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Golden Bean (Buffalo-bean)

Thermopsis rhombifolia

Family:

Pea Family - Fabaceae

More common south of the Edmonton area, this plant has a reputation for "wandering" in the garden. (Don't eat the beans!)

Xeriscape garden

Xeriscape garden

Naturalization

Naturalization

deer resistant

Deer resistant

poisonous

poisonous

Details

Emerges 

April

Seed collection

Flowers

May, June

yellow flowers

Yellow

August

Height

20

-

45

cm

Lifecycle

Perennial

Width

-

100

cm

Habit

Forbs

Spreading

Spreading

Rhizomatous

Rhizomatous

Ecology

Supports

Supports bees

Bees

Supports butterflies and moths

Butterflies & Moths

Providing

larval host plant

Larval host plant

Provides pollen source

Pollen source

Provides nectar source

Nectar source

Golden Bean is a hardy perennial that welcomes spring with spikes of bright yellow, pea-like flowers rising above deep green leaves.

Habitat

Typically found in

prairie, meadows, slopes / banks

In the Garden

Growing Conditions

Moisture

Dry conditions

Dry

Average conditions

Average

Moist conditions

Moist

Light

Full sun

Full sun

Soil

Average garden soil

Propagation

Via

Rhizomatous

Rhizomatous

Seeds

Seeds

Sowing Recommendations

Scarify seeds

Scarify seeds

Container garden

Soak seeds

High or easy germination

Landscape

Use for:

Aggressive plant

Aggressive plant

Growing Tips

To propagate from seeds, start by surface sowing them in spring, right after the last frost. Plants do not like disturbance, so seedlings should be moved to their final position as soon as possible.

Description

This tough native is an early-season favorite for pollinators, with lightly fragrant, nectar-rich blooms.

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© 2025 Edmonton Native Plant Society

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