Which plant is this? I never planted it, and somehow, its seeds took
root in our yard. It's gorgeous!
Actually it isn't. The photographs show a plant with tetramerous flowers
without prominent sepals in a racemose inflorescence, while Asclepias
tuberosa has pentamerous flowers with prominent sepals grouped into
I think that it's Cheiranthus cheiri (wallflower) aka Erysimum cheiri,
but it might be one of the other Erysimums.
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