Photo by Melody

PlantFiles: Foothill Penstemon
Penstemon heterophyllus 'True Blue'

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Family: Plantaginaceae
Genus: Penstemon (PEN-stem-on) (Info)
Species: heterophyllus (het-er-oh-FIL-us) (Info)
Cultivar: True Blue

8 members have or want this plant for trade.

Category:
Alpines and Rock Gardens
Perennials

Height:
12-18 in. (30-45 cm)

Spacing:
9-12 in. (22-30 cm)

Hardiness:
USDA Zone 6b: to -20.5 C (-5 F)
USDA Zone 7a: to -17.7 C (0 F)
USDA Zone 7b: to -14.9 C (5 F)
USDA Zone 8a: to -12.2 C (10 F)
USDA Zone 8b: to -9.4 C (15 F)
USDA Zone 9a: to -6.6 C (20 F)
USDA Zone 9b: to -3.8 C (25 F)
USDA Zone 10a: to -1.1 C (30 F)
USDA Zone 10b: to 1.7 C (35 F)

Sun Exposure:
Full Sun

Danger:
N/A

Bloom Color:
Medium Blue

Bloom Time:
Mid Summer

Foliage:
Herbaceous

Other details:
This plant is attractive to bees, butterflies and/or birds
Average Water Needs; Water regularly; do not overwater

Soil pH requirements:
Unknown - Tell us

Patent Information:
Unknown - Tell us

Propagation Methods:
By dividing the rootball
From herbaceous stem cuttings
From seed; direct sow outdoors in fall
From seed; winter sow in vented containers, coldframe or unheated greenhouse
From seed; sow indoors before last frost

Seed Collecting:
N/A: plant does not set seed, flowers are sterile, or plants will not come true from seed

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to view:

By dicentra63
Thumbnail #1 of Penstemon heterophyllus by dicentra63

By dicentra63
Thumbnail #2 of Penstemon heterophyllus by dicentra63

By blueberrybabe
Thumbnail #3 of Penstemon heterophyllus by blueberrybabe

By Kim_M
Thumbnail #4 of Penstemon heterophyllus by Kim_M

Profile:

1 positive
No neutrals
No negatives

Gardeners' Notes:

RatingAuthorContent
Positive dicentra63 On Jun 22, 2007, dicentra63 from West Valley City, UT (Zone 6b) wrote:

I grew my specimens from seed, and they thrived for about 4 years before becoming weak and dying after 5 years.

I don't know if it was too cold for them (Zone 6b) or if there was too much freezing and thawing for them.

But while they lasted, they were spectacular. The blue color is electrifying, and the touch of violet at the throat emphasized the blue. I couldn't walk by without noticing how amazing that shade of blue was.

Regional...

This plant has been said to grow in the following regions:

Long Beach, California
Watervliet, Michigan
West Valley City, Utah



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