Description
Sunn Hemp Seeds grow Crotalaria juncea, a fast warm-season legume cover crop valued for upright biomass, soil cover, and bright yellow flowers when allowed to bloom. This 1,000-seed size is suited to garden blocks, food forest alleys, and seasonal green-manure plantings.
Why Grow It
- Fast warm-season cover crop for biomass, soil cover, and green-manure rotations.
- Bright yellow flowers add visual value if plants are left to bloom.
- A practical 1,000-seed size for garden beds, small field strips, and food forest alleys.
Growing Information
| Botanical name | Crotalaria juncea |
|---|---|
| Life cycle | Warm-season annual legume cover crop |
| Mature height | 4-7 ft. tall when grown for biomass and bloom |
| Light | Full sun |
| Bloom or harvest window | Yellow flowers may appear in warm weather about 8-12 weeks after sowing if plants are left to bloom |
| Seed count | 1,000 seeds |
| Sowing advice | Direct sow after frost once soil is warm. Broadcast or sow shallowly about 1/4-1/2 in. deep, firm into the soil, and keep evenly moist until established. Mow or cut before mature seed set if using as green manure. |
| Spacing | Broadcast densely for cover crop use, or sow 4-6 in. apart in rows for easier management |
| Germination | Usually 3-10 days in warm, evenly moist soil |
Best For
- warm-season cover crop
- green manure and biomass
- food forest alleys
- soil-building garden beds
- yellow flowering pollinator strips
Packet Details
Includes 1,000 seeds. Store seeds cool, dry, and dark until sowing. Use the growing table above as a planning reference for your local season.
Use Note
Use note: Sunn hemp is listed for garden cover-crop and soil-building use. It is not a culinary seed or cannabis hemp product.
FAQ
Is Sunn Hemp the same as cannabis hemp?
No. Sunn hemp is Crotalaria juncea, a legume cover crop. It is not Cannabis and is sold here for garden cover-crop use.
When should I sow Sunn Hemp?
Sow after frost when soil is warm and active growth can continue through the warm season. It performs best in full sun.
Should I let it make seed?
For cover crop use, many gardeners mow or cut before mature seed set so the planting contributes biomass without becoming hard to manage.
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