mayapple groundcover.]


Share this Question:
Log in or sign up to help answer this question.
Check here if you would like to receive notifications every time this question is answered.
You are subscribed to receive notifications whenever this question is answered.
ANSWERS
Alisma
Certified GKH Gardening Expert
Answered on September 8, 2016

It's unfortunate that the lawn care company damaged your garden. Would it be possible to contact the lawn care company and find out what chemical(s) they used? The reason is that some herbicides (weed killers) break down in just a few weeks, while others can remain in soil for years. Once you know the chemical name, you can look up product information on how long it takes to breaks down. If it turns out to be a persistent one, you will probably need to replace with new soil.

This advice is aimed toward farmers, but should apply to gardeners as well:

http://oregonstate.edu/dept/nursery-weeds/feature_articles/herbicide_carryover/herbicide_carryover.htm

To see if the soil is safe next summer, you could try the "bioassay" technique they suggest.

Was this answer useful?
00
Looking for more?
Here are more questions about Soil Problems

You must be logged into your account to answer a question.

If you don't have an account sign up for an account now.