Photo by Melody

PlantFiles: Lanceleaf Thermopsis
Thermopsis lanceolata

Family: Papilionaceae (pa-pil-ee-uh-NAY-see-ee) (Info)
Genus: Thermopsis (ther-MOP-sis) (Info)
Species: lanceolata (lan-see-oh-LAY-tuh) (Info)

Synonym:Thermopsis lupinoides

4 vendors have this plant for sale.

One member has or wants this plant for trade.


12-18 in. (30-45 cm)

9-12 in. (22-30 cm)

USDA Zone 2a: to -45.5 C (-50 F)
USDA Zone 2b: to -42.7 C (-45 F)
USDA Zone 3a: to -39.9 C (-40 F)
USDA Zone 3b: to -37.2 C (-35 F)
USDA Zone 4a: to -34.4 C (-30 F)
USDA Zone 4b: to -31.6 C (-25 F)
USDA Zone 5a: to -28.8 C (-20 F)
USDA Zone 5b: to -26.1 C (-15 F)
USDA Zone 6a: to -23.3 C (-10 F)
USDA Zone 6b: to -20.5 C (-5 F)
USDA Zone 7a: to -17.7 C (0 F)
USDA Zone 7b: to -14.9 C (5 F)

Sun Exposure:
Sun to Partial Shade

Unknown - Tell us

Bloom Color:
Bright Yellow

Bloom Time:
Late Spring/Early Summer


Other details:
Average Water Needs; Water regularly; do not overwater

Soil pH requirements:
Unknown - Tell us

Patent Information:
Unknown - Tell us

Propagation Methods:
Unknown - Tell us

Seed Collecting:
Unknown - Tell us

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By mike_freck
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No positives
2 neutrals
No negatives

Gardeners' Notes:

Neutral fryp On Apr 17, 2012, fryp from Cedar Grove, NM wrote:

I just planted several seedlings, so have no experience yet with this plant. There is a clump in bloom at High Desert Gardens in Santa Fe, NM. It looks a lot like a yellow baptisia. The clump appears to be thriving - about 3' high, loaded with yellow pea-type flowers. With any luck I'll get the same.

Neutral smiln32 On Dec 3, 2004, smiln32 from Oklahoma City, OK (Zone 7a) wrote:

This plant is native to East Asia (from Siberia to Japan). It has been used in the past (the fruit) in the treatment of diseases of the mouth, teeth and throat. It grows well in any moderately fertile well-drained soil in a sunny location.

For best results in seed propagation: Pre-soak the seed for 24 hours in warm water and then sow in early spring in a cold frame. Plants can also be divided in spring.


This plant has been said to grow in the following regions:

Pinckney, Michigan
Edgewood, New Mexico
Walterville, Oregon
Wilkes Barre, Pennsylvania
Memphis, Tennessee
Kalama, Washington

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