Family: Scrophulariaceae (skrof-yoo-larr-ee-AY-see) (Info)
Genus: Penstemon (PEN-stem-on) (Info)
Species: serrulatus (ser-yoo-LAY-tus) (Info)
Synonym:Penstemon diffusus
 One vendor has this plant for sale.
2 members have or want this plant for trade. Category:
Alpines and Rock Gardens
Perennials
Height:
18-24 in. (45-60 cm)
Spacing:
12-15 in. (30-38 cm)
Hardiness:
USDA Zone 5a: to -28.8 °C (-20 °F)
USDA Zone 5b: to -26.1 °C (-15 °F)
USDA Zone 6a: to -23.3 °C (-10 °F)
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)
Sun Exposure:
Full Sun
Sun to Partial Shade
Danger:
Unknown - Tell us
Bloom Color:
Magenta (Pink-Purple)
Purple
Bloom Time:
Mid Summer
Foliage:
Herbaceous
Smooth-Textured
Shiny/Glossy-Textured
Other details:
Average Water Needs; Water regularly; do not overwater
Soil pH requirements:
6.1 to 6.5 (mildly acidic)
6.6 to 7.5 (neutral)
Propagation Methods:
From seed; direct sow outdoors in fall
From seed; winter sow in vented containers, coldframe or unheated greenhouse
From seed; stratify if sowing indoors
Seed Collecting:
Allow seedheads to dry on plants; remove and collect seeds
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