How To Kill Perenial Sunflower - Knowledgebase Question

Detriot, MI
Avatar for booths27
Question by booths27
April 27, 2000
I have sunflowers in my flower bed that I can't get rid of. When I moved here they were already planted. I have dug all the roots out but they still manage to come back. Since I did'nt plant them I'm not exactly sure what type it is but I believe it's called Jerusalem artichoke. They grow to be between 8ft to 12ft in height with a small yellow flower that blooms in late summer an a large,long,thick root.I have tried the past three summers to get rid of it with out any luck so I'm open to any suggestions.

Answer from NGA
April 27, 2000
Your description sounds like Jerusalem artichoke, Helianthus tuberosus. They spread readily from the underground tubers and can become a pest once established. The best way to get rid of it is to keep digging out every bit of tuber/root as soon as you see any greenery above ground, as it can spread from small bits.

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