Red Oak Tree Seeds 5 Seeds Bonsai Variety Quercus rubra, Highly Jayme Garden Bonsai Driftwood Tree In Your Aquarium Fish Tank What and Why Micro Aquatic Shop Dirt Pot Flexible Portable Planter, Grey, 10 gal, with handles Five gallons is all most vegetables need to thrive. 1. Peppers: Prefer black containers. 2. Onions: Grow multiple in one bucket. 3. Tomatoes: Use deep pots for a juicy harvest. 4.