Cultivation of each species



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SUBGENUS: PENSTEMON

Section: Penstemon

Subsection: Proceri
CULTIVATION OF EACH SPECIES

Table 27




[subgenus] PENSTEMON

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[section] Ambigui Baccharifolii Chamaeleon Coerulei Cristati Ericopsis Fasciculus Peltanthera Penstemon



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[subsection] Arenarii (2) Deusti (3) Gairdneriani (2) Harbouriani (1) Humiles (19) Multiflori (1) Penstemon (17) Proceri (16) Tubaeflori (1)



[subsection]




GENERAL DESCRIPTION OF PENSTEMONS IN SECTION PENSTEMON SUBSECTION PROCERI
“…easy to distinguish from other penstemons because the flowers are small and clustered in whorls or false whorls, that are widely spaced on the stem. Their leaves are always entire [smooth edges]. Most occur in moist regions or areas with heavy winter snow cover. They may be from a few inches to two feet tall and are found in the northwestern quadrant of the United States into Canada, from the Rockies westward.” 1
Location northwestern quadrant of the United States into Canada from the Rocky Mountains westward
Habitat moist regions or areas with heavy winter snow cover; subalpine or alpine
Foliage herbaceous or subshrub Penstemon attenuatus

Shape

Leaves mats of basal leaves

Plant in bloom easy to flower Penstemon attenuatus

Corolla: (flower)

color blue or blue-purple, occasionally white, cream yellow

size

shape
Inflorescence (arrangement of flowers along flowering stalk; all the flowers on the stalk): open (as opposed to congested)

height few inches to 2’

shape densely clustered or congested (capitate); compact verticillaster of flowers, usually numerous and showy
Calyx: (sepals on underside of flower, collectively; outermost part of the flower)
Cultivation needs Penstemon confertus
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