Family: Scrophulariaceae (skrof-yoo-larr-ee-AY-see-ee) (Info)
Genus: Penstemon (PEN-stem-on) (Info)
Cultivar: Stapleford Gem
Additional cultivar information: (aka Sour Grapes)
Hybridized by M. Fish
 2 vendors have this plant for sale.
3 members have or want this plant for trade. Category:
Perennials
Height:
18-24 in. (45-60 cm)
Spacing:
15-18 in. (38-45 cm)
18-24 in. (45-60 cm)
Hardiness:
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:
Sun to Partial Shade
Danger:
Unknown - Tell us
Bloom Color:
Blue-Violet
Purple
White/Near White
Bloom Time:
Mid Summer
Late Summer/Early Fall
Foliage:
Smooth-Textured
Other details:
Average Water Needs; Water regularly; do not overwater
Soil pH requirements:
5.6 to 6.0 (acidic)
6.1 to 6.5 (mildly acidic)
6.6 to 7.5 (neutral)
Patent Information:
Non-patented
Propagation Methods:
By dividing the rootball
From softwood cuttings
From semi-hardwood cuttings
Seed Collecting:
N/A: plant does not set seed, flowers are sterile, or plants will not come true from seed
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