capsicum🫑
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Growing Capsicum: How to Plant, Feed, and Care for Productive Plants
Capsicum (Capsicum annuum) is a warm-season fruiting vegetable grown for its colourful, vitamin-rich pods. It’s known by many names—capsicum, bell pepper, sweet pepper—and is one of the most rewarding crops for Australian home gardeners. Capsicum plants thrive in full sun, need a long growing season, and benefit greatly from proper fertiliser application at each stage.
Botanical Structure & Growth Habits
- Leaves: Broad, glossy leaves arranged alternately, supporting photosynthesis during fruit development
- Flowers: Small white flowers form in leaf axils, each producing one fruit
- Fruits: Green when immature, turning red, yellow, orange, or purple when ripe
- Growth Cycle: Seed to harvest typically takes 14–18 weeks in warm weather
Popular Capsicum Varieties in Australia
- California Wonder: Classic red capsicum, sweet and crisp
- Yolo Wonder: Early red bell type, reliable for home gardens
- Golden Summer: Yellow fruit, milder taste, great for salads
- Mini Bells: Small-fruited, container-friendly plants with fast maturity
Capsicum plants prefer daytime temperatures between 20–28°C and night temperatures above 12°C. Too much cold will stunt growth, while extreme heat can cause flower drop.
How to Plant Capsicum: From Seed or Seedling
Starting from Seed
- Sow Indoors: 6–8 weeks before last frost, in trays or small pots
- Depth: 0.5–1 cm deep in warm, moist seed-raising mix
- Germination: 7–14 days at 22–28°C
- Transplant: When seedlings are 10–15 cm tall with 4+ true leaves
Planting in the Ground or Containers
- Spacing: 40–50 cm apart in rows 60 cm wide
- Pots: Minimum 30 cm wide and deep per plant
- Soil: Loose, rich loam or potting mix with pH 6.0–6.8
Best Time to Plant Capsicum in Australia
- Temperate zones: Sept–Nov (spring)
- Subtropical: Aug–Dec or Feb–March
- Tropical: Dry season only (May–Aug)
Capsicum thrives in warm weather. Transplant outdoors only after soil reaches 18°C and risk of frost is gone.
Best Fertiliser for Capsicum Plants: Stage-by-Stage Guide
1. Seedling to Early Vegetative (Weeks 1–4)
- Fertiliser: NPK 20-20-20 Liquid
- Rate: 5 mL per litre, applied every 7–10 days
- Why: Promotes balanced root and leaf growth during early development
2. Flowering & Fruiting (Weeks 5–12+)
- Fertiliser: NPK 4-18-38 + CaMg
- Rate: 5–6 g per 10 litres of water, applied weekly
- Why: High potassium improves fruit size, firmness, flavour, and disease resistance; calcium prevents blossom-end rot
3. Container Plants & Heavy Feeders
- Container-grown capsicum depletes nutrients faster—feed every 5–7 days
- Flush pots with plain water once a month to avoid salt buildup
Common Nutrient Deficiencies:
- Blossom-end rot: Caused by calcium deficiency or erratic watering
- Pale leaves & slow growth: Lack of nitrogen in early stages
- Flower drop or no fruit: Too much nitrogen during flowering; shift to high potassium feed
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