Garden Oracle / Drought and Heat Tolerant Gardening / Tucson - Phoenix - Arizona - California

Growing Penstemon pseudospectabilis:
Desert Penstemon

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Description
Form: Herbaceous stems growing from a woody base (subshrub).
Lifespan: Perennial.
Leaf retention: Evergreen.
Growth rate: Moderate to rapid.
Mature Size: 2-4' (60-120cm) high and 2' (60cm) wide.
Flowers: Magenta or pink, tubular, 0.75" (19mm) long, arrayed in spikes.
Bloom: Spring.
Fruit: Seed capsule.
Leaves: Green, two opposite leaves joined together around the stem in a boat shape, toothed edges. After seed production, the leaves turn magenta during a drought.
Stems: Stiff, upright to leaning.
Wildlife: The flowers attract hummingbirds and bees.
Toxic / Danger: No.
Origin: Arizona, California and Mexico.

Cultivation and Uses
USDA hardiness zones: 5-10.
Heat tolerant: Yes.
Drought tolerant: Yes.
Sun: Full sun to part shade. Best in part shade.
Soil: Well draining, dry, low organic content, pH 6.1-8.5 (slightly acidic to alkaline).
Water once established: Monthly, accommodating for rain. Do not water frequently. This plant needs only small amounts of water once established.
Mulch: No.
First Year Care: The soil must dry out between waterings. Cut off each stem after flowering so the plant can put more energy into establishing a strong root system instead of developing seed.
Prune: After the last freeze, remove winter damage.
Litter: Low.
Propagation: Seed sown in the fall or stratified one month and sown in the spring. This plant easily reseeds in the wild.
Uses: Ornamental, hummingbird garden, low water (xeriscape) garden.

Comments
This plant is a member of the Penstemon and Plantain family (Plantaginaceae). Other common names are Canyon Penstemon and Arizona Penstemon.



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Penstemon pseudospectabilis: Desert Penstemon

Penstemon pseudospectabilis: Desert Penstemon - seed pods

Latest update: September, 2024
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