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Tomato Varieties: Type Casting

Tomatoes have two types of growth: determinate and indeterminate. Determinate plants stop growing at a certain size. They tend to set and produce all their fruit at once over a 2 to 3 week period. Often called bush tomatoes, they can be planted closer together and do well in a container.

An indeterminate plant will keep on growing and producing fruit until it is killed by frost. These plants get quite large and will need some kind of support. Whether you use a trellis, stakes, or cages is up to you, but supporting them is necessary to keep the plants from sprawling on the ground.

Tomato Plant Care: Pruning Tomatoes

To pinch or not to pinch, that is the big question. Most gardeners remove some of the suckers that form between the main stalk and the side branches during the early growth of their plants. But just how much should you prune them, if at all? Pruned plants bear earlier and have larger tomatoes,
but they also have fewer of them. Over pruning can cause sunscald—a yellow sunburned patch that eventually blisters. Unpruned plants yield about twice as much fruit as pruned ones do, but it will take longer for the fruit to ripen. You definitely do not want to prune determinate varieties or you will have only three fruit clusters. Since determinates bear fruit only on the ends of their branches, never clip them off or you won’t get any fruit at all!

Pruning also affects flavor. The more foliage a plant has, the more photosynthesis is taking place, which produces more sugars in the fruit. The excess foliage shades the fruit and insulates it from summer heat making it ripen more slowly and improving the taste. Of course, if the foliage on your plants is so thick that no fresh air can reach the center of the plant, then by all means, pinch off a few suckers. If your indeterminates are reaching for the stars, you can top them above the highest blossoms to keep them in bounds and encourage green fruit to ripen.
Tomato Plant Care: How Much to Water

Tomato plants need 1 to 2 inches of water per week. Uneven watering can set the stage for blossom end rot and may also cause fruits to crack open. Stressed plants remove calcium from the fruit and send it to the shoots to keep the plant growing. Along with uneven moisture, excessive nitrogen and high soil acidity contribute to blossom end rot.
Tomato Plant Care: Feeding

Most gardeners have a secret or two up their sleeves. One man I know treats his plants to crushed eggshells in the planting hole, another uses a handful of bonemeal, and someone else swears by a pinch of Epsom salts. If you must fertilize, side-dress the plants with compost or a dose of liquid seaweed or fish emulsion. Stay away from high nitrogen fertilizers unless your plants have yellow leaves. Too much nitrogen will cause lush growth but give you little or no fruit. If the leaves on your plant are purple, they are calling for more phosphorus. This is the most important nutrient for fruit production.

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