How to Grow Arizona Sun
Wikimedia Commons
Arizona Sun
Capsicum annuum
vegetableArizona Sun is a heat-loving sweet bell pepper variety bred specifically for hot, arid climates. It produces large, blocky peppers that ripen from green to a vibrant orange-red color. This cultivar is prized for its exceptional heat tolerance and reliable yields in desert gardening conditions.
When should you plant Arizona Sun in your zone?
Get a personalized planting timeline — when to start seeds, transplant, and harvest — based on your USDA zone and local frost dates. Free to start.
Example Arizona Sun timeline · Pittsburgh, PA (Zone 6b)
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Plant Arizona Sun
Around Apr 17Near Pittsburgh's average last spring frost.
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Tend & protect
Late spring–summerWatering, feeding, and pest-watch reminders.
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Harvest Arizona Sun
Around Jul 1≈ 75 days after planting
Sample dates for Pittsburgh, PA. Sign up to get exact Arizona Sun dates for your own zip code.
Growing Conditions
Soil
Growing Zones
Find your zone →Thrives in zones 9-11; can be grown in zones 8-9 with protection and heat reflection
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Seedling
6-8 weeksTiny seedlings with 2-4 leaves emerge. Plants are delicate and require consistent warmth (75-85°F) and moisture.
Keep soil consistently moist but not waterlogged. Provide 12-16 hours of light daily if growing indoors. Maintain warm temperatures. Begin hardening off after 6-8 weeks before transplanting.
Transplant/Establishment
2-3 weeks after transplantingPlants develop 4-6 true leaves and a stronger root system. Ready to transplant into garden after hardening off.
Space 18 inches apart. Plant deeply to strengthen root system. Water thoroughly after planting. Provide afternoon shade if temperatures exceed 95°F in first 2 weeks.
Vegetative Growth
4-6 weeksPlant develops robust foliage and branching structure. Height reaches 18-24 inches with full canopy. No flowers yet.
Maintain consistent watering and mulching. Provide balanced fertilizer every 2-3 weeks. Monitor for pests. Ensure full sun exposure. In extreme heat, ensure adequate water to prevent stress.
Flowering & Fruit Set
3-4 weeksSmall white flowers appear in leaf axils. Flowers transition to tiny green fruit after pollination. Peppers gradually enlarge.
Continue consistent watering and fertilizing. Reduce nitrogen, increase potassium and phosphorus to support fruiting. Ensure pollinator access or hand pollinate in extreme heat. Maintain steady temperatures.
Fruit Maturation & Harvest
3-5 weeks per fruit cyclePeppers enlarge to full size (3-4 inches) and transition from green to orange-red as they fully mature.
Maintain consistent watering to prevent blossom-end rot. Continue fertilizing. Harvest green peppers as needed, or allow to ripen fully for sweetness. In peak summer heat, ensure afternoon shade or reflective mulch to prevent sunscald.
Companion Planting
Plan your garden →Plant with:
Avoid planting near:
Common Pests
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Increase humidity with regular misting. Use neem oil or insecticidal soap. Strong water spray can dislodge mites. In severe cases, apply miticides.
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Spray with insecticidal soap or neem oil. Encourage natural predators like ladybugs. Use reflective mulch to deter. Hand-remove heavy infestations.
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Use sticky traps to monitor. Apply neem oil or spinosad. Remove affected flower buds. Maintain good air circulation.
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Use yellow sticky traps. Apply neem oil or horticultural oils. Spray undersides of leaves. Encourage parasitic wasps.
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Maintain consistent soil moisture and avoid drought stress. Ensure adequate calcium through lime or gypsum amendments. Mulch to regulate soil moisture.
Uses
Fresh eating and cooking
CulinaryArizona Sun peppers are sweet, crisp, and versatile. Enjoy them raw in salads and slaws, roasted, stuffed, grilled, or sautéed. The thick walls make them ideal for grilling and roasting. [source]
Preservation and canning
CulinaryThese peppers can be roasted and frozen, pickled, dried, or canned for long-term storage. Their large size and thick walls make them excellent for preserving. [source]
Heat-adapted desert gardening
HouseholdArizona Sun was specifically developed for hot, dry climates like the American Southwest. Growing it demonstrates successful adaptation to extreme heat and arid conditions. [source]
Vitamin C and antioxidants
MedicinalRed peppers are rich in vitamin C, beta-carotene, and antioxidants that support immune function and eye health. Arizona Sun peppers provide significant nutritional value, especially when fully ripened. [source]
Pollinator support
WildlifeThe flowers attract bees, butterflies, and other pollinators during the blooming season, supporting beneficial insect populations in the garden. [source]
This is not medical advice. LizPlants is not a medical resource. Always consult a qualified healthcare professional before using plants medicinally.
Harvest Tips
Arizona Sun peppers can be harvested at green stage (60-75 days) or allowed to ripen to full orange-red color (additional 2-3 weeks). Ripe peppers are sweeter and more nutritious. Use pruning shears or a knife to cut peppers from the plant to avoid damaging branches. Harvest regularly to encourage continued production. Peak harvest typically occurs in mid to late summer in desert climates.
Fun Facts
- 🌱 Arizona Sun was developed by the University of Arizona as part of a breeding program to create pepper varieties that thrive in desert heat and reflect the intense sunlight of the Southwest.
- 🌱 Unlike most peppers that slow production in extreme heat above 95°F, Arizona Sun maintains fruit set and growth even in blazing desert temperatures, making it uniquely adapted to climate change scenarios.
- 🌱 Sweet bell peppers contain more vitamin C when fully ripe (red stage) than at the green stage—Arizona Sun's vibrant orange-red color signals maximum nutritional content.
Gardening Terms
New to gardening? Learn about terms used in this guide:
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