I plant tomatoes around a buried five gallon bucket with holes around the bottom .For deep root watering.I usally put five plants around one bucket and in the heat of summer only water ever three days. I usally plant 35 tomatoe plants and last year was a bad year and still produced close to 300 lbs . Put a lid on the bucket and drill a few holes for over flow. Drill a 1"1/2 in the middle to stick a piece of 1"1'4 pvc that is about 5' long to water thru. I use 6"x6" concrete wire for a cage that is cut 10' long .That will make 3' wide cage. I plant the buckets 6' apart. So my tomatoes take up a space that is 3' wide x 42' long. And most years my plants are close to 6' to 8' tall come frost.