I have raised beds, 4 x 12 feet. One of them is devoted to tomatoes...4 plants evenly spaced down the center of the bed. I would like to use some of the space at the edges for carrots and parsnips. I can get food grade 5 gal buckets from a nearby resturant. I was thinking of putting the tomatoes in these to get them higher and doing a better job staking them so they don't sprawl all over the place. I was wondering if I drilled several 3 or 4 inch holes in the bottom of the buckets if that would allow the tomato roots to go deeper and maybe have a bigger, healthier plant. Any thoughts on that? Should I fill the buckets as if they are containers?