Family: Scrophulariaceae (skrof-yoo-larr-ee-AY-see-ee) (Info)
Genus: Penstemon (PEN-stem-on) (Info)
Cultivar: Dark Towers
Additional cultivar information: (PP20013)
Hybridized by Lindgren; Year of Registration or Introduction: 2007
 4 vendors have this plant for sale.
2 members have or want this plant for trade. Category:
Perennials
Height:
18-24 in. (45-60 cm)
24-36 in. (60-90 cm)
Spacing:
15-18 in. (38-45 cm)
Hardiness:
USDA Zone 3a: to -39.9 °C (-40 °F)
USDA Zone 3b: to -37.2 °C (-35 °F)
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)
Sun Exposure:
Full Sun
Sun to Partial Shade
Danger:
N/A
Bloom Color:
Pink
Bloom Time:
Late Spring/Early Summer
Mid Summer
Foliage:
Burgundy
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)
Patent Information:
Patented
Propagation Methods:
By dividing the rootball
From softwood cuttings
Seed Collecting:
N/A: plant does not set seed, flowers are sterile, or plants will not come true from seed
| 
