how to kill the roots - Knowledgebase Question

Methuen, MA
Question by donnainmethu
July 1, 2007
Rose bush never flowered........huge thorns like knives that are dangerous .....loaded.....had for a5 is down to roots and I cannot seen to get them out.they sprut from a vertical runner and some is under the can I get rid of the roots so I can plant something else

Answer from NGA
July 1, 2007


The cause of suddenly excessive thorn production is rose rosette disease, which is caused by a virus. Unfortunately, there is no cure and the plants will die within a year or two. Infected plants should be destroyed. Cut the plant down to soil level (or make a fresh cut if it is already down to soil level) then paint the fresh cut with full strength vegetation killer (Round-Up or Triox). The herbicide will travel down to the roots of the plant and kill it off. If there are many large roots, and if you can get to them to cut and paint them, by all means do so!

Best wishes with your project!

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