Greg from Bellevue, Wa writes
I just applied Crossbow to blackberries in the Spring. However, they are growing fast (in my lawn), and I wanted to cut them down so I can mow my lawn. I have seen that it takes 7-14 days for Crossbow to work on blackberries, but I am specifically wondering if it is still entering through the foliage over this entire time period. In other words, I don't want to cut off the foliage while it is feeding poison to the plant. But at the same time, I need to contain the spread, so that I may now the lawn. I saw a response to a similar question that suggested pruning prior to applying Crossbow. I've already applied Crossbow and would like to know when I can cut without rendering Crossbow ineffective. Thanks!
Yes, Crossbow Herbicide is still being absorbed in the plant throughout that time period. We do normally recommend that you prune the plant before you apply Crossbow. It is recommended that you wait at least 30 days before pruning the plants once Crossbow has been applied. You can still cut the plant down after application.
Answer last updated on: 04/23/2017
