When should I sow pumpkin seeds in the UK?

Late April to early May indoors at 18–22°C. Don't sow earlier — pumpkin seedlings grow fast and you'll have unmanageable plants by planting-out time. Don't sow direct outdoors except in late May in sheltered south-coast gardens; emergence is patchy in cold soil.

How much space do pumpkins need?

A lot. Standard cultivars (Crown Prince, Cinderella, Atlantic Giant) sprawl 2–3 m in every direction from a single plant. Compact bush varieties (Baby Bear, Jack Be Little, Sweet Lightning) stay within 1 m. For most UK gardens, the compact varieties are the practical choice; full-size pumpkins need an allotment or dedicated patch.

How do I get really big pumpkins?

Three things. (1) Limit fruit per plant — one fruit per plant for show; 2–3 for huge eating pumpkins. Pinch off all later flowers. (2) Feed heavily — high-potash liquid feed weekly; fresh manure dug in before planting. (3) Water consistently — twice a week deeply; never let the plant dry out. Atlantic Giant and Dill's Atlantic Giant are the cultivars to grow for show.

When is a pumpkin ready to pick?

Three tests, all should pass. (1) Stem corky and brown: the green stem turns woody and brown when fruit is mature. (2) Hollow sound when tapped: a ripe pumpkin sounds hollow; a green one sounds dull. (3) Full colour: fully orange, blue, white or whatever the variety should be — no green left except possibly stripes. Pick before the first hard frost.

How do I cure and store pumpkins?

Cure for 2 weeks after picking: lay the pumpkins in the sun outdoors (cover at night if frost is forecast), or under cold glass in a greenhouse. The skin hardens and the stem seals — essential for storage. Store at 10–15°C in a cool dry well-ventilated place. Don't refrigerate; don't stack pumpkins together (the points of contact rot). Cured pumpkins keep 4–6 months for most cultivars; Crown Prince keeps longest.

What's the difference between pumpkin and squash?

Mostly culinary, not botanical. Both are Cucurbita species — pumpkin is the term for round orange Halloween-style fruit (often C. pepo for thin-skinned, C. maxima for big eating types). Winter squash is the broader category that includes butternut (C. moschata, separate slug `winter-squash`), Crown Prince, Hubbard, and other long-storing types. Summer squash includes courgette and pattypan. They all need the same growing conditions; the differences are in size, shape, flesh density, and storage life.

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Cucurbita maxima

Sow pumpkin seed indoors from late April; plant out after the last frost (mid-May in southern England, early June in the north). Pumpkins are frost-tender annuals (RHS H1c) and need a sunny sheltered spot in rich moist soil with plenty of room — full-size cultivars sprawl 2 m or more in every direction. Plant 1.5 m apart for standard varieties, 1 m for compact (Baby Bear, Jack Be Little). Feed weekly with high-potash liquid once fruit sets. Pick when the stem is corky and the shell sounds hollow when tapped — usually mid-October. Cure in the sun or under glass for 2 weeks to harden the skin for storage. Crown Prince and Cinderella are the eating favourites; Atlantic Giant for show; Jack-O-Lantern for Halloween carving.

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