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Sisymbrium loeselii

Sisymbrium loeselii
small tumble-mustard

Common name small tumble-mustard
Family brassicaceae
Life cycle annual
Flowers yellow (summer)
Size 16-48"
Light sun
Cultural notes inhabits disturbed ground

The identification on this weed is somewhat tentative - it's clearly in the mustard clan, and the features seem to fit. The species is native to Europe, but has been spreading across the U.S. It showed up in our garden as an intriguing rosette in early spring, with leaves resembling those of a dandelion, but more crinkled and a more greyish hue. Never a doubt it was a weed, but my curiosity got the better of me as I waited to see what it would grow into. By the time I figured it out, it was growing pretty tall and wide - but just barely blooming, and still time to remove it before it set seed.

Sisymbrium loeselii
Appearance in mid-April

This is a weed in our garden

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