Family: Scrophulariaceae (skrof-yoo-larr-ee-AY-see) (Info)
Genus: Penstemon (PEN-stem-on) (Info)
Species: glaber (glay-ber) (Info)
 One member has or wants this plant for trade.
Category:
Perennials
Height:
12-18 in. (30-45 cm)
18-24 in. (45-60 cm)
24-36 in. (60-90 cm)
Spacing:
15-18 in. (38-45 cm)
18-24 in. (45-60 cm)
Hardiness:
USDA Zone 4a: to -34.4 °C (-30 °F)
USDA Zone 4b: to -31.6 °C (-25 °F)
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)
Sun Exposure:
Full Sun
Sun to Partial Shade
Danger:
Unknown - Tell us
Bloom Color:
Light Blue
Medium Blue
Blue-Violet
Violet/Lavender
Bloom Time:
Mid Spring
Late Spring/Early Summer
Mid Summer
Foliage:
Smooth-Textured
Other details:
This plant is attractive to bees, butterflies and/or birds
Average Water Needs; Water regularly; do not overwater
Soil pH requirements:
6.1 to 6.5 (mildly acidic)
6.6 to 7.5 (neutral)
7.6 to 7.8 (mildly alkaline)
Propagation Methods:
From softwood cuttings
From semi-hardwood cuttings
From seed; direct sow outdoors in fall
From seed; winter sow in vented containers, coldframe or unheated greenhouse
Seed Collecting:
Allow pods to dry on plant; break open to collect seeds
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