Description

A member of the Pea family, Aaron's rod produces spikes of yellow flower clusters that closely resemble those of Lupine (hence it is also known as Carolina lupine) or Baptisia. The terminal racemes can reach a height of 5'. Spent flowers will be replaced by hairy pods.

Cultivation

Thermopsis villosa is a beautiful species for use in a cottage garden, or in the back of a perennial flower bed where its height will provide a bright backdrop in late spring to early summer. It is best grown in rich, well drained, moist soil, and in full to part-sun. Over time, plants will form large clumps up to 3' in diameter, so it's best to give them some space. Once established, it is remarkably tolerant of dry conditions thanks to its deep tap roots. This however also makes the plants difficult to transplant. It is recommended to cut the plants back about a month after flowering, to maintain a tidy appearance and encouraging new foliage to emerge that will remain attractive well into fall. Blooms in May and June. Zones 4-8

Propagation

Propagate by division in fall. To propagate from seed, it is recommended they be soaked over night before sowing. Plants started from seed may take 3 years to mature.