Marsh Thistle

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Continuing the countdown of invasive species here on Beaver Island…

Beaver Island Phragmites Control

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Marsh Thistle.

Cirsium Palustre.

European swamp thistle.

Marsh plume thistle.

Many names for yet another invasive plant species.

This one has been described, “like purple loosestrife, with spines.”

Marsh Thistle is a member of the Aster family with origins in Europe.

It is an erect herbaceous biennial that can grow 3 to 5 feet in height. Once again, I go to the informative brochure, Top Ten Invasive Species, put out by the Beaver Island Association  for their excellent description:

[Marsh Thistle]has a rosette (circle) of leaves at the base that are long, spiny, and deeply lobed. The stem is thick, often reddish, and covered with hairy spines and equally spiny, hairy leaves. The pinkish-purple flowers appear at the top of the stem in a tight cluster, usually in June or July. On Beaver Island this plant is more likely to be found in moist areas than in dry sand.

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About cindyricksgers

I am an artist. I live on an island in northern Lake Michigan, USA. I have two grown daughters, four strong, smart and handsome grandsons and one beautiful, intelligent and charming granddaughter. I live with two spoiled dogs. I love walking in the woods around my home, reading, writing and playing in my studio.

2 responses »

    • We’re actually doing very well, Yvonne. Being on a island, ten miles as the crow flies from any shore, we are protected from many invasive species by our distance. We also have plenty of rare, endangered and protected species that still grow in abundance here. However, as more visitors come, with boats and cars from other locations, things move in. Because our yards don’t back up to other yards – like they would in many areas – but to the woods or fields or beaches, we have to be careful, too, of what we bring in as ornamentals. If they have the tendency to want to take over, they have plenty of room to spread. It’s mainly just staying on top of the situation, making people more aware. Thanks for reading, Yvonne, and for your comments!

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