Crop profile

Pumpkin crop profile

A vigorous, spreading crop, best allowed to run in full season and tended until fruits mature.

Italiano

Starting method

Direct sowing or transplanting

Direct soil

16 °C

Transplant soil

16 °C

Night minimum

10 °C

Frost buffer

14 days

Heat stop

36 °C

Harvest

90–120 days

Indoor lead

21 days

Key temperatures

0
5
10
15
20
25
30
35
40 °C

Below 16 °CCold risk: slower growth or cold damage.
16 °CMinimum range to start: direct sowing from 16 °C, transplanting from 16 °C.
16–31 °CBest range for growth and production.
31–36 °CPerformance drops and plants move into stress.
Above 36 °CPause transplants: heat stress risk.

Pumpkin cycle

1. Start indoors
Average time:
21 days
2. Direct sowing or transplanting
Soil: at least 16 °C
Night minimum: at least 10 °C
3. Growth
Ideal temperatures 16–31 °C
Avoid peaks above 36 °C
4. Harvest
First harvest around:
90–120 days after starting

How to start

Recommended method: direct sowing or transplanting.
Prepare seedlings with mild, steady temperatures.
Start when soil and nights are stable above the crop thresholds.

Temperatures to respect

Direct-sowing soil: minimum 16 °C.
Transplant soil: minimum 16 °C.
Night minimum: minimum 10 °C.
Heat stop: 36 °C.
Suggested frost buffer: 14 days.

Harvest timing

Cycle to first harvest: about 90–120 days.
Harvest gradually as produce reaches maturity.

Seasonal notes

Protect young plants from late frosts and thermal swings.
In summer, avoid water stress and heat peaks above 36 °C.
Steady growth improves development and harvest quality.

FAQ and sources

When should you sow or transplant pumpkin?

Pumpkin needs stable warmth: soil at least 16 °C, nights above 10 °C, and about 14 days after the last frost. You can direct sow or prepare seedlings 21 days before transplanting. Do not keep them too long in small pots, because cucurbit roots suffer when they become tangled. Choose a full-sun position with rich soil and plenty of space. In small gardens, use compact varieties or guide vines along the edges.

How much space do pumpkins need?

Much more than many other crops. Traditional pumpkins send out long vines and large leaves, so they need distance and air. Small or bush varieties suit compact gardens better, but they still need fertile soil and water. Do not crowd plants: too much competition reduces fruit and increases leaf diseases. If space is limited, grow one well-fed plant instead of three weak ones, or train small pumpkins on strong supports.

How many days do pumpkins take to harvest?

Pumpkins have a long cycle, about 90-120 days. Harvest when the skin is hard, the colour is full, and the stalk looks dry and woody. Do not pick too early if you want storage: an immature pumpkin stores poorly and has less developed flavour. Cut while leaving a piece of stalk, but do not use it as a handle. After harvest, cure pumpkins in a warm, dry, ventilated place.

Why does pumpkin make flowers but no fruit?

At first, pumpkin often produces many male flowers; fruit comes from female flowers, which have a small swelling at the base. If fruit is still missing, check pollination, heat, watering, and plant vigour. Rain or few insects can reduce fruit set. Drought and extreme heat, even with a high stress limit around 36 °C, also affect the crop. Grow flowers for pollinators and keep water steady during flowering and fruit swelling.

How should you water and feed pumpkin?

Pumpkin needs rich soil and deep watering. Before sowing, incorporate mature compost; during growth, keep soil cool with mulch. Water at the base, not on the leaves, to reduce disease. Water is most important during flowering and fruit swelling; toward ripening you can reduce it slightly to help skin hardening and storage. Avoid too much nitrogen late in the season: it makes huge vines but can delay pumpkin ripening.