Taxonomy

Division:

Magnoliophyta | - Flowering plants

Family:

Brassicaceae

Genus:

Streptanthus

Species:

Streptanthus howellii

USDA Symbol:

STHO

Growth Characteristics

Life Cycle:

Perennial

Growth Habit:

Forb/herb

Height:

80 cm

Light Requirements:

Full Sun

Drought Tolerance:

Medium

Bloom Months:

may,jun,jul

Bloom Colors:

purple, white

Wildlife Benefits

Butterflies & Moths:

★☆☆☆☆ Documented Lepidoptera association (GBIF)

Garden & Ecology Notes

Wildlife Value:

butterflies

Deer Resistant:

Yes

Soil Requirements

Soil Type:

rocky, well-drained, nutrient-poor soil

Drainage:

excellent drainage required

Moisture:

dry to moderate

Notes:

native to serpentine soils

Propagation & Germination

Stratification:

Cold/moist stratification required — 30–60 days

Germination Time:

14–42 days

Notes:

Seeds may germinate irregularly; cool temperatures enhance germination.

The above propagation data sourced from Claude AI