Cottontop Cactus

Homalocephala polycephala

Native to:
Mexico, United States

📍 View on iNaturalist →

Taxonomy

Division:
Magnoliophyta | - Flowering plants
Family:
Cactaceae
Genus:
Homalocephala
Species:
Homalocephala polycephala
USDA Symbol:
ECPO2

Growth Characteristics

Life Cycle:
Perennial
Growth Habit:
Succulent
Height:
30 cm
Light Requirements:
Full Sun
Drought Tolerance:
High
Bloom Months:
apr,may,jun
Bloom Colors:
pink, magenta

Wildlife Benefits

Bees:
★☆☆☆☆ Documented bee visitation (GBIF)

Garden & Ecology Notes

Wildlife Value:
bees, hummingbirds
Deer Resistant:
Yes

Soil Requirements

Soil Type:
sandy, well-drained, nutrient-poor soil
pH:
6.0 - 7.5 (slightly acidic to neutral)
Drainage:
excellent drainage required
Moisture:
dry to moderate
Notes:
native to arid regions, prefers desert-like conditions

Propagation & Germination

Stratification:
Cold/moist stratification required — 30–60 days
Germination Time:
14–60 days
Notes:
Seeds require cold stratification for 4-8 weeks to break dormancy; sow in well-draining cactus mix.

Pre-treatment: Single-step cold-moist stratification for temperate woodland species. for 60–120 days

Source: Claude AI