If you have tomato transplants when autumn is almost here, then your choices may depend on your climate. In colder climates, it might be best to bring the tomatoes indoors, if you can set them up in an area where the temperature is warm (daytime between 65 and 85F; nighttime cooler, but not below 55F), and there is lots of sunlight (between 12 and 16 hours; a south-facing window with supplemental grow lights might work). Plant them in 5-gallon containers or larger. Fertilize (after first 2 weeks) and water regularly. If you have indeterminate tomatoes, you’ll need to provide support, as they tend to sprawl; these are best, however, for growing over winter, as they will provide a crop over a longer period than determinates. When flowers form, be sure to tap the branches, to encourage pollen to distribute to other flowers. If you do not have room indoors, you can try to extend the season by placing the tomatoes in plastic tunnels or another season-extension system.
If you have tomato transplants when autumn is almost here, then your choices may depend on your climate. In colder climates, it might be best to bring the tomatoes indoors, if you can set them up in an area where the temperature is warm (daytime between 65 and 85F; nighttime cooler, but not below 55F), and there is lots of sunlight (between 12 and 16 hours; a south-facing window with supplemental grow lights might work). Plant them in 5-gallon containers or larger. Fertilize (after first 2 weeks) and water regularly. If you have indeterminate tomatoes, you’ll need to provide support, as they tend to sprawl; these are best, however, for growing over winter, as they will provide a crop over a longer period than determinates. When flowers form, be sure to tap the branches, to encourage pollen to distribute to other flowers. If you do not have room indoors, you can try to extend the season by placing the tomatoes in plastic tunnels or another season-extension system.