Tromboncino Rampicante Squash is a vigorous, vining Italian heirloom that behaves differently from typical squash.
Why Grow Tromboncino?
- More resistant to pests like squash vine borers than Zucchini
- Can be eaten young like zucchini or matured like winter squash
- Huge yields from one plant
- Thrives in hot Southern summers (great for Tennessee)
When to Plant (Tennessee)
- Late April–June
- Soil temp: 70°F+
- Frost sensitive—wait until after last frost
Site & Soil
- Full sun (6–8+ hours)
- Loose, fertile soil with compost mixed in
- pH: 6.0–7.0
Tip: This plant gets BIG—plan ahead!
Planting
- Space plants:
- On trellis: 2–3 feet apart
- On ground: 4–6 feet apart
Trellis vs. Ground Growing
Trellising is HIGHLY recommended
- Keeps fruit straight and cleaner
- Saves space
- Improves airflow → fewer diseases
Use:
- Cattle panel
- Arch trellis
- Fence
Fruit can grow 2–3 feet long, so give it support!
Watering
- 1–2 inches per week
- Water deeply at the base
- Avoid wetting leaves (helps prevent mildew)
Pollination
- Produces male & female flowers like other squash
- Usually pollinated by bees
- If needed, hand-pollinate for better yields
Feeding
- Mix compost before planting
- Side-dress with compost or balanced fertilizer once vines start running
Pest & Disease Resistance
Compared to regular zucchini, Tromboncino is:
- Less affected by squash vine borers
- More tolerant of heat and humidity
- Still watch for:
- Squash bugs
- Powdery mildew (late season)
Harvesting
As Summer Squash (Best for eating fresh)
- Harvest at 10–18 inches long
- Skin is tender, seeds undeveloped
- Flavor similar to zucchini but nuttier
As Winter Squash
- Let mature until skin hardens and turns tan
- Cure and store like Butternut Squash
How to Use
- Slice and sauté like zucchini
- Grill long sections
- Spiralize for noodles
- Mature squash: roast, soups, puree
Pro Tips for Tennessee Gardeners
- Start early for best yields before peak pest season
- Train vines upward early—they grow FAST
- Pick frequently to keep production going
- Great for replacing traditional squash in your garden