Pumpkin
Cucurbita maxima
Pumpkins are one of the most fun crops to grow, especially with children, and perfectly suited to the UK climate. From small, sweet-fleshed pie pumpkins to enormous exhibition specimens, there's a variety for every garden. Sow seeds on their edge in individual 9cm pots in late April, germinating on a warm windowsill at 20°C. Plant out after the last frost (late May–early June) into a well-prepared planting hole enriched with plenty of well-rotted manure or compost — pumpkins are hungry, thirsty plants. Space plants 1.5–2m apart as the trailing vines can spread 3–4m. Water generously, especially once the fruits start swelling, and feed fortnightly with a high-potash tomato fertiliser. For larger fruits, limit each plant to 2–3 pumpkins by removing additional female flowers. Place a tile or straw pad under developing fruits to prevent rot from ground contact. Harvest before the first frost when the skin has hardened and the stem has begun to dry — the skin should resist a thumbnail pressed into it. Cure in the sun for 10 days to harden the skin, then store in a cool, dry place. Well-cured pumpkins can last 3–6 months. 'Crown Prince' (blue-grey, superb flavour) and 'Jack of All Trades' (classic orange) are excellent UK varieties.
Plan where to grow Pumpkin using our vegetable garden planner.
When to Sow Pumpkin
Sow pumpkin in April, May.
Time to Harvest Pumpkin
Expect to harvest approximately 4 months after sowing.
Companion Plants
Expected Yield
2–5 fruits per plant depending on variety; 'Crown Prince' stores 4–6 months with excellent flavour.
Growing Tips
Place tile under fruits to prevent rot; cure in sun after harvest
Common Problems with Pumpkin
Powdery mildew on leaves
White, powdery coating on leaves is almost inevitable by late summer. It reduces photosynthesis but doesn't usually prevent fruit ripening. Improve spacing for air circulation, water at the base (not over the leaves), and remove the worst-affected leaves. Some gardeners spray with diluted milk (1:9 milk to water) as a preventative.
Fruit rotting on the ground
Developing pumpkins resting on damp soil are prone to rotting on the underside. Place a tile, piece of wood, or thick layer of straw beneath each fruit as soon as it starts swelling. This also makes slugs more visible. Check undersides regularly and move fruits if rot spots appear.
Poor fruit set (lots of male flowers, few female)
Pumpkin plants produce male flowers first, sometimes for several weeks before the first female flowers (recognisable by the tiny fruit behind the flower) appear. This is normal — be patient. In wet or cold weather, pollinating insects may be scarce, so hand-pollinate by transferring pollen from a male flower to a female using a soft brush.
Related guides
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Cherry Tomato
Solanum lycopersicum var. cerasiforme
Cherry tomatoes are one of the most rewarding crops for UK allotment growers. These small, sweet fruits ripen reliably even in cooler summers, producing heavy trusses from July right through to October. They thrive in grow bags, pots, or directly in the ground, making them versatile for any plot size. Pinch out side shoots regularly on cordon varieties to channel energy into fruit production. Bush varieties like 'Tumbling Tom' need no training and work brilliantly in hanging baskets. Feed weekly with a high-potash tomato feed once the first fruits set. The key to great flavour is letting them ripen fully on the vine rather than picking early.
Beefsteak Tomato
Solanum lycopersicum
Beefsteak tomatoes produce the large, meaty fruits that are perfect for slicing into sandwiches and burgers. They need a long growing season in the UK, so starting seeds early under cover is essential. These are almost always grown as cordons — train them up a single stem, removing side shoots weekly. Each truss produces fewer but much larger fruits than cherry types, often weighing 200–500g each. They benefit from greenhouse growing in cooler regions, though sheltered outdoor spots in the south can produce good results. Consistent watering is critical; irregular watering causes blossom end rot and fruit splitting. Stop the plant at 4–5 trusses to ensure fruits ripen before autumn.
Nantes Carrot
Daucus carota
Nantes carrots are the gold standard for flavour — sweet, crisp, and cylindrical with a smooth skin that barely needs peeling. They perform well in most UK soils but prefer light, stone-free ground to grow straight. If your soil is heavy clay, grow them in raised beds or deep containers filled with sandy compost. Sow thinly to avoid the need for heavy thinning, which attracts carrot fly. Cover rows with fine mesh or enviromesh as a physical barrier against carrot fly — this is far more reliable than companion planting alone. Successional sowing from March to July gives you carrots from June through to winter. Late sowings can be left in the ground over winter under a thick mulch of straw.
Butterhead Lettuce
Lactuca sativa
Butterhead lettuce produces soft, rounded heads with tender, buttery-textured leaves that melt in the mouth. It's one of the quickest salad crops to grow — ready in as little as 8 weeks from sowing. Unlike iceberg types, butterheads tolerate partial shade and are less likely to bolt in warm spells. Sow small batches every 2–3 weeks from March to September for a continuous supply. They work well as an intercrop between slower-growing vegetables like brassicas and leeks. Water consistently but avoid wetting the leaves to reduce the risk of grey mould. 'All the Year Round' is the classic UK variety and lives up to its name, performing well in almost every season.