I have gardened for a number of years. I tried veggies in New Mexico and I failed miserably. You see in NM, there is no soil, simply volcanic remains.
In California I have 8 foot tomato plants that are beginning to produce. I have harvested a couple of big ol squash, onions and divine garlic. Whoo, there is no bush in that garden except tomato bushes.
And that, my friends, is the moral of the story, bush is only good for tomatoes.