More Information
| Botanical Name |
Penstemon digitalis |
| Seeds Per Pack |
100 |
| Life Cycle |
Perennial |
| Min. Time to Germinate |
18 Days |
| Max. Time to Germinate |
21 Days |
| Depth to Sow Seeds |
Surface Sow; press seeds gently into the soil to make good contact, but do not cover with any additional soil; these seeds require light to germinate |
| When to Sow |
Indoors 6-8 weeks before last spring frost, Outdoors after all danger of spring frost is past |
| Growing Height |
24-36 in. (60-90 cm) |
| Plant Spacing |
18-24 in. (45-60 cm) |
| Hardiness |
USDA Zone 2a: to -45F, USDA Zone 2b: to -40F, USDA Zone 3a: to -35F, USDA Zone 3b: to -30F, USDA Zone 4a: to -25F, USDA Zone 4b: to -20F, USDA Zone 5a: to -15F, USDA Zone 5b: to -10F, USDA Zone 6a: to -5F, USDA Zone 6b: to 0F, USDA Zone 7a: to 5F, USDA Zone 7b: to 10F, USDA Zone 8a: to 15F, USDA Zone 8b: to 20F |
| Sun Exposure |
Full Sun |
| Danger |
All parts of plant are poisonous if ingested |
| Bloom Color |
White/Near White |
| Bloom Time |
Late Spring/Early Summer, Late Summer/Early Fall, Mid-Summer |
| Foliage |
Herbaceous |
| 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), 7.6 to 7.8 (mildly alkaline) |
| Propagation Methods |
From herbaceous stem cuttings, From seed; direct sow outdoors in fall, From seed; sow indoors before last frost, From seed; stratify if sowing indoors, From seed; winter sow in vented containers, coldframe or unheated greenhouse |
| Seed Collecting |
Allow pods to dry on plant; break open to collect seeds |
This is the stunning white-flowered form of this sizeable spreading shrub sporting strong stems carrying long, upward-facing ivory-white flowers, sometimes with white hairs on the floor of the tubular blossom. In the wild, in the USA this plant grows on dry rocky slopes at high elevations.
