How to Grow Adzuki Bean
Vigna angularis
Tender Warm Season Single Harvest
Adzuki beans need warmth and a long season. Start indoors in late spring and plant out after all frost risk passes into fertile well-drained soil in full sun. Water steadily during flowering. Harvest dry pods in autumn once they rattle and finish drying indoors if the season ends early.
When to Start
Start seeds indoors 3 weeks before your last frost date. Transplant outdoors once night temperatures stay above 10°C and soil has warmed to at least 15°C.
Don't know your frost date? Find it here →
Growth Stages
Sow seeds
Day 0 Germination
~7 days Flowering
~60 days Fruiting
~75 days Harvest
~120 days Seed to harvest ~120 days
Approximate days from start
Care Essentials
- Low-nitrogen feed at planting only. As a legume, adzuki beans fix their own nitrogen — avoid high-nitrogen feeds which reduce yield.
- Warm-season crop needing a long growing season. In cool climates start indoors and use a polytunnel or warm sheltered spot. Short-day plant — flowers as days shorten in late summer.
Growing Conditions
- Min. soil temperature
- 15°C+
- Germination temperature
- 18–30°C
Don't know your frost date? Find it here
- Sow indoors
- —
- Transplant out
- —
- First harvest
- —
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Spacing & Planting
| Plant spacing | 10 cm |
| Row spacing | 45 cm |
| Sow depth | 3 cm |
| Mature height | 50 cm |
| Mature spread | 30 cm |
Growing Conditions
| Min. soil temperature | 15°C |
| Germination temperature | 18–30°C |
| Base growth temperature | 10°C |
| Min. daylength to start | 10h |
| Photoperiod sensitivity | short day |
Frequently Asked Questions
- How far apart should I plant Adzuki Bean?
- Plant Adzuki Bean 10cm apart with 45cm between rows.
- When can I harvest Adzuki Bean?
- Adzuki Bean is ready to harvest approximately 100 days after transplanting.
- Is Adzuki Bean frost hardy?
- Adzuki Bean is classified as Tender.
