Plant PulsePumpkin
Cucurbita maxima
Pumpkin. 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 – Pumpkin, Department of Agriculture Sri Lanka, accessed 2026-10-23: https://doa.gov.lk/hordi-crop-pumpkin/; confirm for your microclimate.
Spacing
- In-row spacing
- coming soon
- Between-row spacing
- coming soon
Local strains 3 m × 3 m. A.N.K. 2.5 m × 2.5 m. Butternut 50 × 100 cm. The page does not say which side of the butternut pair is the row. No single calculator number is stored, because the varieties are not one range. The seed calculator says spacing is not stored as one number.
Planting holes about 30 × 30 × 30 cm.
Other sourced figures
- Soil pH
- 5.5–7.5
From farmer field experience
Based on hands-on growing experience from Sri Lankan farmers. Not yet verified against official sources.
- Days to first harvest: 75–120 days
- Days from sowing. The span depends on the variety.
- Farmer field notenoted Oct 2026
- Harvest window: 30–45 days
- How long the fruit stays at a useful size.
- 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.
May–June
Direct sow
Farmer field experience. Using 75–120 stored days. Plant in May, first harvest about 75–120 days later (around July–September). Plant in Jun, first harvest around August–October. Calculated from the stored day count and the planting month. It is not a separate harvest calendar.
Farmer field notenoted Oct 2026
Low Country Wet Zone, May–June.
Unverified — based on Farmer field experience, noted 2026-10-23; confirm for your microclimate.
October–November
Direct sow
Farmer field experience. Using 75–120 stored days. Plant in Oct, first harvest about 75–120 days later (around December–February). Plant in Nov, first harvest around January–March. Calculated from the stored day count and the planting month. It is not a separate harvest calendar.
Farmer field notenoted Oct 2026
Low Country Wet Zone, October–November.
Unverified — based on Farmer field experience, noted 2026-10-23; confirm for your microclimate.
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.
April–May
Direct sow
Farmer field experience. Using 75–120 stored days. Plant in Apr, first harvest about 75–120 days later (around June–August). Plant in May, first harvest around July–September. Calculated from the stored day count and the planting month. It is not a separate harvest calendar.
Farmer field notenoted Oct 2026
Mid Country, April–May.
Unverified — based on Farmer field experience, noted 2026-10-23; confirm for your microclimate.
October–November
Direct sow
Farmer field experience. Using 75–120 stored days. Plant in Oct, first harvest about 75–120 days later (around December–February). Plant in Nov, first harvest around January–March. Calculated from the stored day count and the planting month. It is not a separate harvest calendar.
Farmer field notenoted Oct 2026
Mid Country, October–November.
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.
Not recommended in this zone
Direct sow or transplant
Farmer field notenoted Oct 2026
Not recommended in this zone. Fruit set is limited at this elevation. 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.
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.
April–May
Direct sow
Farmer field experience. Using 75–120 stored days. Plant in Apr, first harvest about 75–120 days later (around June–August). Plant in May, first harvest around July–September. 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, Yala, April–May.
Unverified — based on Farmer field experience, noted 2026-10-23; confirm for your microclimate.
October–November
Direct sow
Farmer field experience. Using 75–120 stored days. Plant in Oct, first harvest about 75–120 days later (around December–February). Plant in Nov, first harvest around January–March. 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, Maha, October–November.
Unverified — based on Farmer field experience, noted 2026-10-23; confirm for your microclimate.