Tomato
Solanum lycopersicum
Tomatoes are one of the most rewarding warm-season crops for coastal subtropical gardens. Strong sunlight, fertile soil, steady moisture and good airflow are the foundations of healthy growth and reliable harvests.
Overview
At a Glance
Peak Planting Window
September to April
Seasonal Role
Warm-season staple crop
Difficulty
Moderate
Planting Method
Seedling preferred
First Harvest
10–14 weeks
Sun
Full sun
Water
Moderate
Heat Tolerance
High
Humidity Tolerance
Moderate (good airflow recommended)
Family
Solanaceae
Category
Vegetable
Planting Calendar
Monthly Planting Guide
Month-by-month suitability for coastal subtropical Australia.
Rationale
Why This Planting Window
Tomatoes perform best when planted into warm soil during spring, summer and early autumn. In coastal subtropical conditions, avoiding the coldest winter months supports faster establishment, stronger flowering and more reliable fruit production.
Reference
Growing Information
Lifecycle
Annual
Ideal Soil Temperature
18–30°C
Germination
5–10 days
Transplant Ready
4–6 weeks
Soil
Fertile, well-drained soil enriched with compost and organic matter
Soil pH
6.0–6.8
Plant Spacing
50–70 cm
Row Spacing
80–100 cm
Frost Tolerance
Low
In the garden
Plant Care
Feeding
Prepare the soil with compost before planting and use a balanced fertiliser during establishment. Once flowering begins, avoid excessive nitrogen and favour feeding that supports fruit development.
Watering Guidance
Water deeply and consistently at the base of the plant. Avoid irregular watering, which can contribute to fruit splitting and blossom-end rot, and minimise wetting the foliage in humid weather.
Avoid Nearby
- Potatoes and other tomatoes where possible, as they share several pests and diseases.
Watch out for
Problems & Prevention
Common Pests
Fruit fly, tomato hornworm, aphids, whitefly and mites.
Common Diseases
Early blight, bacterial wilt, leaf spot, powdery mildew and root rot.
Common Mistakes
Planting during the coldest months, inconsistent watering, overcrowding plants, excessive nitrogen feeding and poor airflow.
Picking
Harvest
First Harvest
10–14 weeks
Harvest Window
Harvest regularly once fruit reaches full colour and firmness for the variety
Harvest Indicators
Harvest when fruit has developed its mature colour, feels firm but not hard, and releases easily from the plant. Pick regularly to encourage continued production.
Standard
SGGS Details
Subtropical Gardener Growing Standard — profile metadata.
- SGGS Code
- VEG001
- Version
- 1
- Confidence
- High
- Seasonal Role
- Warm-season staple crop
- Crop Champion Month
- October
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