Blue mustard weed

Blue mustard weed.

Jim Leser

Jim Leser.

There is a simple answer to the question of when a plant is a weed. Any plant growing where you don’t want it can be considered a weed. Yes, that could even include roses, tulips and any desirable plant. And this year could be “the year of the weed” because of the abundant soil moisture we have.

Now a really bad weed is generally one introduced from another country. And plants that are toxic or highly invasive are almost always considered a weed. Kudzu would never be a desirable plant. We classify some weeds as noxious weeds with the worst in category A (such as meadow knapweed) followed by B (Russian-olive) and C (Chicory). Each state can have its own list depending upon their particular problem weeds.

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