Perennial plants growing in garden? - Knowledgebase Question

Lakewood, OH
Question by tbrutout
May 8, 2006
I just moved into an apartment and have permission to do some planting, but noticed there are LOTS of plants already growing. At first I thought they were weeds, but seems to be pretty specific plantings. The leaves don't match those of hollyhocks. Some of the plants are already 5 foot or better. They are growing on single stalks, that almost look bamboo like. The leaves are shaped like a heart without the curves at the top - somewhat like a family crest might be like. Any ideas as to what these plants may be? Hate to chop them down if they are going to produce magnificent flowers. Thanks!


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Answer from NGA
May 8, 2006

0

Based on your description I think you might be seeing Japanese knotweed (Polygonum cuspidatum) a truly invasive and difficult to control weed. The stalks on this plant are definitely reminiscent of bamboo. Here is a photo and some control information.

http://www.nps.gov/plants/alie...


If it was a flower garden before, you might have inherited Polygonum orientale, Kiss me over the garden gate, and old fashioned but also very aggressive plant -- it is related to the above. Here is a photo and description. You may need to cut and paste the complete url into your browser to make it work correctly.

http://www.anniesannuals.com/s...

If neither of these seem right, you might want to consult with your local county extension and/or experienced professionally trained nurseryman to see if they can identify it for you.

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