Gardeners select "early" tomato cultivars for a short growing season and a quick harvest. Northern gardeners select these short season tomato varieties to ensure a harvest before an early freeze in fall. A few fast growing varieties are suitable for southern gardeners who want to grow a second crop for a fall harvest. Determinate tomato varieties stop producing tomatoes earlier in the growing season than indeterminate varieties. Indeterminate varieties continue to produce fruit until the first freeze.
Harvest early girl tomatoes 52 days after planting. Early girl, a slicing tomato, produces medium size fruit, 113gr to 170gr. An indeterminate variety, early girl grows as tall as 8 feet. Stake the plants to prevent breakage. Grow early girl tomatoes in any USDA plant hardiness zone after the last frost when the soil temperature is at least 12.8 degrees Celsius. Black plastic mulch raises soil temperatures for earlier planting times.
Glacier produces 2- to 85.1gr red tomatoes 58 days after planting. A determinate variety, glacier grows to 2 1/2 feet tall and does not require staking. Grow glacier tomatoes in any USDA plant hardiness zone after the last frost when the soil temperature is at least 12.8 degrees Celsius. Cover glacier tomato plants with floating row covers, a lightweight landscape fabric, if a late cold spell threatens in spring.
Stupice produces its first fruit in as little as 60 days. An indeterminate variety, stupice grows as tall as 6 feet and produces oval, 2-inch salad tomatoes all season long. Stake the plants to prevent breakage. Stupice grows especially well in cool summers, climates when day temperatures are between 18.3 degrees C and 26.7 degrees C, such as USDA plant hardiness zones 5 and cooler. Stupice will not set flower if nighttime temperatures drop below 12.8 degrees Celsius. Stupice is an open-pollinated tomato seed variety; seeds saved from the fruit will grow true to type.
Oregon spring produces fruit in as few as 55 days. This variety is especially cold tolerant and will even withstand light frosts without protection. Oregon spring sets fruit in temperatures as low as 10 degrees Celsius. A determinate variety, Oregon spring grows to 36 inches tall and does not usually require staking. It grows best in cool climates where summer temperatures range between 65 degrees and 29.4 degrees Celsius, such as USDA plant hardiness zones 7 through 5. Oregon spring produces 4- to 170gr, pink-to-red fruit.