How to Grow Ronde de Nice
Wikimedia Commons
Ronde de Nice
Cucurbita pepo
vegetableRonde de Nice is a distinctive round zucchini variety with pale green skin and a compact, globe-like shape. It is harvested young when 3-4 inches in diameter and offers a delicate, tender flavor ideal for stuffing and cooking whole. This French heirloom cultivar produces prolific yields on compact plants.
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Example Ronde de Nice timeline · Pittsburgh, PA (Zone 6b)
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Plant Ronde de Nice
Around Apr 17Near Pittsburgh's average last spring frost.
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Tend & protect
Late spring–summerWatering, feeding, and pest-watch reminders.
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Harvest Ronde de Nice
Around Jun 1≈ 45 days after planting
Sample dates for Pittsburgh, PA. Sign up to get exact Ronde de Nice dates for your own zip code.
Growing Conditions
Soil
Growing Zones
Find your zone →Thrives in zones 4-9; grows as annual in cooler zones, tolerates warmth well
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Get my Ronde de Nice timeline →Growth Stages
Seedling
2-3 weeksCotyledons emerge and first true leaves appear; seedlings are tender with rapid growth
Maintain warm soil (70-80°F), keep soil moist, provide bright light to prevent leggy growth. Thin to strongest seedling if direct seeding.
Vegetative
3-4 weeksPlant develops 4-6 true leaves, vining growth begins, stems elongate and branch
Ensure consistent moisture and regular feeding with balanced fertilizer every 2-3 weeks. Support or trellis if desired. Monitor for pests.
Flowering
2-3 weeks, overlaps with fruitingLarge yellow flowers emerge; male flowers appear first, followed by female flowers with small round fruits behind petals
Maintain consistent watering; inconsistent moisture causes flower/fruit drop. Hand-pollinate if bee activity is low by transferring pollen with a brush. Avoid high nitrogen fertilizers.
Fruiting
2-3 weeks from flower to harvestSmall round fruits develop rapidly and swell to mature 3-4 inch diameter; skin remains pale green
Check plants every 2-3 days for harvest-ready fruits. Over-mature fruits become seedy and tough. Consistent watering prevents splitting and bitterness.
Harvest
Ongoing through seasonFruits are firm, 3-4 inches in diameter, with tender skin that yields slightly to pressure; entire plant remains productive
Use a sharp knife or pruner to cut fruit with a short stem. Regular harvesting encourages continued production. Plants produce for 4-6 weeks.
Companion Planting
Plan your garden →Plant with:
Avoid planting near:
Common Pests
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Plant resistant varieties, use row covers until flowering, wrap stem bases with aluminum foil, inject spinosad into stems if larvae present, remove infested vines promptly
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Use row covers, apply spinosad or pyrethrin sprays, plant trap crops like radish nearby, remove and destroy beetles by hand
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Ensure good air circulation, avoid overhead watering, apply sulfur or neem oil spray weekly when symptoms appear, remove heavily infected leaves
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Hand-pick eggs and nymphs regularly, use row covers, spray neem oil or insecticidal soap, plant trap crops
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Increase humidity with consistent watering, spray with water to dislodge, apply insecticidal soap or sulfur, avoid excessive nitrogen
Uses
Stuffed whole zucchini
CulinaryRonde de Nice is ideally sized for halving lengthwise and stuffing with rice, meat, cheese, and herbs before baking. The tender flesh cooks quickly and the round shape creates an elegant presentation. [source]
Raw and cooked dishes
CulinaryThe delicate flesh can be sliced thin for raw salads, grilled whole, sautéed, or roasted. Young specimens are less seedy and more tender than elongated zucchini varieties. [source]
Garden ornament
HouseholdThe distinctive round shape and pale green color make Ronde de Nice visually striking in vegetable gardens and raised beds. It's decorative enough for ornamental kitchen gardens. [source]
Pickling and preservation
CulinaryYoung, firm fruits can be pickled whole or quartered for a unique presentation and tender texture in preserved preparations. [source]
Low-calorie, nutrient-rich vegetable
MedicinalZucchini is rich in vitamins C and K, potassium, and antioxidants while remaining very low in calories, making it a nutritious addition to healthy diets. [source]
This is not medical advice. LizPlants is not a medical resource. Always consult a qualified healthcare professional before using plants medicinally.
Harvest Tips
Harvest when fruits are 3-4 inches in diameter with tender, pale green skin—this is the ideal size for stuffing whole. Cut with a sharp knife leaving a short stem. Pick every 2-3 days to encourage continuous production; over-mature fruits become seedy, bitter, and reduce future flowering. Plant typically produces for 4-6 weeks.
Fun Facts
- 🌱 Ronde de Nice is a French heirloom variety that has been grown in the Mediterranean region since at least the 19th century. Its name reflects its origins near Nice on the French Riviera.
- 🌱 Unlike elongated zucchini varieties, the round shape is perfect for elegant presentation and whole stuffing, making it a favorite in French and Italian cuisine where it's often called 'Tonde di Nizza' or 'Courgette Ronde.'
- 🌱 The plant produces both male and female flowers; male flowers appear first and do not set fruit, while female flowers (identifiable by a tiny fruit behind the flower) are the only ones that develop into zucchini.
Gardening Terms
New to gardening? Learn about terms used in this guide:
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