A long-lived, heirloom penstemon native to the Western United States, Rocky Mountain Blue enhances the garden all year. Its exquisite blue-violet flower spikes attract pollinators and 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 both wildflower plantings and formal garden borders. A perennial in USDA zones 4-9. Plants grow up to 24″-36″ tall and produce flowers that bloom in the early summer. Prefers full to partial sun exposure. Botanical Interests® Rocky Mountain Blue Penstemon Seeds have been verified by The Non-GMO Project.
Outdoors: Sow 6-8 weeks before your average last frost date or late fall.
Indoors: Sow 6-8 weeks before your average last frost date. Germinates best in cooler soils (near 55°F).
What is an heirloom seed?
An heirloom variety is one that has been passed down from generation to generation. Generally, the variety must have been around for at least 50 years. They are open-pollinated, which means they have been exposed to natural pollination methods like insects or winds. They aren’t hybrids or genetically modified.