When to Plant Jalapeño Pepper in Tucson, Arizona (85708)
Location
Tucson, Arizona
ZIP Code
85708
USDA Zone
9b
Last Frost
Wednesday, February 10, 2027
📅 Planting Calendar
Start Seeds Indoors Wednesday, December 2, 2026
Transplant Outdoors Wednesday, February 24, 2027
Pro Tip: Start Jalapeño Pepper seeds indoors 10 weeks before your last frost date for best results.
🌿 Plant Details
Scientific Name Capsicum annuum
Days to Maturity 75 days
Mature Height 24-36"
Spread 18"
Type Bush
Fruit Size Small (2-3 inches)
☀️ Growing Requirements
☀️
Sun
Full Sun (6-8 hours)
💧
Water
Moderate
↔️
Spacing
18" apart
🌱
Planting Depth
0.25" deep
Seeds typically germinate in 7-14 days
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Growing Jalapeño Pepper in Zone 9b
Jalapeño Pepper (Capsicum annuum) is a popular garden vegetable. In Tucson, Arizona, which is in USDA Hardiness Zone 9b, you should start seeds indoors around Wednesday, December 2, 2026.
Your average last frost date is Wednesday, February 10, 2027. Plan to transplant your Jalapeño Pepper seedlings outdoors around Wednesday, February 24, 2027, about 2 weeks after your last frost date.