Pumpkin 'Zombie' - Kew Vegetable Seed Collection

Sow pumpkin seed indoors from April to June for transplanting later on. Sow pumpkins seeds on their sides in small 7.5cm (3”) pots of seed compost at a depth of about 2.5cm (1”). Place in a propagator or seal pots inside a plastic bag at a temperature of 20-25C (68-77F) until germination which takes 5-7 days. Do not exclude light, as this helps germination. Once germinated, grow pumpkins on in cooler conditions until all risk of frost has passed and pumpkin plants are large enough to be transplanted outdoors. Gradually acclimatise them to outdoor conditions over 7 - 10 days before planting pumpkins outdoors in warm, well drained, humus rich soil in full sun, with shelter from winds. Choose a spot that receives at least 6 hours of direct sun per day.

Alternatively direct sow pumpkins outdoors from late May to June at a depth of 2.5cm (1”) and a distance of 1.2m (4’) apart. Sow 2 seeds per hole and thin out the weakest seedling per station after germination. Pile the soil into mounds about 15cm (6in) high. Plant each pumpkin plant on top of a mound to ensure good drainage and keep them well watered until they are established. Feed with a general fertiliser a few weeks after planting.

Feed and water pumpkins regularly. When growing pumpkins, a thick mulch of organic matter spread around the plants will help to conserve moisture at the roots. Hoe between plants regularly to prevent weeds from establishing. Pumpkins will begin to produce long stems which can be trained in a circle around the plant to prevent them spreading too far.

Leave pumpkins on the plant for as long as possible until the skin has hardened and the fruits start to crack near to the stem. Harvest pumpkins before the first frosts by cutting each fruit from the stem leaving several inches of the stem attached.

Seeds and garden supplies will normally be delivered within the time period stated against each product as detailed above. Plants, bulbs, corms, tubers, shrubs, trees, potatoes, etc. are delivered at the appropriate time for planting or potting on. Delivery times will be stated on the product page above, or in your order acknowledgement page and email.

Orders for packets of seed incur a delivery charge of £2.99.

Orders which include any other products will incur a delivery charge of £6.99.

Where an order includes both packets of seeds and other products, a maximum delivery charge of £7.99 will apply - regardless of the number of items ordered.

Large items may incur a higher delivery charge - this will be displayed in your shopping basket.

Please see our Delivery page for further details, and more information on different charges that may apply to certain destinations.

For more information on how we send your plants please visit our Helpful Guide on plant sizes.