- Hardiness Zone: 4-11 Annual
- Hardiness Zone: 10-11 Tender Perennial
- Scoville Heat Units: 0 SHU
Seed Depth: 1/4 inch
Seed Spacing: 18–24 inches
Row Spacing: 24–36 inches
Sunlight: Full sun
Days to Sprout: 7–14 days
Days to Maturity: 70–75 days
Growth Habit: Upright, bushy annual
Sunlight: Requires full sun, with at least 6–8 hours of direct sunlight daily for optimal growth.
Soil Type: Prefers well-drained, fertile soil with a pH of 6.0–6.8. Enrich soil with compost or organic matter before planting.
When to Plant: Start seeds indoors 8–10 weeks before the last frost. Transplant outdoors once the danger of frost has passed and soil temperatures reach at least 65°F.
Direct Sowing: Not recommended; peppers grow best when started indoors.
Indoor Sowing: Plant seeds in trays 1/4 inch deep. Transplant seedlings outdoors when they are 4–6 inches tall and nighttime temperatures are above 50°F.
Succession Planting: Stagger plantings for a continuous harvest throughout the growing season.
Watering: Water deeply and consistently, keeping the soil evenly moist but not waterlogged. Mulch around plants to retain soil moisture.
Fertilizing: Apply a balanced fertilizer or compost at planting and during flowering and fruiting stages. Avoid excessive nitrogen, which promotes foliage over fruit production.
Pruning: Remove any yellowing leaves and thin overcrowded foliage to improve airflow and light penetration.
Pest and Disease Control: Monitor for aphids, whiteflies, and blossom-end rot. Use organic pest treatments and ensure consistent watering to prevent issues.
When to Harvest: Harvest when peppers are firm, glossy, and fully green, typically 70–75 days after transplanting. Peppers will turn red if left to ripen further on the plant.
How to Harvest: Use scissors or pruning shears to cut peppers from the plant, leaving a short stem attached. Handle carefully to avoid bruising.
Seed Collection: Allow peppers to fully ripen and turn red on the plant before collecting seeds. Remove seeds and dry thoroughly.
Storing Seeds: Store seeds in an airtight container in a cool, dry place.
Why You’ll Love It
Cal Wonder 300 TMR is a trusted heirloom bell pepper known for its consistent production, disease resistance, and sweet, crunchy fruit. This variety produces large, blocky green peppers that ripen to a bright red if left on the plant. The “TMR” stands for Tobacco Mosaic Resistant, making it a smart choice for home gardeners looking for reliability in hot or humid conditions. Excellent for fresh eating, stuffing, or slicing into salads and stir-fries.
Plant Characteristics
Height: 18–24 inches
Growth Habit: Compact and upright with heavy fruit set
Fruit Type: Blocky, 4-lobed green bell peppers, ripening red
Days to Maturity: 75–80 days
Hardiness: Warm-season annual
Flavor and Culinary Uses
Flavor: Mild, sweet, and crisp with thick flesh
Culinary Uses: Perfect for fresh eating, salads, stuffing, sautéing, grilling, and roasting. Delicious green or fully ripened red.
Companion Planting Tips
Good Companions: Tomatoes, basil, onions, and carrots
Avoid Planting Near: Fennel or other plants that may compete for nutrients
Bonus Benefit: Naturally resistant to Tobacco Mosaic Virus — a dependable choice for home gardens
Common Issues and Solutions
Blossom Drop or Poor Fruit Set: Avoid extreme temperature swings and water evenly
Sunscald: Provide light shade during the hottest part of summer to protect fruit
Pest Pressure: Use insecticidal soap or neem oil to manage aphids and beetles
Seeds Per Packet
500mg | Approximately 70 |
1g | Approximately 140 |
3g | Approximately 420 |
5g | Approximately 700 |
Why You’ll Love It
Cal Wonder 300 TMR is a trusted heirloom bell pepper known for its consistent production, disease resistance, and sweet, crunchy fruit. This variety produces large, blocky green peppers that ripen to a bright red if left on the plant. The “TMR” stands for Tobacco Mosaic Resistant, making it a smart choice for home gardeners looking for reliability in hot or humid conditions. Excellent for fresh eating, stuffing, or slicing into salads and stir-fries.
Plant Characteristics
Height: 18–24 inches
Growth Habit: Compact and upright with heavy fruit set
Fruit Type: Blocky, 4-lobed green bell peppers, ripening red
Days to Maturity: 75–80 days
Hardiness: Warm-season annual
Flavor and Culinary Uses
Flavor: Mild, sweet, and crisp with thick flesh
Culinary Uses: Perfect for fresh eating, salads, stuffing, sautéing, grilling, and roasting. Delicious green or fully ripened red.
Companion Planting Tips
Good Companions: Tomatoes, basil, onions, and carrots
Avoid Planting Near: Fennel or other plants that may compete for nutrients
Bonus Benefit: Naturally resistant to Tobacco Mosaic Virus — a dependable choice for home gardens
Common Issues and Solutions
Blossom Drop or Poor Fruit Set: Avoid extreme temperature swings and water evenly
Sunscald: Provide light shade during the hottest part of summer to protect fruit
Pest Pressure: Use insecticidal soap or neem oil to manage aphids and beetles
Seeds Per Packet
500mg | Approximately 70 |
1g | Approximately 140 |
3g | Approximately 420 |
5g | Approximately 700 |
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