Rock Penstemon

Penstemon baccharifolius

Rock penstemon is a tough, somewhat woody Texas native that wedges into limestone crevices and blooms cherry-red for months in summer heat. A hummingbird favorite for hot, dry, alkaline rock gardens.

Family: Plantaginaceae
Type: shrub
Lifespan: perennial
Height: 1–2 ft
Spacing: 1–2 ft apart
Light: sun
Soil moisture: dry
Soil pH: alkaline, neutral
Bloom: June, July, August, September
Bloom colors: red, pink
Wildlife value: pollinators, hummingbirds, butterflies
Landscape uses: foundation, container
Native states: TX