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Penstemon

Penstemon heterophyllus

Also known as Bunchleaf Penstemon

herbaceous☀️ full sun💧 low water❄ Hardy: Zone 8b – Zone 10b

Climate Match for your location

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Foothill penstemon is a California native perennial with narrow, blue-green foliage and tubular flowers ranging from blue to purple or pink. It thrives in dry, sunny conditions and attracts hummingbirds and pollinators.

Why grow it

Foothill penstemon offers reliable performance in xeric gardens where many perennials struggle, with a longer bloom window than some native penstemons and consistent hummingbird attraction. Compared to hybrid penstemon selections, this species requires minimal supplemental water once established and performs well in poor soils, making it a practical choice for low-input landscapes. Its narrow foliage and modest mature size fit tighter spaces than some taller penstemon cultivars.

Watch out for

This penstemon prefers excellent drainage and may decline in heavy clay or poorly drained soils, even when water-restricted otherwise. Plants can look sparse or decline if shaded more than a few hours daily, since full sun promotes dense growth and sustained flowering. Deadheading spent flowers extends the bloom period but is not essential for plant health.

Overview

Form
Upright
Growth Rate
moderate
Size
1.5–2′ tall × 1–2′ wide
Dormancy
deciduous
Family
Plantaginaceae
pollinator nectarywildlife benefit

Native to the United States

Native Range

California native

Native to: California

Seasonality

Bloom Season

J
F
M
A
M
J
J
A
S
O
N
D

Season of Interest

SpringSummer

Notable Cultivars

Margarita BOP and Blue Springs are selected forms prized for their vivid blue-violet flowers and reliable garden performance in dry climates.

Similar shrubs you might consider:

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Companion Planting

Plants well with