Giant tomato plants grow best when you use a trellis or tomato cage to help the tomato plants support their weight, and you can either purchase these structu… Video Rating: 3 / 5 Question by Taren: How to take care of tomato plants winter time? My earlier question didn’t get posted! I’ll ask again. My tomato plants in the kitchen are turning yellowish and saggy,, is it because of the colder weather and lesser daylight? (they are by the window) Or is it something else, like they need something, extra water, lesser water, more nutrition… Read Article →