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Penstemon laricifolius
Larchleaf beardtongue is a small, tufted perennial from the northern Rocky Mountains that looks like a clump of grass with very narrow leaves. It is grown mainly in dry rock gardens or troughs, and it needs spring moisture to flower.
Penstemon laricifolius, the larchleaf penstemon, is a small herbaceous plant from the northern Rocky Mountain states of Montana, Wyoming, and Colorado. It grows in a form like a small tuft of grass and has very narrow leaves. In southern parts of its range its funnel shaped flowers are more white or pale and in the north they are deeper pink or purple. It is infrequently grown as a cultivated plant dry rock gardens.
Larchleaf pestemon is grown in rock gardens, but often has to be grown in garden troughs to be kept more evenly dry than in ground beds are able to provide. Though it is adapted to very dry conditions it requires moisture in the spring to flower. The seeds of the species show some need for cold moist stratification to break dormancy. Only 10% of seeds sprouted when planted at 21 °C (70 °F) while 56% sprouted after being held at 4 °C (40 °F) for ten to twelve weeks first.
The native range of larchleaf penstemon is from southern Montana through Wyoming to northern Colorado. In Montana it is confined to just Carbon and Big Horn counties, but it grows through much of western Wyoming. In Colorado it grows in just the Laramie River valley in northwestern Larimer County.
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 laricifolius 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.
