Large-Flowered Beardtongue

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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

Large-Flowered Beardtongue

Penstemon grandiflorus

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

Sow seed onto a firm, weed-free seedbed. Hand-broadcast seed making two perpendicular passes for even coverage. If planting a mix, broadcast the grass component first and lightly rake/drag it into the top 1/8–1/4" of soil. Next, broadcast wildflower/forb seed and press it into the soil surface (with a roller/cultipacker or the back of a rake) to ensure good seed-to-soil contact. After seeding, apply a very light layer of clean, seed-free straw (or other weed-free, site-appropriate mulch) to reduce erosion and retain moisture without smothering seedlings. A good rainfall or thorough watering will help settle seed and mulch and improve 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.