Species Name:  Penstemon digitalis

Common Name: Smooth Penstemon, Tall White Beard Tongue

Zone: 3 to 8  

Light: Full Sun to Partial Shade

Soil Moisture: Medium to Moist

Soil Types: Sand, Loam, Clay

Fertility: Medium

pH: 5.5 – 7.0

Bloom Time: Late Spring, May - June

Habit: A rhizomatous perennial; Forms a basal rosette of leaves; flower stalk emerges
from the rosette covered in white tubular flowers attractive to insects and hummingbirds;
Blooms over a month long period; Tolerant of heavy clay soils and can withstand
extremes of seasonal drought and flooding.

Penstemon digitalis

 Penstemon grandiflorus