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Thermopsis villosa

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Plant types and subtypes: Perennials

Light Requirements: sun, part-sun

Water Use: medium

Soil Moisture: moist

Soil Description: acid, rich, loam, sand

Height: 3'-5'

Bloom Time: May, June

Bloom Color: yellow

Leaf Color: green, gray-green

Hardiness Zone: 5, 6, 7

Additional Tags: clumping, cottage garden plant

Flower of Thermopsis villosa (Aaron's rod)
  • Flower of Thermopsis villosa (Aaron's rod)
  • Flower of Thermopsis villosa (Aaron's rod)
  • Flower of Thermopsis villosa (Aaron's rod)
  • Flower of Thermopsis villosa (Aaron's rod)

Pricing & Availability

Description

Thermopsis villosa

Also known as:

Aaron's rod

,

Carolina Lupine

,

Carolina bush pea

,

bush pea

,

bushpea

Scientific Synonyms:

Thermopsis caroliniana

Description

A member of the Pea family, Aaron's rod produces spikes of yellow flower clusters that closely resembles those of the Lupine. 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. Some shade is recommended for this species where the summers are hot and dry. Plant in rich, well drained, moist soil. Blooms in May and June. Zones 5-7

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.

Additional Notes

Easy to grow and moderately drought resistant. Aaron's rod should be planted with adequate spacing because its spread will easily reach 3' across, and it does not like to be crowded.

Native Range & Classification

Recorded County Distribution: USDA data

Native Range:
AL, CT, GA, MA, MD, ME, NC, NH, NJ, NY, OR, TN, VA, VT, WV

Classification

Kingdom Plantae Plants
Subkingdom Tracheobionta Vascular plants
Superdivision Spermatophyta Seed plants
Division Magnoliophyta Flowering plants
Class Magnoliopsida Dicotyledons
Subclass Rosidae
Order Fabales
Family Fabaceae Pea family
Genus Thermopsis goldenbanner
Species Thermopsis villosa Aaron's rod