Wildflower Archive

prairie wildflower

Scarlet bugler

Penstemon centranthifolius

Scarlet bugler (Penstemon centranthifolius)1 of 3
Edwards' botanical register

Native to California

Coast Ranges from Lake to San Diego counties in California, south to Baja California and Sonora

  • Light Full sun Sun tolerance
  • Moisture Dry Moisture preference
  • Zones n/a Cold to heat range
  • Bloom Apr–Jul Flowering time
  • Height up to 4 ft to 1.2 m
  • Life cycle Perennial Annual to perennial
Full details, see below

In the garden

A prairie wildflower for full sun and lean, dry soil. Its red flowers peak in May. At up to 4 ft, it suits meadows and sunny borders.

Growing conditions

Light
Full sun Partial shade Full shade
Moisture
Dry Moist Wet

When it blooms

The Scarlet bugler's red flowers bloom April to July, peaking in May. This late-spring display draws butterflies and bees.

Apr–JulJanFebMarAprMayJunJulAugSepOctNovDec

Scarlet bugler blooms redFoliage

Pollinators & wildlife

  • Butterflies Gray Hairstreak
    also Western Tiger Swallowtail, Marine Blue, Pale Swallowtail +2 more Boisduval's Blue, Pacuvius Duskywing
  • Bees Yellow-faced Bumble Bee also Grinnell's Small-Mason, Oval-headed Sweat Bee
  • Hummingbirds Anna's Hummingbird also Costa's Hummingbird
  • Also visited by
    • Wasps: Odynerus erythrogaster

Butterflies that use this plant

Documented host and nectar records. Each links to a planting guide for that butterfly.

Full plant details

Where it grows

Habitat
PrairieThe wild plant community it grows in.
Native range
CaliforniaUnited States (1): CA. Where it grows wild on its own, by state and province.
Native distribution
Coast Ranges from Lake to San Diego counties in California, south to Baja California and SonoraThe same native range, usually more exact than the state list, and often noting where it has spread beyond it.

Growing conditions

Light
Full sunHow much sun it takes, from full sun to full shade.
Moisture
DryThe soil dampness it prefers, from dry to wet.
Soil
Dry, well-drained soilThe soils it grows in naturally.

Growth & form

Height
up to 4 ft (to 1.2 m)Typical mature height.
Life cycle
PerennialWhether it lives a single season (annual), two (biennial), or returns for years (perennial).

Flowers, foliage & fruit

Type
WildflowerWhat kind of plant it is.
Bloom
Apr–JulWhen it flowers.
Flower color
RedThe bloom color, or colors.
Fruit/Seeds
Capsule; ripens May–DecThe seed or fruit it sets after flowering.
Toxicity
None knownWhether any part is poisonous to people or pets.