This is a great idea I use containers as I have limited mobility and now have to do no lifting because osteoarthritis has my arms and won't let go. I do put the holes in the side of the containers about an inch above the bottom which makes me water less as it stays moist longer in South Ga. heat. I also put sphagnum moss in the bottom or mixed with the first 3 inches of the soil to hold moisture. We harvest the fresh moss from the woods each year.