It's critical to know how many plants to add to your straw bale garden. As a general rule, just 2 of each kind of bigger plant should be placed in your straw bale. It's best to plant 2 of these plants in a straw bale if you're producing dwarf corn. Until the bale is full, you could plant two more bigger plant kinds. On the other hand, smaller plants can be added up to 5 of each smaller plant species per bale. In one straw bale, you may grow 5 pea or bean plants.