Penstemon: Rocky Mountain (Penstemon strictus)
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$1.00 - $5.60
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Hardy, drought tolerant, and stunningly beautiful, what more could you want? Rich indigo blooms tower high on this Beardtongue, and are loved by hummingbirds and bees. Rocky Mountain Penstemon is one of the easiest Beardtongues to grow, and has a long blooming period of about a month in the Spring. A real show stopper!
Scientific Name: Penstemon strictus
Ease of Growing: Easy
Grown as: Perennial
Maturity (Bloom): Spring
Light: Full Sun
Water: Low
Soil Moisture: Dry
Attracts Beneficial Insects: Yes. Attracts Pollinators, Hummingbirds, Cut Flowers, Deer Resistant.
Containers?: Yes.
Height: 12-36”
Spacing: 15-18”
Sow Depth: On soil surface
USDA Zone: 4a-9b
Produces: rich indigo blooms tower high on this Beardtongue.
Ease of Growing: Easy
Grown as: Perennial
Maturity (Bloom): Spring
Light: Full Sun
Water: Low
Soil Moisture: Dry
Attracts Beneficial Insects: Yes. Attracts Pollinators, Hummingbirds, Cut Flowers, Deer Resistant.
Containers?: Yes.
Height: 12-36”
Spacing: 15-18”
Sow Depth: On soil surface
USDA Zone: 4a-9b
Produces: rich indigo blooms tower high on this Beardtongue.
Penstemons do best on well-drained soils. Most ecotypes do well on infertile, disturbed soils. They have excellent cold winter and drought tolerance. They will tolerate weakly saline to weakly acidic sites. They are usually found in open areas, but will tolerate semi-shaded conditions. They are not tolerant of fire, but are fire resistant due to leaves staying green with relatively high moisture content during the fire season.
Palmer’s penstemon is found in blackbrush, sagebrush, Joshua tree, pinyon-juniper, and ponderosa pine communities where subsurface moisure is available from 800 to 2500 m in elevation.
Palmer’s penstemon is found in blackbrush, sagebrush, Joshua tree, pinyon-juniper, and ponderosa pine communities where subsurface moisure is available from 800 to 2500 m in elevation.
These species should be seeded with a drill or broadcast at a depth of 1/4 inch or less into a firm seedbed. Ideal seeding depth is 1/8 inch. The best seeding results are obtained from seeding in very early spring (because of grass component of mix) on heavy to medium textured soils and in late fall on medium to light textured soils. Late summer (August - mid September) seeding is not recommended. Dormant fall seedings (preferred seeding period for penstemons) will pre-chill seed and reduce seed dormancy, which is very strong in some species. Mulching, irrigation, and weed control all benefit stand establishment. Seedling vigor is good, but not as good as most grasses. Germination may not occur until the second growing season. Flowering should not be expected until at least the second growing season.
Seed is generally harvested by hand stripping or by combine. Seed is mature when capsules are dry and seed is hard and dark in color. Flowering is indeterminate with mature capsules and flowers present at harvest period. Multiple harvest periods (by hand) may be necessary to maximize seed collection. Some seed will shatter once capsules open, but the capsule is upright and tends to hold seed very well. Seed can be separated from the capsule by use of a hammer mill or barley de-bearder followed by air screening.
Cleaned seed should be allowed to dry and then stored in a cool dry area. An after-ripening period of 3 to 4 months is required. Seed retains viability for several years under these conditions.
Native companion plants for the formal prairie garden: Spiderwort (Tradescantia sp.), Evening Primrose (Oenothera macrocarpa), and Butterfly Milkweed (Asclepias tuberosa).
Native companion plants for the pond edge: Gray-headed coneflower (Ratibida pinnata), Kansas Gayfeather (Liatris pycnostachya), Meadow Blazing Star (Liatris ligulistylis), or Rattlesnake Master (Eryngium yuccafolium)
Native Companion plants for rock gardens: Evening Primrose (Oenothera macrocarpa), Shortstem spiderwort (Tradescantia tharpii), Purple Poppy Mallow (Callirhoe involucrata), Narrow-leaf Coneflower (Echinacea angustifolia)
Native companion plants for the pond edge: Gray-headed coneflower (Ratibida pinnata), Kansas Gayfeather (Liatris pycnostachya), Meadow Blazing Star (Liatris ligulistylis), or Rattlesnake Master (Eryngium yuccafolium)
Native Companion plants for rock gardens: Evening Primrose (Oenothera macrocarpa), Shortstem spiderwort (Tradescantia tharpii), Purple Poppy Mallow (Callirhoe involucrata), Narrow-leaf Coneflower (Echinacea angustifolia)
Suggested Varieties
Spiderwort: Prairie (Tradescantia occidentalis)
$1.00 - $5.60
This beautiful wildflower is a wonderful shade of blue and will brighten your days year after year! Often found growing in fields, woods, ditches, this plant is native to a large part of the US. Though sometimes accounted as a weed, it is often cultivated for use in flowerbeds and containers and ,when it is found growing wild, it is usually welcomed and allowed to stay!
Milkweed: Butterfly Weed (Asclepias tuberosa)
$1.00 - $5.60
Butterfly Weed, one of the most striking of native plants, lights up the prairies with its blazing orange flowers. It thrives in rocky or sandy soil, typically in open fields or along roadsides. One of its common names, pleurisy root, refers to an old remedy for lung ailments that contained this plant. At one time, the silk from this plant’s seed pods was spun for fabric or used for stuffing pillows; in World War II, school children gathered the silk to provide a cheap filling for soldiers’ life jackets. Commercial attempts to make use of this abundant plant included the manufacture of paper, fabric, lubricant, fuel, and rubber; eventually these became impractical and were abandoned. Though this plant is toxic to most animals, butterflies are immune to the plant’s poison and actually become rather poisonous themselves as protection from predators.
Blazing Star: Meadow (Liatris ligulistylis)
$1.00 - $5.60
Bursting with brilliant fuchsia stars, this showy perennial wildflower puts on a striking display! Look out for butterflies! Blooming in late summer, Meadow Blazing Star supplies a fine cuisine for the Monarch butterfly. King of the Blazing Stars!