Tomatoes do well in temperatures of 55 degrees Fahrenheit or higher. When weather forecasts are cool, be sure to cover your plants or bring potted plants indoors.
Regular pruning of your tomato plant helps to produce larger and more abundant fruit. Between the central stalk and a main branch, you'll see smaller branches growing in a "V". These are "suckers". Nipping the suckers helps to control the size of your tomato and helps the plant to focus on producing strong, healthy fruit as well.
Tomatoes like their space! Keep garden tomato plants as weed free as possible.
To promote large fruits, keep your tomatoes well-watered. During hot, dry spells thoroughly water your plants once a week. Harvesting tomatoes is one of the easiest parts of growing tomatoes. To hasten ripening at harvest time, pinch stems back close to the fruit. Either let them ripen on the vine or pick them when they begin to shed their green color for their mature color (depending on variety, orange, yellow, red).
Yet, it's common to end up with at least a few green tomatoes at season's end. Green tomatoes that are showing a hint of orange or yellow will ripen quickly when placed in a brown paper bag with an apple or a pear or you can usually ripen tomatoes on a sunny windowsill if they show even a tinge of color change. Many recipes such as green tomato relishes, green tomato preserves, and fried green tomatoes also call for unripe tomatoes.
Although much of growing tomatoes depends on the cultivar you plant, there are some general tomato growing tips that are useful in nipping many tomato growing problems in the bud!