PENSTEMON grandiflorus (Shell-Leaf Penstemon)

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ENSTEMON grandiflorus (Shell-Leaf Penstemon) is a perennial flowering plant native to eastern North America. It belongs to the genus Penstemon in the family Plantaginaceae.  Habitat: Shell-Leaf Penstemon is native to a variety of habitats, including open woodlands, meadows, prairies, and rocky slopes. It can be found in regions of eastern...
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ENSTEMON grandiflorus (Shell-Leaf Penstemon) is a perennial flowering plant native to eastern North America. It belongs to the genus Penstemon in the family Plantaginaceae. 

Habitat: Shell-Leaf Penstemon is native to a variety of habitats, including open woodlands, meadows, prairies, and rocky slopes. It can be found in regions of eastern North America, ranging from the Great Lakes area to the southeastern United States.

Shell-Leaf Penstemon is a medium-sized plant that typically grows to a height of 1 to 3 feet (30 to 90 centimeters). It has sturdy stems and lance-shaped leaves that are glossy and deep green in color. The leaves have a shell-like texture, which gives the plant its common name.

The plant produces large and showy tubular flowers that are usually deep pink to purplish-red in color. The flowers have two lips, with the lower lip often having contrasting markings or veins. They are arranged in loose clusters or spikes at the top of the stems. Blooming typically occurs in late spring to early summer. The tubular flowers of Shell-Leaf Penstemon attract a variety of pollinators, including bees, butterflies, and hummingbirds. They provide a source of nectar for these pollinators and support their populations.

This species is adaptable to different soil types, including loam, sandy, and rocky soils. It prefers well-drained soil conditions. Shell-Leaf Penstemon can tolerate both sun and partial shade, but it generally blooms more abundantly in full sun.

Shell-Leaf Penstemon is a popular choice for native plant gardens, wildflower meadows, and cottage-style landscapes. It adds vibrant color and attracts beneficial insects. It can be grown from seeds or purchased as nursery-grown plants.


Number of Seeds Max Coverage Area (Square Ft.)
0.5OZ 16,250 500
1OZ 32,500 1,000
1/4LB 130,000 4,000
1/2LB 260,000 8,000
1LB 520,000 16,000
5LB 2,600,000 80,000

Scientific Name: Penstemon Grandiflorus

Common Name: Shall-Leaf Penstemon

Plant Type: Perennial 

Family: Plantaginaceae

Native Range: North Dakota to Wyoming, Texas and Illinois 

Height: 24-36"

Spread: 12-18"

Habitat: Dry Prairies, Edges of sandy woods 

Zone: 3-9

Exposure: Full sun

Blooming Season: May to June

Attracts: Birds, Hummingbirds

Resistant: Deer 

Characteristics: Showy 

Flower Shape: Trumpet 

Flower Color: Lavender blue 

Water Requirement: Dry to medium 

Soil Type: Well-Drained   

Soil pH: Acid, Alkaline, Neutral

Advantage: Low maintenance   

Uses: Decoction of roots for chest pain and stomach aches, Decoction of leaves for fever

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