⚪ Daikon radish
A big autumn root that needs deep, loose soil — anything in its way and it forks.
Daikon radish at a glance
Is Daikon radish frost tolerant?
Yes, through light frosts. Damage starts at -4°C and it is killed below -9°C.
What temperature does Daikon radish grow best in?
It grows best between 8 and 24°C. Below 4°C it stops growing altogether, and above 28°C it slows down.
How many days does Daikon radish take to mature?
About 55–75 days. That is a typical figure: it needs roughly 720 °C·d of warmth above 4°C, so a warm season gets it there sooner and a cool one later. The city calendars below give the sow and harvest dates for each place.
Is Daikon radish a cool-season or warm-season crop?
A cool-season crop. It does best in the mild weather of spring and autumn, and slows down in summer heat above 28°C.
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, 28) − 4), and Daikon radish is ready when that total reaches 720. That is why the same seed takes a very different number of days in Dublin and in Guangzhou.
| Base temperature | 4°CBelow this, the plant accumulates no growing degree days at all. |
|---|---|
| Degree days to maturity | 720 °C·dThe heat budget it must accumulate before it is ready to pick. |
| Comfortable range | 8–24°CWhere it grows without stress. |
| Frost damage below | -4°CLeaves start taking frost damage below this low. |
| Killed below | -9°CBelow this it does not come back. |
| Heat stress above | 28°CAbove this the plant slows down and stops setting fruit well. |
| Typical time to harvest | 55–75 days |
| Yield per bed | 4 roots |
Things worth knowing
- More than half a daikon often grows above ground; less of it is buried than it looks.
- Stones or unrotted manure make the taproot fork, which is the usual cause of a two-legged radish.
Where and when to sow Daikon radish
Pick your city to see the months when Daikon radish scores well against that city's real climate records: