Pumpkin Planting Calculator
Pumpkin hills, seeds, and harvest weight from row length.
What it does
Pumpkins sprawl further than gardeners expect. Hills spaced wide give vines room to run without swallowing paths.
The tool above divides row by seven foot hills. Fifty feet plants 7 hills from 35 seeds for about 175 lb. The metric match is 15 m for 7 hills and 79 kg.
Hills beat flat rows for pumpkins. Mounded soil warms faster and drains better, with five seeds per hill thinned to the strongest two or three.
Harvest follows maturity. Big carvers pass 25 lb per hill easily, while pie types count more fruits at smaller weights.
Vines claim the yard. Ten foot runners cross beds fast, so plan paths, fences, and mowing lines before planting.
How to use
- Pick imperial (ft) or metric (m).
- Enter row length.
- Read hills first.
- Read seeds next.
- Read harvest and order early.
Formula
- row
- Row or patch length.
Metric uses 2.1 m spacing with 11.3 kg per hill. Halfway rows round to whole hills.
Worked example
Example: 50 ft row
Imperial defaults: 50 ft row. These are also the default values, so the page opens on this answer.
- Row: 50 ft at 7 ft hill spacing.
- Hills: round(50 / 7) = 7 hills (7.14 rounds down).
- Seeds: 7 x 5 = 35 seeds.
- Harvest: 7 x 25 = 175 lb.
- Tool shows 7 hills, 35 seeds, 175 lb harvest.
Reference table
| Row | Hills | Harvest |
|---|---|---|
| 25 ft | 4 hills | 100 lb |
| 50 ft | 7 hills | 175 lb |
| 100 ft | 14 hills | 350 lb |
| 15 m | 7 hills | 79 kg |
Limits
- Count math only. Variety rules harvest.
- Young patches trail mature yields.
- Pests and mildew shift results.
- Curing needs dry storage.
Common mistakes
- Tight hills that tangle and mildew.
- Planting all seeds with no thinning.
- No room for ten foot vines.
- Harvesting before stems cork.
- Curing in damp piles.
Try it yourself
Quick checks. Answers sit tucked under each question.
100 ft row?
round(100 / 7) = 14 hills (14.29 rounds down). Seeds are 14 x 5 = 70. Harvest is 14 x 25 = 350 lb.
30 m metric?
round(30 / 2.1) = 14 hills (14.29 rounds down). Seeds are 14 x 5 = 70. Harvest is 14 x 11.3 = 158 kg after rounding (158.2).
Questions
Hills for 50 ft?
Divide row by 7 ft and round. Here round(50 / 7) = 7 hills.
Seeds per hill?
Five seeds per hill, thinned to the best two or three sprouts.
Harvest per hill?
Near 25 lb per hill at maturity in this plan. Big varieties beat it, small ones trail.
Hills or rows?
Hills warm faster and drain better than flat rows for sprawling vines.
Space for vines?
Yes. Vines run 10 ft plus, so paths and fences need planning.
Pest plans included?
No. Squash bugs and mildew need garden patrols.