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UK Delivery 95p. Free On Orders Over £12.50

Pumpkin Seeds - Big Max

Botanical - Cucurbita maxima


Seed Count:
14 Seeds
Usually despatched within 24 hours
See "Delivery Charge" tab below
Price £1.82
Discounts applied automatically at checkout.
  • Buy 2 - 3 and pay only £1.67 each
  • Buy 4 or above and pay only £1.52 each

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14 Seeds.

Other Names - Winter Squash, Carving Pumpkin…

This variety can produce enormous sized pumpkins weighing up to 40kg. Its yellow orange flesh has a good flavour and the seeds are delicious when roasted. Not only is Big Max a good eating pumpkin it is also suitable for carving with the children. A good all-rounder.

  • An ideal variety to get children involved in the garden.
  • Produces good flavoured flesh suitable for pies, soups and stews.
  • Can produce a huge sized pumpkin suitable for carving.

Suitable For - Vegetable plot, raised beds

Sowing Months - Late April - May

Harvest - October - early November

Gardening is about finding the right balance! Try growing Companion Plants close by to help deter pests.

  • Amaranth or clover are great plants for attracting the ground beetle. This predatory beetle eats slugs, snails, slug and snail eggs, caterpillars and weed seed.
  • Try growing lavender in containers. When pumpkin plants start to flower position a few lavender plants close by to attract pollinating insects. Move the perennial lavender to other areas of the garden as and when needed.
  • French marigolds attracts pollinators to the area which in turn will pollinate the pumpkin flowers.
  • Low growing Limnanthes helps to keep the surrounding soil moist, supresses weed growth, attracts bees and hoverflies who's larvae feed on aphids. The plant can be dug in as green manure at the end of the season.
  • One of the best plants for attracting pollinating insects is the Phacelia. It also attracts aphid eating insects such as ladybirds and lacewings. At the end of the season it can be dug into the soil as a green manure.

Soil Preperation

Add some well rotted manure or compost to the growing area a few months before planting. 1 - 2 weeks before planting add some general purpose organic fertilizer and remove any weeds.

General InformationSowing & Planting Information
Habit Annual Module Grown & Transplants
Type N/A Distance between plants 150 cm
Position Full sun Distance between rows 150 cm
Average height 60 cm Direct Sowing
Average spread 200 cm Sowing distance between plants N/A
Hardiness Half hardy Distance between rows N/A
Overwintering Stored Sowing depth 1.5 cm - 2 cm
Soil Ph 6.5 - 7.0 Germination temperature 20 to 25℃
    Days to germination 7 - 14 days

Sowing Guide

Early Sowing/Module Sowing

Sow 1 seed on its edge per 5 - 7 cm pot. Ensure adequate heat is available for fast germination. Once germination starts reduce the heat and move the seedlings to a well lit location, a warm windowsill or warm greenhouse is ideal.
2 - 3 weeks after germination plant out. The plants will need hardening off over 7 - 10 days before planting out to reduce shock. Discard any weak or unhealthy looking plants.
Plant out at the distance suggested above. If the soil is poor with very little organic matter it will be beneficial at this stage to dig a trench about 30 cm wide and 30 cm deep for each individual plant to be planted in. Fill the holes with a 50 / 50 mix of rotted manure or compost and soil. Plant out carefully as the stems of the plants are very fragile and easy to snap or damage. Firm the soil around each plant and water well. Cover with horticultural fleece.

Direct Sowing

Pumpkin plants are vulnerable to the cold, it is best to start seeds indoors then a few weeks later plant out.

Growing On

Keep weeds under control. The plants are fast growing, with large leaves, long stems and require plenty of room. Water well in dry weather, water around the base of the plant rather than over the leaves.
They will benefit from a mulch of compost to help retain the moisture in the surrounding soil over the hot summer months. Pumpkin plants will grow long stems and if these stems are allowed to grow over bare soil, they will send down roots. This will allow the pumpkins to grow larger.
To grow overly large pumpkins allow as many of these stems to make root and start the plants as early as possible. Grow one pumpkin per plant and feed regularly with liquid fertilizer. Comfrey leaves steeped in water for a few days will produce an ideal liquid fertilizer, rich in nutrients ideal for fruiting vegetables.
Because of our short growing season and unpredictable weather here in the UK it is unlikely that a super sized large pumpkin can be achieved similar to the ones seen growing in the USA however a decent sized large pumpkin is still achievable here especially during hot summers. If however you prefer to grow pumpkins for eating, do not allow them to grow too large, 20 - 30 cm diameter is a good size for eating quality.


Pumpkins are best left on the plant to mature and harvested in October or just before the first frosts arrive. For storage purposes it is vital that the area where the fruit stem and fruit meets is not damaged in anyway when harvesting otherwise mould can set in and spoil the pumpkin.
To reduce the chances of damaging this area when harvesting rather than cutting the hard fruit stem, cut the plant stem on either side instead so you are left with a pumpkin with a stem resembling the letter 'T'.
Store the pumpkins as dry as possible and at room temperature. If stored correctly the pumpkins will keep until spring. If you find unripe pumpkins on the plants in October, they will not store well and are best treated like summer squashes and should be eaten soon after harvesting.
This variety is ideal for carving as well as eating if not too large.


The leaves of the Comfrey plant can be used to make a nutrient rich liquid fertilizer which is ideal for fruiting plants.

Delivery Information

All products on this website are for delivery to the UK only.

(Including Northern Ireland, the Highlands & Islands, Scilly Isles, Channel Isles and the Isle of Man). Delivery charges to these areas are the same as UK mainland stated below (with no additional surcharge). Delivery however may take longer than the times stated due to weather, distance etc.)

FREE DELIVERY on all orders over £9.98

When applicable, free 2nd class delivery will be automatically calculated at checkout.

STANDARD DELIVERY - Royal Mail 2nd Class (3 - 5 working days) - £0.95

For orders under £9.98, the "Standard Delivery" charge will be added automatically at checkout.

FAST DELIVERY - Royal Mail 1st Class (1 - 2 working days) - £1.52

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The 14 day cooling off period.

Under the 'Consumer Contract Regulation Act' you the consumer have the right to cancel a long distance order (such as a website order) at any time from the moment the order is placed up until 14 calendar days from the day after the goods are received.

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Damaged, Incorrect or Missing Goods.

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If however you receive goods that have been damaged, incorrect or missing, let us know within 72 hours of receiving the goods and we will either fully refund you (including postage costs), promptly send you a replacement or credit your Groseeds account, depending on your preference.

For full details, including how to contact us, please visit our Returns & Refunds page.

Faulty Goods.

We guarantee to supply you with the finest quality seeds in prime condition.

All products sold by Groseeds come with a 365 Days 100% Satisfaction Guarantee (from the date of purchase). For further information please visit our 12 Month Guarantee page.

If however within the 12 months you find the goods to be faulty please contact us ASAP so that we can resolve the issue promptly. Full instructions, including how to contact us can be found on our Returns & Refunds page.

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