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One of my must-have multi-purpose plants. It's good to eat small (as a courgette) and ripens and stores once large (as a winter-storing squash). You can eat the growth tips too. It's also exceptionally disease-free (particularly mildew). A lovely ornamental climber. Passionately recommended.

Please note, illustrated packets are being introduced gradually over the coming months, availability may vary.

Genus Cucurbita
Group/Species pepo
Variety Tromboncino
Common Name Summer Squash
Border Position Kitchen Garden
Soil Type Broad Tolerance
Site Full Sun
Moisture Moist but Well-drained
Height 60cm (24in)
Spacing 1.8m (6ft) - Trailing
Sowing, Seeds, Planting Sow under cover in late March. Soak the seed overnight, then sow 2.5cm vertically, one to a 9cm pot. The seeds are large and may rot off before they germinate if sown flat. Once they have 5 or 6 leaves, they're ready to go out. Harden them off by standing them outside during the day and then plant them out once the frosts are over. You can also sow them direct into the ground from April-May outside if you wait until after the frosts.
Care Tips Water well, and avoid the plant becoming dry. Mulch well, and dig in plenty of manure. Will need a frame to climb up. It is important to pinch out the triffid-like growth tips once they reach 1.8m and to keep doing so! This helps the fruit to set.
Harvesting Late June to October. The fruits are best at about 25cm long, but can grow up to 1 metre!
Cooking Notes Perfect for grilling, roasting, frying, or eating raw in salads.
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
  • Sow Under Cover/Plant Indoors
  • Direct Sow/Plant Outdoors
  • Flowers/Harvest
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Squash 'Tromboncino' reviews

* * * * - Average based on 15 reviews

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Reviewed 20th April 2020 by Simon

Overpriced, unhelpful and rude, I won’t be using them again.

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Reviewed 8th August 2019 by Monica

Good service not used tet

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Reviewed 2nd August 2019 by Lianne

Found it hard to germinate, but that was down to my inexperience. They need warmth to germinate. Currently growing up my arch. I think i should started them sooner. They are only halfway up at moment.

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Reviewed 1st August 2019 by Helen

3 plants from 10 seeds planted in the greenhouse.

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Reviewed 31st July 2019 by Linda

Growing well with squash forming.

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Reviewed 31st July 2019 by Wendy

Out of 4 seeds planted only 2 germinated and 1 grew, so far it’s about a metre high with a couple of squash on it. Hopefully it will catch up but not as good as I’d hoped.

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Reviewed 24th November 2018 by Nicole

Just one survived but was performing well.

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Reviewed 14th November 2018 by Isabel

Hilarious plants that arrived in good time.

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Reviewed 7th November 2018 by Penny

Never grown these before so the size and spread surprised me! Will give them extra room next year

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Reviewed 7th November 2018 by Sarah

These tiny seedlings arrived wrapped in paper and wilted. I managed to revive them and they eventually grew and fruited. I emailed feedback and was sent 3 more dry wilted seedlings. Not using lots of plastic is a good thing but a small wrap of foil would not have gone amiss

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Reviewed 7th November 2018 by Gaynor

Needed more attention that I gave it....my 7 year old neighbour did better than me and won a first prize in the local show! Just goes to show....

Splendid enormous squash

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Reviewed 13th August 2018 by Jane Heritage

I bought 3 of these plants and put them in a newly broken bit of ground, in soil half and half with home made compost. They have a sturdy 5 foot hazel frame to climb. I now need a machete to get through them to pick the fruit! I run a cafe and we have had courgettes to feed every customer all summer. I am now growing them on to harden as winter squash. They certainly loved this summer's heat, they have not been so successful in previous years.

Tromboncino - super squash!

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Reviewed 11th April 2017 by Cara James

Grew 6 of these last year up and over a rose arch with tagetes linnaeus underneath. Just beautiful! Not only does the foliage and huge flowers look lush and almost tropical, but the fruits store really well for winter and are superb in stews and soups seasoned with some warming spices.
They are obviously hungry plants so I would say using planting pockets with lots of well rotted manure dug in is a must, and to mulch with garden compost to reduce moisture loss is certainly worth the effort.
Another added bonus is that as long as you train and tie them in as they grow the fruiting stem grows thick enough to hold the weight of the large fruit - which saves a lot of flaffing around, having to support the fruit with old tights as you have to do with some winter squash grow vertically, which is quite ungainly and not ascetically pleasing in the garden. I can't praise this squash plant highly enough, especially with its double function of being like a courgette when small and yet being a winter squash and storing so well. If one can only grow one squash then this is it, I'm just ordering more to grow over a pergola this year. Happy days!
Thank you Sarah for introducing me to this super squash!

Fun but not always successful in northern climes ...

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Reviewed 13th March 2015 by Rachel Bell

This will be my forth year of growing Tromboncino: I really enjoy growing them and they look great climbing up wigwams or the wall. But for me (in a walled garden in a chilly Scottish glen) the amount of fruit I get is very variable - sometimes not much at all - but always delicious when I do.

My monster

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Reviewed 28th August 2014 by Helena Johnson

This is my third year of growing Tromboncino courgettes and the best one yet!! My monster measures 103cm and keeps growing; even though I let them grow big they're still very tasty. I shall submit the latest photo on your Facebook page.