Large Flowered Beardtongue
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Penstemon grandiflorus
Commonly known as Large-flowered Beardtongue, Large-flower Penstemon, Large Beardtongue, Large Penstemon
Penstemon grandiflorus is a herbaceous perennial native to sand prairies, tallgrass prairies, loess hills, and other open, grassy habitats. Mature plants typically grow 2-4' tall and are noted for their upright growth habit, large, tubular, blue-lavender flowers, and silvery foliage. Flowers (to 2” long) bloom in upright, open racemes in late spring. Foliage consists of thick, toothless, opposite, clasping, blue-green leaves, with the basal leaves obovate and the stem leaves rounded to elliptic.
Best grown in gritty, dry to medium, well-drained soils in full sun. Avoid moist, poorly-drained clay soils. Do not overwater. Full sun may help avoid onset of root rot. Plants may be cut back to basal foliage after bloom to improve appearance of the planting. May be grown from seed. Plants will self-seed in optimum growing conditions.
Height: 2'-4'
Spread: 1'-1.5'
Bloom: May-June
Light: Full Sun, Part Shade
Water: Low, Medium
Zone: 3, 4, 5, 6, 7, 8, 9
Origin: Texas, central United States
Spring Shipping:
Orders are shipped within 7-10 business days. We will email you if there are expected delays.
When you order plants from our nursery, you can expect them to arrive in the best possible condition. Our team carefully packs each order using sturdy, biodegradable packaging materials.
Your plants' appearance may vary depending on the season and their current growth stage. We may cut back the leafy growth of some plants to prepare them for shipment and transplanting.
5 Gallon and Up: Any plant purchased to ship over 5 Gallons will be shipped bare root. This means we will remove the plant from its original pot, remove the soil surrounding the roots, and wrap the roots with a biodegradable plastic bag. This reduces weight and the likelihood of damage during shipping.
Once your plants arrive, it is essential to plant them as soon as possible. This will help them rebound and thrive. If you cannot plant immediately, water regularly and keep the roots off heat-conducting surfaces.
Newly transplanted plants often require more water until their roots are well established. Plan to water them 1-3 times weekly for the first few months.
