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Planting
Days to maturity
Seasonal yields
Sow indoors · Direct sow · Transplant outdoors
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Plant · P-731
Hemp
Cannabis sativa
Hemp is a fast-growing annual reaching about 2.5 m tall grown for its fiber its oil-rich edible seed and a range of medicinal compounds. It wants full sun and rich moist loamy soil tolerating a wide pH range from strongly acid to alkaline and grows vigorously enough to crowd out weeds on its own. It self-sows readily enough to be listed as a noxious weed in some jurisdictions and cultivation is separately regulated by law in many places depending on the variety's psychoactive compound content - a legal constraint distinct from anything about its growing conditions.
Record at a glance
Growing profile
- Sun
- Full Sun
- USDA zone
- USDA 4–13
- Soil
- Sand · Loam · Clay
- Moisture
- Moist
Vertical layer
Herbaceous- Soil pH
- 4.5–8.2
- Plant type
- Annual
- Mature height
- 8.2 ft
- Mature spread
- 31 in
- Plant spacing
- 6–20 in
- Root type
- Tap
- Spread pattern
- Seed
Keep exploring
Similar plants
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Alfalfa
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Amaranth Greens
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Angelica
Angelica archangelica
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Anise
Pimpinella anisum
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Antelope Horns
Asclepias asperula
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Herbaceous · USDA 5–9
The deeper layer
Plan what comes next.
- Primary
- Locked ecological function
- Secondary
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- Byproduct
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Behind the record
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