register  -   logged in as -  logout   login 

Home Plants
Bulbs Design News Garden


Penstemon cardinalis subsp. regalis

This large genus from (almost entirely western) North America is said by some to rival Primula, Gentiana and Saxifraga as a prime genus for the rock garden. We don't rate it quite that highly, but it includes many splendid plants, with the virtue of flowering later than most inhabitants of the rock garden. They range from low mats and cushions from high mountains to tall plants used in herbaceous border, and include both shrubby and herbaceous species, although most are evergreen. The flowers are 'foxglove' like, usually in spikes or arranged in whorls, technically called verticillasters. Virtually all are from rocky places, and require very well drained, gritty soil, with maximum sunshine. Some need protection from excessive winter wet, but those we list are generally easy plants for outdoor cultivation. The rock garden species are inclined to die back after some years, so it is wise to propagate one or two replacements by taking cuttings or separating pieces of the mat.

Penstemon cardinalis subsp. regalis has flowering spikes lined with bright red, tubular flowers, mostly forming on one side of the stem. This subspecies, which comes from New Mexico, has thicker leaves than the usual form, and also differs in the size of the calyx.

Quantity 2 litre pot
Width 25cm
Height 70cm
Family Plantaginaceae
Flowering Late spring to mid summer
Habitat detail sun or part shade
Garden habitat Continental (dryish summer)
Soil well drained soil
Plant category Alpine
Height range 60 cm - 1.2 m


2 litre pot 8.00
Plants you may also like:
Lewisia nevadensis 'Alba'
Lewisia nevadensis 'Alba' Rosettes of long, narrow, fleshy leaves and starry pure white flowers. 
Lewisia rediviva in the wild
Lewisia rediviva Small, narrow, fleshy leaves and large flowers, white to deep pink. 
Lewisia tweedyi
Lewisia tweedyi Rosette of large, fleshy leaves and flowers of pink, apricot or white. 
Penstemon azureus subsp. azureus NNS05-527
Penstemon azureus Deep purple-blue tubular flowers.