Penstemon cardwellii

Also Known As

Carwell's Penstemon

Plant type

perennial

size

H: 2'
W: 2'

planting zones

5a-8b

More Options

Penstemon cardwellii plant details

Penstemon cardwellii is a broadleaf evergreen perennial with green foliage. In spring blue and purple flowers emerge. Attracts hummingbirds. Grows well with sun - mostly shade and regular - low water. Does well in rocky and well-drained soil. A good option if you're seeking something verticillium wilt resistant.

CHARACTERISTICS OF Penstemon cardwellii

Plant type: perennial
Plant family: plantaginaceae
Foliage: evergreen green
Mature size: 2 FT wide, 2 FT tall
Flowers: blue and purple blooms in spring
Uses: repeat-blooming, rock garden

GROWING CONDITIONS for Penstemon cardwellii

USDA Zones: 5a - 8b
Sun exposure: sun - mostly shade
Watering frequency: regular - low
Resistant to: verticillium wilt
Soil needs: rocky and well-drained

Nursery contributed plant descriptions

A heavy set of purple blooms are stunning in the late spring-summer and it will often rebloom in the fall. Evergreen foliage gives this plant year round interest. Large populations exist in Mt. St. Helens blast zone.

By: Kiona Native Plants

A shrubby mat former, with broad evergreen leaves these should be mostly the purple form. One of the best shrubby Penstemons, nice draped over the edge of a trough.

By: Arrowhead Alpines

Native to Wash and OR and found in the Cascades, this is a little dandy. (See - we do grow some natives!) Evergreen little shrublet spreading in a flattened dome with lovely purplish to purplish-blue flowers in spring. It's for the rock garden, not the manure-laden border.