How to Grow Black Nightshade
Solanum nigrum
Black Nightshade (Solanum nigrum) is a warm-season leafy green widely eaten in Africa and Asia. Not to be confused with Deadly Nightshade (Atropa belladonna). Sow after last frost in fertile, moist soil in full sun or part shade. Plants grow 30-60 cm tall and self-seed freely. Pinch tips at 30 cm for bushier growth. Harvest young leaves and shoot tips continuously; always cook before eating. Berries are edible only when fully ripe and black. Frost-tender annual, killed by first frost.
When to Start
Start seeds indoors 4 weeks before your last frost date. Transplant outdoors once night temperatures stay above 10°C and soil has warmed to at least 15°C.
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Growth Stages
Approximate days from start
Care Essentials
- Balanced liquid feed every two weeks once established. Avoid high nitrogen which promotes leaf growth at the expense of flavour.
- Not to be confused with Deadly Nightshade (Atropa belladonna). Black Nightshade is a widely eaten leafy vegetable in Africa and Asia. Self-seeds readily and prefers warm, fertile soil with consistent moisture.
Growing Conditions
- Min. soil temperature
- 15°C+
- Germination temperature
- 18–30°C
Pet Safety
- Sow indoors
- —
- Transplant out
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- First harvest
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Spacing & Planting
| Plant spacing | 40 cm |
| Row spacing | 60 cm |
| Sow depth | 0.5 cm |
| Mature height | 60 cm |
| Mature spread | 45 cm |
Growing Conditions
| Min. soil temperature | 15°C |
| Germination temperature | 18–30°C |
| Base growth temperature | 10°C |
| Photoperiod sensitivity | day neutral |
Frequently Asked Questions
- How far apart should I plant Black Nightshade?
- Plant Black Nightshade 40cm apart with 60cm between rows.
- When can I harvest Black Nightshade?
- Black Nightshade is ready to harvest approximately 50 days after transplanting.
- Is Black Nightshade frost hardy?
- Black Nightshade is classified as Tender.
