Question
Tom,
we have several long rows of blueberries that is being overtaken by crabgrass. Pulling the grass out is no longer working. Is it ok to use a crabgrass preventer around the bushes? Also, is it ok to use sulfur this time of year to adjust the ph? We live a little north of Charlotte, NC

Answer
Hi Jean,
Thanx for your question.  You can put down horticultural cloth or plastic mulch which will prevent weeds from growing.  Here is a website from Washington State University regarding the use of herbicides with blueberries for weed control.

http://whatcom.wsu.edu/ag/comhort/nooksack/ipmweb/blue/weed-management.html

I hope this helps.
Tom