Light
Full sun
AtHomeGrower Plant Facts
Sunn Hemp
Crotalaria juncea
Sunn Hemp is a warm-season warm-season legume cover crop added to Fill My Space, Plant Facts, Zones, and Plant Care.
Soil mixture
Well-drained soil, even low fertility soils
Soil moisture
Water during establishment; handles heat once rooted
When to chop or terminate
Terminate before seed set, then use the residue as mulch, compost input, or green manure.
Use in the garden
Huge summer biomass and nitrogen in heat
Plant Diagnoser notes
Watch for yellowing leaves, brown tips, weak growth, pest residue, and soil that stays wet too long. Match symptoms against watering, light, soil drainage, airflow, and pest pressure.
Fill My Space tags
plant-type:cover-crops, category:cover-crops, cover-crops:enabled, fill-my-space:enabled, plant-facts:enabled, plant-care:enabled, tool:zones, cover-crop-group:legume, season:warm-season, light:bright-light, care:easy, environment:outdoor, location:outdoor, suitability:outdoor, function:nitrogen-fixation, zones:8-11, zone:8, zone:9, zone:10, zone:11, facts:sunn-hemp, plant:sunn-hemp, Outdoor, Full sun, Water during establishment; handles heat once rooted, Well-drained soil, even low fertility soils, easy, USDA Zones 8-11