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.
In your Leaftide garden - Hardiness
- Tender
- Season
- Warm Season
- Harvest
- Single Harvest
- Spacing
- 10 cm
- Height
- 50 cm
- Sow depth
- 3 cm
- Min. soil temperature
- 15°C+
- Start from
- Seed
- Light
- Full sun
- Water
- Moderate
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
- —
Want your full season plan with reminders? Set up your garden free
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.