Penstemon pinifolius

Penstemon pinifolius, the pine-leaved penstemon or pine-needle beardtongue,[1] is a species of flowering plant in the plantain family Plantaginaceae, native to the southwestern USA.

Penstemon pinifolius
Scientific classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Asterids
Order: Lamiales
Family: Plantaginaceae
Genus: Penstemon
Species:
P. pinifolius
Binomial name
Penstemon pinifolius

Growing to 20 cm (7.9 in) tall and broad, it is a small evergreen shrub with arching stems of narrow needle-like leaves and bright scarlet tubular flowers in summer. The species[2] and the cultivar 'Wisley FLame' [3] have both gained the Royal Horticultural Society's Award of Garden Merit.

Its natural habitats in the rocky uplands of Arizona and New Mexico[4] are a clue to its preferences in cultivation. Though moderately hardy to −10 °C (14 °F) it requires an extremely well-drained, sunny position with some protection from hard frosts in winter.[2]

'Mersea Yellow' is a notable cultivar, with brilliant lemon-yellow flowers.[4]

References
  1. "Penstemon pinifolius". Gardenia.net. Retrieved 30 January 2021.
  2. "Penstemon pinifolius". www.rhs.org. Royal Horticultural Society. Retrieved 24 January 2021.
  3. "Penstemon pinifolius 'Wisley Flame'". RHS. Retrieved 18 January 2021.
  4. "Penstemon pinifolius 'Mersea Yellow'". Missouri Botanical Garden. Retrieved 30 January 2021.
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