How to Grow Bell Pepper 'Rainbow Bell'
Capsicum annuum 'Rainbow Bell'
Capsicum annuum 'Rainbow Bell' is a vibrant warm-season pepper offering colorful fruit and mild heat. Gardeners prize this easy-to-grow variety for its reliable production of sweet peppers that thrive in sunny gardens or containers throughout the summer months.
📷 Wikipedia: Capsicum annuumStarting Bell Pepper 'Rainbow Bell': indoors or direct sow?
🌾 Sow directly in the garden — Bell Pepper 'Rainbow Bell' is not usually started indoors.
Do not start indoors before the last frost; plant seedlings directly outdoors only after soil is warm and all frost danger has passed.
Soil, care & harvest
Prepare loose, fertile soil with a pH between 6.0 and 7.0 to ensure optimal growth. Since this is a warm-season crop, start seeds indoors only after all danger of frost has passed when soil temperatures are consistently warm. Sow seeds about 1/4 inch deep; they typically germinate within 7 to 21 days under proper warmth and moisture conditions.
Space plants 18 to 24 inches apart in full sun, ensuring consistent moisture of 1 to 1.5 inches weekly. Stake tall varieties if needed for support. Apply a layer of mulch around the base to retain soil moisture and suppress weeds. Feed regularly with a balanced fertilizer to maintain vigorous growth and fruit production.
Watch for aphids, spider mites, pepper weevils, and cutworms; inspect leaves frequently and use organic controls as needed. Prevent bacterial leaf spot, powdery mildew, verticillium wilt, and blossom end rot by practicing crop rotation and avoiding overhead watering. Harvest fruit 70 to 80 days after planting when colors become bright and glossy.
When to Plant Bell Pepper 'Rainbow Bell'
Planting windows vary by USDA hardiness zone. Look up yours by ZIP code.
| Zone | Start Indoors | Direct Sow | Harvest |
|---|---|---|---|
| Zone 1 | May | — | October – August |
| Zone 2 | April – May | — | September |
| Zone 3 | April | — | September – October |
| Zone 4 | March – April | — | August – October |
| Zone 5 | March | — | August – October |
| Zone 6 | March | — | August – October |
| Zone 7 | February – March | — | July – September |
| Zone 8 | February | — | July – September |
| Zone 9 | January | — | June – August |
| Zone 10 | January | — | May – July |
| Zone 11 | January | — | April – June |
| Zone 12 | January | — | April – June |
| Zone 13 | January | — | April – June |
Companion Plants for Bell Pepper 'Rainbow Bell'
✓ Good companions
Repels aphids, spider mites, and thrips while potentially improving pepper flavor
Loose soil from carrot growth improves drainage, and carrots don't compete for nutrients
Repels aphids and may help improve pepper growth and disease resistance
Deters nematodes, aphids, and whiteflies with natural pest-repelling compounds
Acts as trap crop for aphids and cucumber beetles while attracting predatory insects
Repels cucumber beetles and provides ground cover to retain soil moisture
Attracts beneficial insects like hoverflies and parasitic wasps that control aphids
Similar growing requirements and can share support structures, though keep adequate spacing
✗ Keep away from
Produces juglone toxin that causes wilting and death in peppers and other nightshades
Heavy feeders that compete for nutrients and may stunt pepper growth and fruit production
Allelopathic properties inhibit growth of peppers and most other garden vegetables
Nutrition Facts
Per 100g serving (USDA FoodData Central)
