Plant PulseRadish
Raphanus sativus L.
Radish. Sourced figures stay next to their citation. Planting windows are listed for locations that have one. Unsourced fields say coming soon.
Unverified — based on HORDI Crop – Radish, Department of Agriculture Sri Lanka, accessed 2026-10-23: https://doa.gov.lk/hordi-crop-raddish/; confirm for your microclimate.
Spacing
- In-row spacing
- 10 cm
- Between-row spacing
- 25–30 cm. Seed calculator uses 30 cm, the wider end.
10 cm between plants. 25–30 cm between rows. The seed calculator uses 30 cm, the wider end of the between-row range.
Other sourced figures
- Soil pH
- 6–7.5
From farmer field experience
Based on hands-on growing experience from Sri Lankan farmers. Not yet verified against official sources.
- Days to first harvest: 40–50 days
- Days from sowing.
- Farmer field notenoted Oct 2026
- Harvest window: 10–15 days
- How long the roots stay at a useful size.
- Farmer field notenoted Oct 2026
Planting windows
Colombo — Low Country Wet Zone
Year round: Year round
Direct sow
Farmer field experience. Using 40–50 stored days. First harvest is about 40–50 days after planting. Calculated from the stored day count and the planting month. It is not a separate harvest calendar.
HORDI: can be grown throughout the year if adequate moisture is available, in all agro-ecological regions. Between-row spacing is stated as 25-30 cm, so only the 10 cm within-row figure is stored.
Unverified — based on HORDI Crop - Radish, Department of Agriculture Sri Lanka, accessed 2026-10-20: https://doa.gov.lk/hordi-crop-raddish/; confirm for your microclimate.