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Slender Blue Beard Tongue
Penstemon procerus

Family: Plantaginaceae
Genus: Penstemon (PEN-stem-on) (Info)
Species: procerus (PRO-ker-us) (Info)

Category:

Alpines and Rock Gardens

Perennials

Height:

under 6 in. (15 cm)

6-12 in. (15-30 cm)

Spacing:

12-15 in. (30-38 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

Danger:

Unknown - Tell us

Bloom Color:

Blue-Violet

Bloom Time:

Late Spring/Early Summer

Mid Summer

Foliage:

Evergreen

Smooth-Textured

Shiny/Glossy-Textured

Other details:

This plant is attractive to bees, butterflies and/or birds

Drought-tolerant; suitable for xeriscaping

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:

Non-patented

Propagation Methods:

From herbaceous stem cuttings

From seed; direct sow outdoors in fall

From seed; winter sow in vented containers, coldframe or unheated greenhouse

From seed; stratify if sowing indoors

Seed Collecting:

Allow pods to dry on plant; break open to collect seeds

Regional

This plant has been said to grow in the following regions:

Wasilla, Alaska

Richmond, California

Parker, Colorado

Gardeners' Notes:

2
positives
0
neutrals
0
negatives
RatingContent
Positive

On Jun 13, 2008, altagardener from Calgary, AB (Zone 3b) wrote:

From E. H. Moss (1959), rev. J. G. Packer (1983), Flora of Alberta:
"Stems slender, 1.5-4 dm high, often decumbent at base, glabrous or puberulent; basal leaves petioled, generally oblanceolate, glabrous; stem-leaves oblanceolate or lanceolate, sessile, entire; inflorescence spike-like and compact, or interrupted below; calyx 5 mm long, the lobes cuneate or obovate, abruptly cuspidate, scarious-margined and erose; corolla deep purplish-blue, rarely pinkish or white, 6-10mm long". Range: "Meadows and open woods. sYuk, BC to Sask, swMan, s to Calif, Colo".

Easy to grow in the garden here, and long-lived.

Positive

On Jan 22, 2005, Todd_Boland from St. John's, NL (Zone 5b) wrote:

This is an attractive beard tongue for the rock garden and one that is reasonably tolerant of wet-winter areas. It survived for 4 years in my Newfoundland garden and I am starting it again as I really liked the intense rich, blue-violet flowers. This species can also tolerate more acidic soil than most penstemon.