Penstemon Strictus Seeds – Rocky Mountain Beardtongue

Penstemon Strictus, commonly known in the U.S. as the Rocky Mountain Beardtongue, is a striking perennial native to the western United States. It produces tall spikes of vivid blue to violet flowers that attract hummingbirds, bees, and butterflies. Known for its durability and drought tolerance, this plant thrives in poor, well-drained soils and brings a touch of wild beauty to any garden, meadow, or naturalized landscape. Ideal for low-maintenance gardens, rock gardens, or xeriscaping projects.

Features:

• Vibrant Blooms: Produces tall spikes of brilliant blue to purple flowers during late spring to early summer.

• Pollinator Friendly: Attracts hummingbirds, bees, and butterflies.

• Drought Tolerant: Excellent for dry, rocky, or sandy soils with minimal watering needs.

• Low Maintenance: Requires little care once established and resistant to most pests.

• Versatile Planting: Perfect for borders, wildflower meadows, and native plant gardens.

Specifications:

• Common Name: Rocky Mountain Beardtongue

• Scientific Name: Penstemon strictus

• Plant Type: Perennial

• Mature Height: 18–36 inches

• Bloom Time: Late Spring to Early Summer (May–July)

• Sun Exposure: Full Sun

• Soil Type: Well-drained, sandy or rocky soil

• Water Requirement: Low

• USDA Hardiness Zones: 4–8

• Sowing Season:

  • Outdoors: Spring (April–June) or Fall (September–November)

  • Indoors (for transplanting): Start 6–8 weeks before last frost

• Germination Time: 14–28 days

• Temperature for Germination: 65–75°F (18–24°C)

• Spacing: 12–18 inches apart

• Lifespan: Long-lived perennial

• Native Region: Western North America

Planting & Care Tips:

1. Sow seeds on the soil surface and lightly press without covering, as light aids germination.

2. Keep soil moist but not soggy until germination occurs.

3. Transplant seedlings when large enough to handle and after the danger of frost has passed.

4. Water sparingly once established; overwatering may cause root rot.

5. Deadhead spent blooms to encourage continued flowering.