Nursery and Greenhouse - Caution When Using Glyphosate Around Nurseries and Greenhouses

The following is some information on cautions with using glyphosate around nurseries and greenhouses.

We have had cases of severe crop injury where glyphosate has been sprayed and has contacted pots or growing media in or around nurseries and greenhouses. Do not spray weeds in a media pile with glyphosate since it is absorbed on the organic material and can be taken up by the root system of plants grown in that media later on. The same goes for stacks of pots or containers. Glyphosate can be absorbed onto the organic matter adhering to pots or to the plastic itself and this residue can affect plants grown in those pots in the future. If you need to treat media piles or areas around pots for weeds, use Scythe instead since it has no residual impact.

Gordon Johnson, Extension Horticulture Agent, UD, Kent County