We were visiting Aurora, NY for a conference, on the shores of Cayuga Lake. There was an aggressive vine along the walking paths, twining over itself. There were attractive dark purple flowers. It is invasive, originally from Europe, and although first seen in New York, it is widely recognized in Maryland.
It is a hazard due to crowding out native species. It is a relative of milkweed and may attract Monarch butterflies as does milkweed. The swallow-wort is less supportive to the butterfly or even toxic so a possible additional risk. This was a couple of months ago and still have not seen swallow-wort in our area. Look for the follicle fruit now in late summer and the wind borne seeds.
The purple flowered raspberry prefers shady conditions and is uncommon in Baltimore county. It is also known as Virginia raspberry so is in the general area. It has the unusual large maple-like leaves. The internet gives them a downgrade for taste, but our host in NY raises them and finds them a favorite for cooking. She also mentioned that the canes are smooth, without thorns or prickers but there are small thorns just beneath the berry. It is a native to the eastern United States and has little down side other than limited growth niche.
Two plants from NY but possible sightings locally?
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| The raspberry was seen on the south side of the path to Taughannock Falls. Growers know the site. |
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| Unusual leaves of the purple-flowered raspberry. No thorns on the canes. |
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