Tomato plants can look a tad weary in late summer. The stresses of quickly growing stems and leaves, developing and ripening fruit, and facing hot midsummer temperatures can take their toll on plants. There is still time left in the season, though, and you can encourage them to end on a high.
Growing tomatoes in late summer is more about gentle encouragement and preserving what you have got. You need to ensure the fruits you have develop healthily and ripen, and that is the priority rather than encouraging huge flushes of new growth.
