PENSTEMON serrulatus
(PENTSTEMON serrulatus)

Beard Tongue



Height: 18-24" (45-60cm)
Flowering Time: Summer
Flower Colour: Purple, white

Botanical Classification:


Angiospermae (Angiosperms)
Subclass: Dicotyledonae (Dicotyledons)
Superorder: Asteridae (Daisy Superorder)
Order: Scrophulariales (Figwort Order)
Family: Scrophulariaceae (Figwort Family)
(under the APGIII system, this plant is now in the
Plantaginaceae Family)
Genus: Penstemon (Beard Tongue)
Species: serrulatus (slightly serrated)
Penstemon serrulatus

Penstemon serrulatus is a shrubby leafy perennial, unlike the more familiar hybrids with their tall spikes of large tubular flowers. It is a small woody shrub, about 15" or so high, with lax bending stems and bright green toothed leaves. In summer, it bears tight flat-topped clusters of bright purple to blue flowers. There is also a white form.


Harvesting and Growing from Seed:


(68 days)

Seed Pod The seed pod is pointed, in a cluster with other seed pods.

Seed The seeds are greyish brown irregular corky-looking chips. There are many seeds in a pod.

Seedling The seedleaves are pointed. The first true leaves are nettle-shaped.

(You can check the meaning of any technical terms new to you in the Botany section of the site)

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