Penstemon whippleanus
Penstemon whippleanus
Penstemon whippleanus
Penstemon whippleanus
Penstemon whippleanus
Penstemon whippleanus
Penstemon whippleanus
Penstemon whippleanus
Penstemon whippleanus
Penstemon whippleanus
Penstemon whippleanus

Penstemon whippleanus

Whipple's Penstemon

Plantaginaceae

Height

30 - 40 cm

Flower colour

dark purpule

Flowering time

July - August

Foliage colour

dark green

Sunlight

sun

Soil

well drained, gritty

pH

acid - neutral - alkaline

Hardiness

fairly hardy, given right conditions

Plant range

Rocky Mountains

Penstemon is a genus in the family Plantaginaceae.  It is a large genus native to N-America. They are usually low growing herbaceous plants or sub-shrubs with irregularly shaped flowers. They prefer full sun and many are well suited to rock gardens.

Propagation:


Division in spring.


Seed - sown in January.

Seed just covered and stored at 20°C (68°F) until germination. If there is no germination in 3 - 4 weeks, a 2-4 week cooling period can be helpful before returning to 20°C (68°F) until germination.


Or


Seed sown in fall and stored outside until spring, then brought to 20°C (68°F) for germination.

Needs well drained soil and a sunny spot.

You can add comments or ask questions about this plant in the forum

  • Facebook App Icon
  • Instagram Social Icon