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Bluestem beardtongue

Penstemon cyanocaulis

Bluestem beardtongue
Photo: Natural Bridges National Monument, CC BY 2.0

Bluestem beardtongue is a perennial wildflower native to the Colorado Plateau of Utah and Colorado, with blue-green stems growing from a woody base and a deep taproot. It thrives in sunny, well-drained, sandy or rocky ground.

Family
Plantaginaceae (Plantain family)
Grows as
Perennial
Light
Full sun
Water
Water deeply but infrequently, letting the soil dry out between waterings; avoid soggy roots.
Soil
Sandy or gritty, very well-drained soil; rocky or mineral soil is ideal.
Temperature
Tolerates hot, dry summers and cold winters typical of its high-desert range; hardy to about -20 °C.
How easy
Moderate
Native range
Utah to Colorado
Climate
temperate

About

Penstemon cyanocaulis, the bluestem penstemon or bluestem beardtongue, is a perennial plant in the plantain family (Plantaginaceae) found in the Colorado Plateau and Canyonlands region of the southwestern United States.

Where it grows

The range of the species extends from west central Colorado across the border into five counties in eastern Utah. In Utah they are found in the Canyon Lands, on slopes in the La Sal Mountains, and mesas nearby or in Dead Horse Point State Park. In addition they grow at the edge of the desert on the north of Wasatch Plateau and the western side of Tavaputs Plateau. In Colorado it is only found in the western parts of Mesa and Montrose counties and some parts of San Miguel County. The elevation range of the species starts at 1,300 meters (4,300 ft) and reaches 2,700 meters (8,900 ft).

Other Penstemon plants

Firleaf beardtongue · Stemless beardtongue · Sharpleaf penstemon · Los Alamos beardtongue · Alberta beardtongue · White penstemon · White River Beardtongue · Whitemargin beardtongue · Gilia beardtongue · Penstemon angelicus · Siskiyou beardtongue · Broadbeard beardtongue

Text excerpted from the Wikipedia article Penstemon cyanocaulis by its contributors, under CC BY-SA 4.0; the excerpts and the care summary drawn from them are shared under the same licence.

The care summary was written by AI (Claude, Anthropic) from the sources on this page, with general growing knowledge where they are silent. Check before relying on it.

Life form, climate and native range: World Checklist of Vascular Plants, Royal Botanic Gardens, Kew (CC BY 3.0), reformatted; see Plants of the World Online.

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