Plant PulsePotato
Solanum tuberosum
Potato. 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 – Potato, Department of Agriculture Sri Lanka, accessed 2026-10-23: https://doa.gov.lk/hordi-crop-potato/; confirm for your microclimate.
Spacing
- In-row spacing
- coming soon
- Between-row spacing
- coming soon
HORDI states 60 × 25 cm and does not say which side is the row, so neither number is stored as in-row or between-row. Suitable areas on the page are the up country, plus heat-tolerant varieties in Jaffna and Kalpitiya. No planting month and no day count are stated.
Other sourced figures
- Soil pH
- 5.5–6.6
From farmer field experience
Based on hands-on growing experience from Sri Lankan farmers. Not yet verified against official sources.
- Days to first harvest: 85–110 days
- Days from planting the tuber.
- Farmer field notenoted Oct 2026
- Harvest window: 15–20 days
- How long the tubers stay at a useful size.
- Farmer field notenoted Oct 2026
Market months
Prices vary by week, market, and year. This is not financial advice.
Based on hands-on growing experience from Sri Lankan farmers. Not yet verified against official sources.
Higher prices: April–May
The gap between the up-country Yala crop and the dry-zone winter crop.
Farmer field notenoted Oct 2026
Higher prices: October–November
The gap between the up-country Yala crop and the dry-zone winter crop.
Farmer field notenoted Oct 2026
Lower prices: January–March
The gap between the up-country Yala crop and the dry-zone winter crop.
Farmer field notenoted Oct 2026
Lower prices: August–September
The gap between the up-country Yala crop and the dry-zone winter crop.
Farmer field notenoted Oct 2026
Planting windows
Colombo — Low Country Wet Zone
Official planting windows: coming soon.
From farmer field experience
Based on hands-on growing experience from Sri Lankan farmers. Not yet verified against official sources.
Not recommended in this zone
Direct sow or transplant
Farmer field notenoted Oct 2026
Not recommended in this zone. Tuber initiation needs cool soil. This is reviewed field experience, not an official Department of Agriculture prohibition.
Unverified — based on Farmer field experience, noted 2026-10-23; confirm for your microclimate.
No when-to-plant page for a zone where this crop is not recommended.
Mid Country
Official planting windows: coming soon.
From farmer field experience
Based on hands-on growing experience from Sri Lankan farmers. Not yet verified against official sources.
August–October
Direct sow
Farmer field experience. Using 85–110 stored days. Plant in Aug, first harvest about 85–110 days later (around November–December). Plant in Oct, first harvest around January–February. Calculated from the stored day count and the planting month. It is not a separate harvest calendar.
Farmer field notenoted Oct 2026
Mid Country, August–October, in the mid-country intermediate areas named with this note. Planted from tubers.
Unverified — based on Farmer field experience, noted 2026-10-23; confirm for your microclimate.
Up Country Wet Zone
Official planting windows: coming soon.
From farmer field experience
Based on hands-on growing experience from Sri Lankan farmers. Not yet verified against official sources.
May–July
Direct sow
Farmer field experience. Using 85–110 stored days. Plant in May, first harvest about 85–110 days later (around August–September). Plant in Jul, first harvest around October–November. Calculated from the stored day count and the planting month. It is not a separate harvest calendar.
Farmer field notenoted Oct 2026
Up Country Wet Zone, Yala, May–July. Planted from tubers.
Unverified — based on Farmer field experience, noted 2026-10-23; confirm for your microclimate.
October–December
Direct sow
Farmer field experience. Using 85–110 stored days. Plant in Oct, first harvest about 85–110 days later (around January–February). Plant in Dec, first harvest around March–April. Calculated from the stored day count and the planting month. It is not a separate harvest calendar.
Farmer field notenoted Oct 2026
Up Country Wet Zone, Maha, October–December. Planted from tubers.
Unverified — based on Farmer field experience, noted 2026-10-23; confirm for your microclimate.
Low Country Dry Zone
Official planting windows: coming soon.
From farmer field experience
Based on hands-on growing experience from Sri Lankan farmers. Not yet verified against official sources.
November–January
Direct sow
Farmer field experience. Using 85–110 stored days. Plant in Nov, first harvest about 85–110 days later (around February–March). Plant in Jan, first harvest around April–May. Calculated from the stored day count and the planting month. It is not a separate harvest calendar.
Farmer field notenoted Oct 2026
Low Country Dry Zone, November–January. Jaffna or Kalpitiya regosols are the situations named with this note. Planted from tubers.
Unverified — based on Farmer field experience, noted 2026-10-23; confirm for your microclimate.