When to Plant Capsicum (Bell Pepper) in Canberra — Cold / Highland Guide
Photo: Wikimedia Commons
Capsicums are warm-season Solanaceae closely related to chillies, tomatoes and eggplant. They need a long, warm growing season to produce well. The coloured varieties (red, yellow, orange) are simply mature green capsicums left on the plant longer. A staple of Australian home gardens in warm and temperate zones.
Current Growing Conditions
Soil temperature: 18.9°C (optimal range: 18–35°C) ✓ Ready to plant
How to Grow Capsicum (Bell Pepper) in Cold / Highland Australia
When to Plant
Greenhouse or polytunnel essentially required for reliable production. Outdoor growing is marginal. Sow indoors August, transplant into protected structure November-December.
- Soil
- Rich, well-drained soil with generous compost. Slightly acidic preferred.
- pH Range
- 6.0-6.8
- Sunlight
- Full sun (minimum 6-8 hours). Fruit colour development requires good light.
- Spacing
- 45cm apart, 60cm between rows
- Watering
- Consistent, even moisture is critical. Irregular watering causes blossom end rot and fruit cracking. Deep water 2-3 times per week. Drip irrigation ideal. Avoid wetting foliage.
Companion plants: Basil, Carrot, Marigold, Parsley, Oregano
Avoid planting near: Fennel, Brassicas, Other Solanaceae (same bed rotation issues)
Cold / Highland Growing Tips for Capsicum (Bell Pepper)
Recommended Varieties
- Sweet Banana (fastest maturing)
- Mini capsicums
Key Challenges
- Insufficient heat units outdoors
- Frost risk at both ends of season
- Very slow fruit development
Pro Tips
- A greenhouse or polytunnel is the only reliable way to grow capsicums in highland areas
- If growing outdoors, use every heat-trapping trick: north-facing wall, black mulch, cloche
- Focus on fast-maturing mini types
Harvesting Capsicum (Bell Pepper)
When ready: Green capsicums: full-sized, firm, glossy skin. Coloured capsicums: leave on plant 2-3 weeks past green stage until fully coloured (red, yellow, orange depending on variety). Coloured fruit is sweeter with higher vitamin C.
How to harvest: Cut with sharp secateurs leaving a short stem. Do not pull - this damages the plant. Harvest in morning when firm and cool.
Get the Full Interactive Guide
Open the interactive planting dashboard with real-time weather, all pest alerts, and garden tracking.
Join Garden Buddy for premium features: disease management, seed saving, preservation guides,.