Invasive Tansy(Tanacetun vulgare) is taking over Mn

dandy_line (Z3b N Cent Mn)

This nasty invasive yellow flower has over run the North Shore area between Duluth and Grand Marais. Now I see that it is rampant in Crow Wing county, along the County 12 bypass around Crosby-Ironton-Deerwood.

And today I eradicated a patch on highway 210 just east of Pillager. If you see small parcels of it, kill it now before it is too late.

Here is a pic showing what it looks like:



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terrineff

Interestingly when we landscaped prior residence in St. Cloud ~2010 purchased tansy in a local nursery. Business has closed but that's how these issues begin, no?

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dandy_line (Z3b N Cent Mn)

Tansy may not get out of control inside a city limits. But it appears to get ugly real fast out in the country.

Found a patch along the road yesterday that was way too large to be able to dig by hand, so went home and filled the sprayer with ~3% Glyphosate(Roundp). Will have to wait and see if it kills.

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terrineff

It was single plant in landscape bed edged w/ 5" wide poly. Had not spread into lawn by time we sold 4-5 years later. Makes me yearn for those days when maintaining weed-free yard not much work. Also makes me laugh to think of the proposed planting design for this property by landscape architect -- row of 20 yews would in short order been expensive deer salad. I could go on but very obvious, though renowned in this community hasn't worked with undeveloped land.

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