🥢 Yardlong bean
The bean that shrugs off high summer — the hotter it gets, the harder it sets pods.
What the numbers mean
These are the actual parameters this game runs on. Growth is driven by growing degree days: each day contributes max(0, min(mean temp, 35) − 12), and Yardlong bean is ready when that total reaches 980. That is why the same seed takes a very different number of days in Dublin and in Guangzhou.
| Base temperature | 12°CBelow this, the plant accumulates no growing degree days at all. |
|---|---|
| Degree days to maturity | 980 °C·dThe heat budget it must accumulate before it is ready to pick. |
| Comfortable range | 18–33°CWhere it grows without stress. |
| Frost damage below | 4°CLeaves start taking frost damage below this low. |
| Killed below | 1°CBelow this it does not come back. |
| Heat stress above | 37°CAbove this the plant slows down and stops setting fruit well. |
| Typical time to harvest | 60–80 days |
| Yield per bed | 25 pods |
Things worth knowing
- The pods reach 40–80 cm, which is exactly how it got the name yardlong bean.
- It far out-performs French beans in heat: those drop their flowers above about 32°C, yardlongs keep setting.
Where and when to sow Yardlong bean
Pick your city to see the months when Yardlong bean scores well against that city's real climate records: