Brown Indianhemp

Hibiscus cannabinus

Native to:
Angola, Benin, Botswana, Burkina, Burundi, Cameroon, Central African Republic, Chad, Congo, DR Congo, Eritrea, Eswatini, Ethiopia, Gambia, Ghana, Guinea, Guinea-Bissau, Ivory Coast, Kenya, Malawi, Mali, Mauritania, Mozambique, Namibia, Niger, Nigeria, Puerto Rico, Rwanda, Senegal, Sierra Leone, Somalia, South Africa, Sudan-South Sudan, Tanzania, Togo, Uganda, Yemen, Zambia, Zimbabwe

📍 View on iNaturalist →

Taxonomy

Division:
Magnoliophyta | - Flowering plants
Family:
Malvaceae
Genus:
Hibiscus
Species:
Hibiscus cannabinus
USDA Symbol:
HICA5

Growth Characteristics

Life Cycle:
Annual
Growth Habit:
Forb/herb
Height:
350 cm
Light Requirements:
Full Sun
Drought Tolerance:
Medium
Bloom Months:
jul,aug,sep,oct
Bloom Colors:
cream, yellow, purple

Wildlife Benefits

Bees:
★☆☆☆☆ Documented bee visitation (GBIF)
Caterpillars:
★☆☆☆☆ Recorded caterpillar host plant (HOSTS Database)

Keystone Species Ranking

Caterpillar Keystone:
★★★☆☆ Butterfly & moth species supported by this genus (NWF)

Host Plant for Caterpillars

Yellow scallop moth (Anomis erosa)

Garden & Ecology Notes

Wildlife Value:
bees

Soil Requirements

Soil Type:
fertile, well-drained loamy soil
pH:
6.0 - 7.5 (slightly acidic to neutral)
Drainage:
good drainage required
Moisture:
consistently moist
Notes:
Prefers alluvial soils in native habitat

Propagation & Germination

Stratification:
None required
Scarification:
Seed coat scarification required before sowing
Germination Time:
5–14 days
Notes:
Scarification improves germination. Seeds germinate readily in warm conditions (20-30°C).

The above propagation data sourced from Claude AI

ORGHPS Germination Guide: Sow @ 20°C. Seed germinates within 3 months Requires scarification. Nick or rub between sheets of sandpaper. * http://www.kew.org/science-research-data/kew-in-depth/difficult-seeds/species-profiles/hibiscus-cannabinus/index.htm

Source: Ontario Rock Garden & Hardy Plant Society