Thompson & Morgan

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Squash 'Potimarron' (Winter)

Cucurbita maxima, Hubbard Squash

Half-hardy Annual

 Customer Rating
Trailing. A famous French heirloom, the name of Squash Potimarron derives from potiron (pumpkin) and marron (chestnut). Squash Potimarron is one of the very best for baking and roasting, fruits reach 1.25-1.75 kilos (3-4lbs) in weight with an aromatic chestnut like taste. Good for storage.

Culinary note: Some parts of these flowers are edible. For more details about edible flowers click here.

Ideal For:
kitchen garden
Flowering Period:
June, July, August
Sowing Months:
April, May
full sun
    • 1 packet (10 squash seeds)

    • Despatch: Within 1 days
    • £2.49
Sow April to May. Sow seeds 2cm (¾in) deep in 7.5cm (3in) pots of good seed compost at 21- 25C (70-77F). Place in a propagator or seal container in a polythene bag until after germination which takes 5-7 days.Seeds can also be sown direct outdoors once the soil has warmed. Do not sow in cold soils. Sow 2 seeds every 90cm (36in) and thin out to the best seedling. Ideally grow under cloches until the plant is established.

Gradually acclimatise to outdoor conditions for a few days before planting out after all frost risk has passed, 90cm (36in) apart each way.

Keep well watered throughout the season. Feed and mulch regularly.

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 and will be stated on the product page or in your order acknowledgement page and email.

Orders for packets of seed incur a P&P charge of £1.95.
Orders which include any other products will incur a P&P charge of £4.95.
Where an order includes both packets of seeds and other products a maximum P&P charge of £6.90 will apply - regardless of the number of items ordered.

Please see our Delivery / P&P page for further details and details of any surcharges that may apply to certain destinations.

  1. Potty about pottimarrons

    By Will Mainwaring 12-02-2016

    This was a real surprise in 2015. I pruned it to maximise energy to fruits. Allowed 3 squash per plant and had 3 plants. Started them off in pots, then transferred to pockets manured earlier in the seasoon. Used old pizza boxes to mulch for retaining moisture and weed suppression. Has a 2 litre lemonade bottle with the bottom cut off upside down on a bamboo cane near the root/planting pocket. Watered daily, fed weekly. As fruit formed, placed them on tiles. Resulting fruits are delicious and kept for a few months as I stored in cold frost free place away from pests. Definitely one to grow again.


    Thank you very much for your review. I am pleased to hear of the great success you have had with your Potimarron! Thank you for taking the time to let us know.

  2. Star of this season

    By Will Mainwaring 06-09-2015

    Just like Grace says, why grow butternut when you can grow these. They taste similar to butternut, but mature and ripen much more quickly, without suck a thick skin. If you take the time to trim/prune them properly, then around 3 squash from each plant is what you'd expect. They look like slightly smaller pumpkins. Roasting them is the way to go, 45 mins or so and they're perfect. Will definitely grow again next year.


    Thank you for taking the time to post your review. I am glad to hear that you have been happy with your order. I hope we can continue to be of service to you in the future.

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