Have you ever given much thought to the vegetable seeds you plant? Why do you plant them? Taste? Production? Disease resistance? Recommended from a friend? Many people plant the same cultivars each year and never think of planting anything else. The Extension System has taught many tomato workshops over the years and have a tomato taste test as part of the program. Many gardeners bring in some of their favorite tomatoes. We assign the tomato a number, then slice it up for tasting. Participants eat the tomatoes, not even knowing which one they brought. It is very interesting to see the participants who have grown a particular tomato for years because they thought it was the best, only to actually like several others that they have never grown. There are actually thousands of different tomato cultivars to choose from, and I do not know if someone would ever eat fruit from all of them but they can certainly have fun trying.
One question is where would someone find different tomato cultivars? Nurseries and farm supply stores have many cultivars ready for transplanting, and growing your own transplants is an option as well. Seed starting can be fun, and this opens the door to thousands of cultivars. The Extension System can help you if you have questions about growing transplants.
Tomato plants get several diseases that lower production, and cultivar selection could help decrease some of those diseases. Some of the common problems you can find resistance to include fusarium wilt and nematodes. However, resistance to verticillium wilt, alternaria stem canker, bacterial speck, gray leaf spot, tobacco mosaic wilt virus, and others are available. Tomato spotted wilt virus is common, and cultivars such as Bella Rosa, Amelia, BHN 640, Christa, Primo Red, and others are resistant. Growers can even find heat set tomatoes. Many tomatoes do not set fruit well with temperatures in the 90’s. While tomatoes do not perform well with high temperatures, the heat set tomatoes do better than others. Some of the heat set tomato cultivars include Phoenix, Red Bounty, Redline, Solar Fire, and others. Some tomatoes are more suitable for greenhouse production or high tunnel production than others, and choosing the right cultivar for those locations is very important.
Just check the tags where you purchase plants or seeds, and it will list the plant resistance. Tomatoes are not the only crop in which you can find disease resistant cultivars. If you have questions about disease resistance, seed starting, or most anything else, just call your local Extension office for additional information.
by Dr. Chip East, Regional Extension Agent for Commercial Horticulture