Medium wet soil
2-5 feet tall
Blooms June to September
Bloom color yellow
Some consider this plant either native, naturalized, or a non-native
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A member of the Pea Family, this little plant is easy super easy to grow, and in fact will even self-sow its seeds meaning all you have to do is give it the space to do its thing. The leaves fold up at night when the plant goes to sleep. The small yellow flowers are somewhat attractive to pollinators.
In the spring and mid summer this plant will thrive on absolute neglect, and it will become bushy by August and September–just in time for all of the eggs that will be laid on the underside of the leaves. By the end of October all that will remain will be the seed pods and stems–the caterpillars will have eaten all of the leaves.
Literally dozens to hundreds of Sleep Orange butterflies will complete their life cycle on this plant if you allow multiple plants to grow.