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Penstemon – Firecracker

Penstemon eatonii

Firecracker Penstemon
Shrubs

A Southwest native perennial with a low mound of glossy green leaves and tall stems of scarlet tubular flowers from late winter into spring. Hummingbirds seek it out, and it asks for very little water.

Small
Full sunpreferred
BloomsSpring – Winter
Ask a designer about it
Mature sizeMound about 1′ tall and 2′ wide; flower stems to 3′
Growth rateFast
Water useLow
SunFull sun to part sun
BloomScarlet red, late winter into spring
Cold hardinessVery cold hardy; no concern in Phoenix
FoliageEvergreen, glossy green basal rosette
LifespanShort-lived perennial; may self-sow

Living with it in the Phoenix Valley

Watering

Follow the shrub schedule in our Landscape Care guide while it establishes. As a native, it should be kept lean once settled. It wants well-drained soil, and overwatering in heavy soil leads to rot.

Pruning

Cut the flower stems to the base once blooms fade. Removing spent stems promptly can encourage a second, lighter flush. Leave a few stems to drop seed if you would like new plants.

Summer

In the hottest months it rests as a low green rosette. A little afternoon shade helps in the hottest spots.

How our designers use it

Hummingbird gardens

The bright red tubes are built for hummingbirds and appear early in the year, when nectar is scarce.

Mixed with natives

It pairs well with desert marigold, blackfoot daisy and agaves for a layered spring show.

Vertical accents

The upright flower stems add height and movement to low plantings without taking much space.

Good to know

Around the pool

No thorns and little litter. Bees and hummingbirds visit the flowers, so set it back from seating and the water’s edge.

Pairs well with

Similar plants

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