Planting after RoundUp

“I am having alot of problems with weeds in my garden, so I am considering nuking my garden with RoundUp this fall. Can you offer me some advice about this? Do you know how long after using RoundUp I have to wait before setting in transplants if they are not RoundUp ready transplants? Thanks. ~N.”


Thank you for the email regarding RoundUp.  In general, you can plant 1 to 14 days after applying RoundUp to your soil/weeds depending on what it is that you are planting.  Each crop/plant type is a little different, so it is best to check with the label (PDF version: ).  The important thing to keep in mind is that no matter what you are planting, you want to make sure that the RoundUp has enough time to get to the root of your weed and do its work before you begin disrupting the weeds.

Two things to keep in mind:

  1. If you are using RoundUp on Johnson Grass, Water Hemp, Ragweed, and others in regions that are resistant to RoundUp and other Glyphosate-formulation chemicals, your weeds will not die.
  2. If you are having problems with annual weeds, RoundUp will have no effect on them.  You would only be killing the weeds that grew this year (which are likely dying by now anyway).  The seeds that are in the ground for next year will not be killed by the RoundUp.

Before you do use the RoundUp, I want you to consider something.  The potential harm of Roundup is extensive. Spraying RoundUp can resulting in soil changes that promote root rot and an increase in numerous crop diseases (depending on what type of crop you are growing). The chemical can remain in the soil for up to 140 days, which means that it can be found in the plant, including parts used for food. Those who handle and/or apply the chemical are three times more likely to develop non-Hodgkin’s lymphoma, a type of cancer. They experience more low birth weight babies, infertility, and miscarriages. Roundup is known to cause deformities in amphibians. It causes low sperm count in rabbits and cell death in human embryos.

If you really want to do the right thing for your garden, then put a little effort into it by hand or with a tiller and dig the weeds out.  I realize that this may sound horrible, but look at it this way:  use RoundUp and have the potential for many problems.  Do the work by hand or with tools and have an outcome that will be lasting and provide you with the health benefit of exercise in the process.  It is your choice, but I think the best choice is rather clear: forget the RoundUp!



© Mertie Mae Botanics LLC and Horticulture Talk!, 2010. Unauthorized use and/or duplication of this material without express and written permission from this blog’s author and/or owner is strictly prohibited. Excerpts and links may be used, provided that full and clear credit is given to Mertie Mae Botanics LLC and Horticulture Talk! with appropriate and specific direction to the original content.


4 thoughts on “Planting after RoundUp

  1. Glad to see that we have someone that isn’t all for Monsanto. Most of the websites you look at want you to use as much Roundup and all as possible. Thanks for the great article and for standing up for what you believe in!

  2. Good info, thank you for the different perspective. You know, we have been using roundup for years around our rabbit cages and chicken coop and could never figure out why we didn’t have good breeding. Our males just didn’t seem to be able to ‘get her done’. After reading this post here in summer 2010, we moved our rabbit cages to a grassy area that had never been treated with roundup. In 2011 we seemed to have a little bit better results and 2012 we had great results. In 2013 we have so many rabbits that one could almost go crazy. My kids breed and raise the rabbits to sell at the fair, so it nice to now have it actually work for them instead of running out to buy a couple rabbits each year before the fair checkup and deadlines. Makes me wonder too what I was doing to myself all these years as I applied it if our rabbits were having this much effect. Great blog and have told my gardening and rabbit friends alike about it.

    Hamden, CT

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