Crossbow soil

Asked March 9, 2015, 7:01 PM EDT

A bunch of Himalayan blackberries were on a chunk of land and were sprayed and chopped down. I'd like to grow some raspberries there to eat and need to know how to clean up the soil.

Lane County Oregon invasive species soil contamination raspberries

1 Response

The two active ingredients in Crossbow are 2,4-D and triclopyr, which have different half-lives in soil. Fact sheets on both of these herbicides are available at the National Pesticide Information Center's website: http://npic.orst.edu/
Depending on when the application was made and if there is concern that residual remains in the soil, you may consider planting a cover crop to build soil fertility while you are waiting for biological breakdown of the herbicides. There is information about building soil quality through cover crops at: http://smallfarms.oregonstate.edu/improving-soil-quality-crops