Firecracker Penstemon
Penstemon eatonii
A vivid Southwestern native that lights up late winter gardens with scarlet spikes hummingbirds cannot resist.
Hardy in USDA zones 4-10; a cold-hardy evergreen rosette in the low desert that blooms in late winter and tolerates both low- and higher-desert elevations.
AMWUA Notes
A very low-water native that delivers vivid off-season hummingbird color and reseeds itself for a self-renewing display.
Care Guide
Water every 2-3 weeks during the cool bloom season and monthly or less in summer; the basal rosette needs dry summer conditions and sharp drainage to persist.
Cut spent flower stalks to the base after bloom to tidy the rosette and encourage reseeding; leave a few stalks if you want volunteers.
None needed — lean, unamended desert soil is ideal.
No serious pests; the main cause of loss is overwatering in summer heat.
A low evergreen rosette that sends up scarlet spikes in late winter and spring, then rests in summer; reseeds readily to renew short-lived plants.
Soil, Feeding & Propagation
Lean, gravelly, fast-draining desert soils; thrives in decomposed granite and rocky ground; needs dry summer soil.
Needs sharp, fast-draining soil.
None — thrives in lean desert soil without fertilizer.
Seed; reseeds readily to replace short-lived crowns. Divides and transplants poorly.
1.5 ft
Short-lived rosette with a fibrous crown; renews by reseeding. Summer overwatering, not root spread, is the concern.
Placement Tips
- •Mass the flower spikes in drifts so the late-winter scarlet reads as a bold sweep against dormant beds.
- •Plant among boulders and gravel where the low rosettes stay dry between rains.
- •Let it reseed freely — expect volunteers to replace older crowns over a few years.
- •Site in full sun with reflected heat; it needs no afternoon shade even in hot spots.
Features
Best Uses
Ecological Value
Attracts
Wildlife Value
Companion Plants
Quick Stats
Design Styles
Include in Your Project
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Use this care guide to maintain your Firecracker Penstemon. Questions about your landscape? Reach out anytime.
Data from 2024 AMWUA “Landscape Plants for the Arizona Desert” guide.