Description
Sawsepal Penstemon Seeds grow into Penstemon glaber var. alpinus, a native perennial wildflower with blue-violet tubular blooms and tidy green foliage. It is well suited to full-sun or lightly shaded native beds, rock gardens, pollinator borders, and well-drained dry meadow edges.
Why Grow It
- Penstemon glaber var. alpinus, a native penstemon with blue-violet tubular flowers.
- Useful for pollinator-friendly borders, rock gardens, and well-drained native wildflower beds.
- Includes 25 planting seeds plus practical sowing, spacing, light, bloom, and germination notes.
Growing Information
| Botanical name | Penstemon glaber var. alpinus |
|---|---|
| Life cycle | Perennial native wildflower |
| Mature height | 12-24 in. |
| Light | Full sun to partial shade |
| Bloom or harvest window | Late spring to summer bloom in suitable native wildflower plantings |
| Seed count | 25 seeds |
| Sowing advice | Penstemon seeds often benefit from a cool moist period. Fall sow outdoors, or cold stratify before spring sowing. Surface sow or cover very lightly in well-drained seed-starting mix. |
| Spacing | 12-18 in. apart for native beds, rock gardens, and pollinator borders |
| Germination | Often 14-35 days after a cool moist period; germination can be uneven |
Best For
- native wildflower beds
- pollinator gardens
- rock gardens
- dry meadow edges
- cut flower accents
Packet Details
Includes 25 seeds. Store seeds cool, dry, and dark until sowing. Use the growing table above as a planning reference for your local season.
FAQ
Do Sawsepal Penstemon seeds need cold stratification?
Many penstemon seeds germinate more evenly after a cool moist period. Fall sowing outdoors or refrigerator stratification before spring sowing can help.
What soil does penstemon prefer?
Use well-drained soil and avoid heavy, constantly wet conditions. Penstemons are often happiest in lean native beds, rock gardens, and open borders.
Is it good for pollinators?
Yes. Tubular penstemon flowers are attractive to pollinators in suitable pesticide-free garden conditions.
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