Penstemon grandiflorus

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Penstemon Grandiflorus 6 Penstemon Grandiflorus 5 Penstemon Grandiflorus Penstemon Grandiflorus 4 Penstemon Grandiflora Copy
Penstemon Grandiflorus 6 Penstemon Grandiflorus 5 Penstemon Grandiflorus Penstemon Grandiflorus 4 Penstemon Grandiflora Copy

Penstemon grandiflorus

Common Name: Large-Flowered Beardtongue

Large-Flowered Beardtongue is a striking perennial growing 1 to 3 feet tall, with large, trumpet-shaped lavender to pink flowers appearing in late spring to early summer. It is commonly found in dry prairies and sandy soils, thriving in well-drained conditions. Its bold flowers make it a standout in native plant gardens, attracting bees, butterflies, and hummingbirds. It is ideal for xeriscaping, prairie plantings, and pollinator gardens.

Characteristics

Product Form Plant, Seed
Type Forb
Sun Full Sun, Partial Sun
Soil Sand/Gravel, Calcareous
Moisture Dry, Mesic
Average Max Height (inches) 24
Suggested Plant Spacing (inches) 15
Bloom month(s) May, June, July
Bloom Color or Type Violet
Dominance Low

Range Maps

Sowing Information

For most homeowners, the recommended method is to hand-broadcast seed at a minimum rate of 16–64 PLS (Pure Live Seed) ounces per acre. To ensure even coverage, broadcast the seed in perpendicular passes across the site. Grass seed should be broadcast first and lightly raked into the soil. Afterward, apply a light mulch layer using clean, seed-free straw or, preferably, our native Little Bluestem straw, available at our retail garden centers. Once mulching is complete, broadcast native wildflower seed over the area without raking it in. A good rainfall or thorough watering will provide sufficient soil contact for successful germination.

Planting Information

Dig a hole in your planting site slightly larger than the plant’s root system. When placing the plant into the hole, ensure that the soil line remains consistent with its original level in the pot. Fill in around the roots with the excavated soil, gently firming it to eliminate air pockets. Water the plant thoroughly the same day to promote successful establishment.