Anna from Worcester, Ma 01602 writes,
I have a garden that is infested with bishop's weed. I am removing anything that I want to save.
What is the most effective product that will kill the bane of my gardening existence in an area that is 20 feet by 15. It is also in areas that I have been digging it up. Is there a product that will kill it down to the roots and not harm plants that I would like to save? How can I do this? How many times will I have to do it? PLEASE, I have been fighting this thing and losing. It spreads like wildfire.
Bishops weed is very difficult to get rid of once established. The only way to get rid of Bishops Weed is with a lot of patience and time on your knees weeding it out of your garden. Bishops Weed likes to grow in the top 4 inches of soil, so don't dig too deep when getting it out. You are bound to miss a few rootlets which will start sprouting again. Just dig them out as they show up, and be persistent! Edging can be useful as you weed the garden area, as it will allow you to work smaller areas at a time without worrying about re-infestation from surrounding areas (weeds love that nice fluffy soil) You can try a heavy dose of Round-Up in early fall before the weed goes into its winter dormancy.
Answer last updated on: 05/04/2015