By Scout Nelson
Tom Kalb, horticulturist with NDSU Extension, highlights major advancements in tomato breeding that are expected to change tomato production across the Dakotas in 2026. Scientists have cracked the genetic code of tomatoes, that offer improved color, flavor, yield, and disease resistance, making gardening more rewarding and productive.
Researchers have identified important tomato genes that help improve plant performance. Using natural breeding methods, not genetic modification, these genes are combined to create stronger and healthier varieties. One breakthrough is the development of tomatoes that resist Septoria leaf spots, one of the most common tomato diseases in the Dakotas. This disease causes leaf spotting and browning late in the season and often reduces yields. New resistant varieties help vines remain healthy until frost.
A key example is a new cherry tomato variety that carries Septoria resistance. While its seeds are currently rare and costly, the gene can now be bred into future varieties. Similar progress over the past decade has already led tomatoes that resist early blight and late blight.
Another advancement includes the Plus tomato varieties. Popular tomatoes now offer improved versions with better fruit quality and stronger disease resistance. These varieties keep the traits gardeners enjoy while improving performance in the field.
Tomatoes developed in the Blue Ridge Mountains also show promise. These varieties perform well in cooler summers and resist common diseases. Several have excelled in trials, including new beefsteak types known for balanced sweetness and acidity. Many of these plants are determined, meaning they stay compact, require less pruning, and produce fruit earlier.
Breeders are also improving heirloom tomatoes. While heirlooms are loved for flavor, they often lack disease resistance. New hybrid heirlooms combine classic taste with stronger, more productive plants. These hybrids ripen earlier, resist cracking, and fight disease.
Cherry tomatoes continue to evolve as well. New varieties offer larger fruit, fewer cracks, and unique colors that are ideal for snacking.
Many of these tomatoes are not widely available in garden centers yet and may need to be ordered online. Seeds should be started indoors from late March to early April. Gardeners are encouraged to explore trial results and recommended varieties through NDSU Extension resources as tomato production enters an exciting new era.
For more information about gardening, contact your, local NDSU Extension agent.
Photo Credit: gettyimages-valentinrussanov
Categories: North Dakota, Crops, Fruits and Vegetables