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Zucchetta Tromboncino Summer Squash (Heirloom, 60 Days)

Italian Heirloom. This tasty zucchini grows like squash and will need a lot of room for its 15’ runners. Light yellow-green fruit is slender with a bulbous end and should be harvested at about 10”. Leaving it on the vine can produce variously twisted squash specimens 3’ long and 6” wide and can be used as winter squash. A firmer zucchini than we’re used to; the flavor is mild and delicious. Can be grown up a very strong trellis. Tolerates squash vine borer. 

20 seeds


Cucurbita moschata

Germination: 4-10 days

Germination Temperature: Optimum soil temperatures 70-85ºF

Seed Sowing Depth: 1/2-1" deep

Sowing Indoors: 3-4 weeks before the last frost. Provide 70-85ºF soil temperature. Sow 2-3 seeds per cell/pot. Sowing into individual biodegradable peat/cow pots reduces root damage when transplanting. Transplant 36-48" apart after the last frost. 

Sowing Outdoors: Sow after the last frost when the soil temperature is over 70ºF. Sow a few seeds every 36-48". 

Harvest: Check and harvest a few times a week. Cut or kindly twist off fruit, starting at a 3-4”.

Tips: Plant in fertile soil, amended with compost or well-rotted manure, and keep well watered. They benefit from growing on black plastic and by using row covers for weed, insect control, and more rapid growth.


Customer Reviews

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Customer Reviews
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Benjamin W.
United States
I recommend this product

Climbing Zuccini

A very cool variety. I have these growing in a greenhouse - climbing up a vertical cattle-panel trellis. They grow fast, they are great climbers, easy to train and produce a lot of fruit. So far, they haven't had problems with squash and cucumber beetles, but time will tell. The only negative thing I have to save is that the fruit can be very narrow. Not necessarily a problem, but my wife's first reaction was "what am I supposed to do with those). Looking forward to eating some tonight.

Bonnie O.
United States United States
I recommend this product


Good delivery. They are just shooting up. Hopeful

Ralph B.
United States United States
I recommend this product

Great squash!

Found everything I was looking for. This a great squash to trellis. Produces a firm great tasting fruit with no seeds in the neck. Holds up well on the grill with a superior flavor to regular zucchini.

Michelle G.
United States United States
I recommend this product

Great squash to grow and eat!

I absolutely loved how they squash cooked up and tasted. It grew quickly and gave me a large quantity for harvest. I have left a couple on the vines to grow large and use as winter squash. I am very pleased with this squash and will be growing it again.

Tammy B.
United States United States
I recommend this product

Zucchetta Tromboncino Summer Squash

Have not harvested yet but growing great on trellis!