I have had these grow bags in the garden greenhouse for about 8 years. They are much better than the standard plastic tomato grow bags – much deeper and very environment-friendly. I just add some fresh compost at the end of the growing year and on it continues. I couldn’t remember where I got them from so I just randomly put a name of a seed company in and – bingo! Found them and ordered some more. Marshalls seed company has them. All I have to do now is wait. The growing rings I have bought years ago at a garden show and they work very well, they sit in the soil and have a ring around the main part, a water reservoir so the water goes directly to the roots.