I picked up some fertilizer today. Next weekend I’ll get the straw bales. I think I’m going to start with 4 for my first attempt at this. You can plant 2 tomato plants, 3 zucchini, 4-5 cucumber, and 4-5 pepper plants in each one. You can also plant in the sides. That’s where I’ll be planting the acorn squash, spaghetti squash, cantaloupe, and watermelon (if those seeds ever grow).