How Are the Thousands of Tomato Types Classified?
There are literally thousands of different tomato types out there and anyone who is new to the hobby of tomato gardening is sure to be confused as to what all of these classifications mean, and more importantly, which variety of tomato should they be planting? Fortunately, only a basic knowledge of the way tomatoes are classified is required to make an educated decision on a particular species that is right for you.
Determinate vs. Indeterminate
The first basic way tomato types are broken down is by the manner in which the plant grows. Determinate tomato plants are those that grow only to a specific height, and no higher. They are also known as bush tomato plants due to their appearance. Determinate tomato plants produce their crop of fruit during a short period of time, and then cease to produce any more tomatoes for the rest of the season. A good characteristic of these plants is that since they don't continue to grow to taller heights, they don't need to be supported by staking or caging. You can also get by skipping the pruning ritual too. Overall, the determinate tomato plant requires less maintenance by the gardener.
The indeterminate tomato plant, on the other hand, will continue to grow wildly and need to be supported by stakes or cages. One of the things many people prefer about the indeterminate is that it produces tomatoes all-season long. When you pick ripened tomatoes from this plant, you can be sure that it will continue to give you nice, delicious tomatoes throughout the rest of the growing season. These plants also commonly require more care and should be regularly pruned.
Heirloom vs. Hybrid
The next breakdown in tomato types is heirloom and hybrid. Everyone has surely heard of heirloom tomatoes, but most people don't know what it really means. To put it simply, it is a tomato variety that has been grown continually for 50 or more years, and has not been cross-pollinated or mixed with any other tomato species. The seeds are saved from the tomatoes and planted season after season to preserve the tomato's desirable properties. They are known to be the tastiest tomatoes around, and every tomato gardener longs to have a garden full of delicious heirlooms. Unfortunately, heirloom tomatoes are more susceptible to problems, such as fungal diseases and insect infestations. They usually don't produce as bountiful of a crop as hybrids do either.
That brings us to the alternative to the heirloom, which is known as a hybrid tomato. These tomatoes have been "engineered" to contain many of the best qualities of several different species of tomato by cross-breeding them together. They have been bred this way to be more disease resistant, less vulnerable to pests such as nematodes, and to produce a more reliable crop of the fruit. Hybrids were first designed by commercial growers, and are most likely to be the type you buy in the grocery store. I don't' have to tell you what you already know, store-bought tomatoes don't taste near as good as a home-grown heirloom. That's the negative of hybrids, but there are quite a few that have been developed that are quite flavorful, and you can try planting several to see which ones you like the best.
There are lots of factors that may influence which tomato types you ultimately decide to plant. Things to consider are your experience in gardening, how much time you have to tend to your tomatoes, and your priorities in the fruit that is grown. Some people want tomatoes all summer long for sandwiches and salads, and some like to jar all of their tomatoes for sauces and winter consumption. You should consider these and many other priorities when deciding on a type of tomato, but nobody says you can't plant 4 or 5 different types and enjoy them all!