Taxonomy

Division:

Magnoliophyta | - Flowering plants

Family:

Brassicaceae

Genus:

Streptanthus

Species:

Streptanthus gracilis

USDA Symbol:

STGR3

Growth Characteristics

Life Cycle:

Annual

Growth Habit:

Forb/herb

Height:

80 cm

Light Requirements:

Full Sun

Drought Tolerance:

High

Bloom Months:

apr,may,jun,jul

Bloom Colors:

purple, white

Wildlife Benefits

Butterflies & Moths:

★☆☆☆☆ Documented Lepidoptera association (GBIF)

Garden & Ecology Notes

Wildlife Value:

butterflies

Deer Resistant:

Yes

Fire Ecology:

Fire adapted — tolerates or benefits from fire

Fire Notes:

As a California native annual/short-lived perennial, it can recolonize post-fire sites from seed bank.

Soil Requirements

Soil Type:

sandy, well-drained, low fertility soil

pH:

6.0 - 7.5 (slightly acidic to neutral)

Drainage:

excellent drainage required

Moisture:

dry to moderate

Notes:

native to rocky, serpentine soils

Propagation & Germination

Stratification:

Cold/moist stratification required — 30–60 days

Germination Time:

14–30 days

Notes:

Seeds may benefit from light for germination. Cool temperatures preferred.

The above propagation data sourced from Claude AI