Intensive Culture & Season Extension
Warren Roberts
George Kuepper
Production Temperatures
Garlic, Leek, Onion
• Optimum
• Minimum
• Maximum
• 55-75
• 45
• 85
Production Temperatures
Beet, Broccoli, Brussels Sprouts, Cabbage,
Chard, Collards, Kale, Radish, Spinach, Turnip
• Optimum
• Minimum
• Maximum
• 60-65
• 40
• 75
Production Temperatures
Carrot, Cauliflower, Lettuce, Mustard, Peas,
Potato
• Optimum
• Minimum
• Maximum
• 60-65
• 45
• 75
Production Temperatures
Lima Beans, Snap Beans
• Optimum
• Minimum
• Maximum
• 60-70
• 50
• 80
Production Temperatures
Sweet Corn, Southern Pea
• Optimum
• Minimum
• Maximum
• 60-75
• 50
• 95
Production Temperatures
Pumpkin, Squash
• Optimum
• Minimum
• Maximum
• 65-75
• 50
• 90
Production Temperatures
Cucumber, Muskmelon
• Optimum
• Minimum
• Maximum
• 65-75
• 60
• 90
Production Temperatures
Sweet Pepper, Tomato
• Optimum
• Minimum
• Maximum
• 70-75
• 65
• 80
Production Temperatures
Eggplant, Hot Pepper, Okra, Sweet Potato,
Watermelon
• Optimum
• Minimum
• Maximum
• 70-85
• 65
• 95
Wister Average Temperatures
Season Extension
• Season extension refers to
anything that allows a crop to be
cultivated beyond its normal
outdoor growing season.
Average Growing Season
Wister Average Temperatures
Average Fall Freeze
Earliest Fall Freeze
Cold Season Extension
• Greenhouses
• Hoop Houses
• Cold Frames
• Row Covers
• Raised Beds
• Mulches
• Site Selection
Cold Weather Season Extension
Cold Weather Season Extension
Cloche
Multi-Purpose Structure
Wister Average Temperatures
Days Above 90
Days Above 100
Hot Weather Season Extension
• Shade Houses
• Floating Shade Covers
Hot Weather – Shade Cloth
Hot Weather Season Extension
• Mulches
• Mist Systems
Evaporative Mist Cooling
Average Wind Speed
Average Maximum Wind Speed
Average Maximum Gust Speed
Windbreaks
Hot Season Extension
• Site Selection
Row Arrangement
Combinations –
Epcot – Living with the Land

Intensive Culture & Season Extension