Kansas gardeners still have nearly three months before planting tomato plants, but Kansas State University horticulture expert Cynthia Domenghini says now is a great time to prepare for a successful season.
Most home garden varieties are indeterminate tomatoes, which grow vines over five feet tall and produce fruit throughout the season, barring frost or disease. Determinate varieties, which are more compact and produce fruit in a shorter period, can also provide a plentiful harvest.
Domenghini recommends growing both types to enjoy fresh tomatoes and have a large supply for canning. She also suggests selecting disease-resistant varieties for a better yield.
Tomatoes in Kansas are typically planted in early to mid-May when temperatures rise above 70°F and frost has passed. However, in areas like northwest Kansas, planting may not occur until later in May.
Though indeterminate varieties yield fruit all season, hot Kansas summers can cause a dry spell in production, as tomatoes are less likely to set fruit during nights above 75°F and days above 95°F, especially with dry winds.
Domenghini and her team provide gardening tips through the weekly Horticulture Newsletter, which can be subscribed to by contacting hortsupport@ksu.edu or visiting the local K-State Research and Extension office.