How to Grow Nantucket Tomato

Nantucket Tomato

Solanum lycopersicum 'Nantucket'

vegetable

Nantucket is a determinate (bush-type) tomato variety bred specifically for coastal New England climates. It produces medium-sized, red fruits with excellent flavor and disease resistance, making it ideal for short-season growing regions. This compact plant is well-suited to container growing and small gardens.

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Example Nantucket Tomato timeline · Pittsburgh, PA (Zone 6b)

Plant Nantucket Tomato
Around Apr 17

Near Pittsburgh's average last spring frost.
Tend & protect
Late spring–summer

Watering, feeding, and pest-watch reminders.
Harvest Nantucket Tomato
Around Jun 26

≈ 70 days after planting

Sample dates for Pittsburgh, PA. Sign up to get exact Nantucket Tomato dates for your own zip code.

Growing Conditions

☀️

Sun: Full sun, 6-8 hours daily minimum; 8+ hours ideal for best fruit production

💧

Water: Consistent moisture, approximately 1-1.5 inches per week; water deeply at soil level to avoid wetting foliage and reduce disease. Avoid drought stress and overwatering, which can cause blossom-end rot and fruit cracking.

📏

Spacing: 24-36 inches

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Days to maturity: 70-80 days from transplant to first ripe fruit

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Planting depth: Start seeds indoors 1/4 inch deep, 6-8 weeks before last spring frost; transplant deeper (bury stem up to first true leaves) when moving to garden

Soil

Type: Well-draining, fertile loamy soil rich in organic matter

pH: 6.0-6.8

Amendments:

compost aged manure peat moss perlite for drainage balanced fertilizer (5-10-10)

Growing Zones

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Best suited to zones 4-7; thrives in cooler, shorter-season climates

4a 4b 5a 5b 6a 6b 7a 7b 8a

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Growth Stages

Seedling

2-3 weeks

Tiny cotyledon leaves emerge, followed by first true leaves with characteristic tomato leaf shape

Keep soil consistently moist but not waterlogged; provide bright light (grow lights if indoors); maintain 65-75°F temperature; thin to strongest seedlings

Vegetative Growth

3-4 weeks indoors; 1-2 weeks outdoors post-transplant

Plant develops 3-6 sets of true leaves and bushy foliage; stem thickens and root system expands

Harden off seedlings 1-2 weeks before transplanting; fertilize weekly with dilute fertilizer; ensure adequate light to prevent leggy growth; maintain consistent moisture

Flowering

2-3 weeks

First flower clusters (inflorescences) appear in leaf axils; yellow flowers develop in small groups

Provide consistent watering and warm temperatures (70-85°F); avoid excessive nitrogen which reduces flowering; maintain full sun; light shake or vibration aids pollination

Fruit Development

3-4 weeks

Flowers set fruit; small green tomatoes develop and gradually enlarge; plant becomes laden with developing fruit

Support plant with stakes or cages (determinate varieties need less support); maintain even moisture to prevent blossom-end rot and fruit cracking; mulch to regulate soil moisture; prune excessive foliage if needed for air circulation

Ripening & Harvest

2-3 weeks per picking window

Fruits change color from green to red; mature fruits are firm yet slightly yielding to gentle pressure

Continue consistent watering; reduce nitrogen and increase potassium for better flavor; pick fruits at full color; can pick mature green tomatoes and ripen indoors if frost threatens

Companion Planting

Plan your garden →

Plant with:

basil marigold parsley carrot onion borage nasturtium parsnip

Avoid planting near:

brassicas (cabbage, broccoli, cauliflower) fennel dill potatoes kohlrabi

Common Pests

Hand-pick large caterpillars daily; use Bacillus thuringiensis (Bt) spray for young caterpillars; encourage parasitic wasps
Spray neem oil or insecticidal soap; yellow sticky traps; reflective mulch; encourage natural predators
Increase humidity through misting; spray with water; use miticide or neem oil if severe; avoid excessive nitrogen fertilizer
Plant resistant varieties (Nantucket has good resistance); use disease-free seeds/transplants; rotate crops; improve soil drainage; remove infected plants
and (Phytophthora infestans, Alternaria solani)
Improve air circulation; water at soil level only; remove lower leaves; copper or sulfur fungicide; remove infected foliage promptly

Uses

🍳

Fresh eating and salads

Culinary

Nantucket tomatoes offer excellent flavor suitable for fresh slicing, salads, and sandwiches. Their medium size and disease resistance make them reliable for home gardeners seeking quality table tomatoes. [source]

🍳

Sauce and preservation

Culinary

The determinate growth habit produces fruit that ripens in concentrated flushes, making Nantucket excellent for processing into tomato sauce, paste, and canned preserves. [source]

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Antioxidant-rich food

Medicinal

Tomatoes contain lycopene and other polyphenols with potential cardiovascular and anti-inflammatory benefits. Fresh, ripe tomatoes provide maximum nutrient content. [source]

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Container gardening

Household

The compact, determinate growth habit makes Nantucket ideal for container growing on patios, decks, and balconies, bringing fresh tomatoes to small spaces. [source]

🦋

Pollinator attraction

Wildlife

Tomato flowers attract bees, butterflies, and other pollinators to the garden, supporting local ecosystems and improving fruit set through natural pollination. [source]

This is not medical advice. LizPlants is not a medical resource. Always consult a qualified healthcare professional before using plants medicinally.

Harvest Tips

Pick tomatoes when fully colored but still slightly firm; they will continue ripening off the vine. Twist gently or use pruners to avoid damaging the plant. For peak flavor, harvest in early morning or late afternoon. In cool climates, harvest mature green tomatoes before frost and ripen at room temperature (65-75°F) indoors. Determinate varieties like Nantucket tend to ripen their entire crop within a narrow window—ideal for canning or sauces.

Fun Facts

🌱 Nantucket was specifically bred at the University of Massachusetts to thrive in the cool, short-season climate of coastal New England, including the actual island of Nantucket—making it a regionally adapted variety rather than a universally available type.
🌱 Determinate tomatoes like Nantucket produce all their fruit in a concentrated period (2-3 weeks), making them perfect for preserving, canning, or making fresh sauce—unlike indeterminate varieties that produce fruit continuously until frost.
🌱 Tomatoes actually taste better when homegrown because modern commercial varieties are bred for shipping and shelf-life rather than flavor; heirloom and regional varieties like Nantucket prioritize taste over transportability.

Gardening Terms

New to gardening? Learn about terms used in this guide:

Full Sun Mulch Pollination Transplant True Leaves

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