Taxonomy

Division:

Magnoliophyta | - Flowering plants

Family:

Convolvulaceae

Genus:

Calystegia

Species:

Calystegia stebbinsii

USDA Symbol:

CAST21

Growth Characteristics

Life Cycle:

Perennial

Growth Habit:

Forb/herb , Vine

Height:

100 cm

Light Requirements:

Full Sun

Drought Tolerance:

Medium

Bloom Months:

apr,may,jun,jul

Bloom Colors:

white, pink

Wildlife Benefits

Bees:

★☆☆☆☆ Documented bee visitation (GBIF)

Butterflies & Moths:

★☆☆☆☆ Documented Lepidoptera association (GBIF)

Garden & Ecology Notes

Wildlife Value:

bees, butterflies

Fire Ecology:

Fire adapted — tolerates or benefits from fire

Fire Notes:

Resprouts from rhizomes following fire; historically associated with fire-maintained chaparral and gabbro soils.

Soil Requirements

Soil Type:

rocky, well-drained, nutrient-poor soil

pH:

6.0 - 7.5 (slightly acidic to neutral)

Drainage:

excellent drainage required

Moisture:

dry to moderate

Notes:

Endemic to serpentine soils in California

Propagation & Germination

Stratification:

Cold/moist stratification required — 30–90 days

Scarification:

Seed coat scarification required before sowing

Germination Time:

14–60 days

Notes:

Scarification of the hard seed coat improves germination. Cold stratification also beneficial.

The above propagation data sourced from Claude AI