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perennial

False Lupine

Thermopsis montana

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False Lupine (Thermopsis montana) at Plumline Nursery

False Lupine in bloom

False Lupine in bloom

(Photo courtesy of NetPS Plant Finder)

False Lupine (Thermopsis montana) at Plumline Nursery

False Lupine flowers

False Lupine flowers

(Photo courtesy of NetPS Plant Finder)

Plant Height:  18 inches

Flower Height:  24 inches

Spacing:  15 inches

Sunlight:  full sun  partial shade 

Hardiness Zone:  3a

Other Names:  Mountain Thermopsis

Ornamental Features

False Lupine has masses of beautiful spikes of lemon yellow pea-like flowers rising above the foliage in late spring, which are most effective when planted in groupings. The flowers are excellent for cutting. Its oval compound leaves remain green in color throughout the season. The fruit is not ornamentally significant.

Landscape Attributes

False Lupine is an herbaceous perennial with an upright spreading habit of growth. Its medium texture blends into the garden, but can always be balanced by a couple of finer or coarser plants for an effective composition.

This is a relatively low maintenance plant, and should only be pruned after flowering to avoid removing any of the current season's flowers. It has no significant negative characteristics.

False Lupine is recommended for the following landscape applications;

  • Mass Planting
  • General Garden Use

Planting & Growing

False Lupine will grow to be about 18 inches tall at maturity extending to 24 inches tall with the flowers, with a spread of 18 inches. When grown in masses or used as a bedding plant, individual plants should be spaced approximately 15 inches apart. It grows at a medium rate, and under ideal conditions can be expected to live for approximately 10 years. As this plant tends to go dormant in summer, it is best interplanted with late-season bloomers to hide the dying foliage.

This plant does best in full sun to partial shade. It is very adaptable to both dry and moist growing conditions, but will not tolerate any standing water. It is particular about its soil conditions, with a strong preference for sandy, alkaline soils. It is somewhat tolerant of urban pollution. This species is native to parts of North America.

 
 
Hardiness Zone Plant Height Minimum Sunlight Soil pH Preference
Characteristics
Massing  Garden 
Applications
Flowers 
Ornamental Features

Contact Us

Plumline Nursery
4151 Logan Ferry Road
Murrysville, PA 15668
724-327-6775

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Hours

FALL HOURS:
Monday: 8am-4:30pm
Tuesday: 8am-4:30pm
Wednesday: 8am-4:30pm
Thursday: 8am-4:30pm
Friday: 8am-4:30pm
Saturday: Closed
Sunday: Closed

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