Penstemon Rocky Mountain Blue Seeds

Penstemon Rocky Mountain Blue Seeds

Penstemon strictus

Item #1111

Perennial in USDA zones 4-9. A long-lived penstemon, Rocky Mountain Blue enhances the garden for twelve months of the year. Its exquisite blue-violet flower spikes bloom for about a month in early summer, followed by satiny brown teardrop seedpods. In winter, the plants' evergreen basal rosettes turn from green to reddish purple. An easy to grow, very hardy and drought tolerant choice for wildflower plantings and formal garden borders.
Deer resistant.

Seedling Image


Sun to part shade

Blooms early summer

2'-3' tall

Days to Emerge:
20 - 35 days

Seed Depth:
1/2 - 1"

Seed Spacing:
A group of
6 seeds
every 9"-12"

When 1" tall,
thin to
one every

When to sow outside: 2 to 4 weeks before average last frost or late fall, or up to 2 months before average first fall frost.

When to start inside: 6 to 8 weeks before average last frost. Cooler soil temperatures are preferred (around 55° F).

Special germination instructions: Stratification is recommended for optimum germination. (See inside of packet for details.)

Artist: Carolyn Crawford

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