URBAN PLANTER BOXES

For a beginner city gardener, the most affordable urban planter box is usually a simple, UV-stabilized plastic rectangular planter with drainage holes—often 18 to 24 inches long and roughly $15–$35. It is light, cheap, easy to move on a balcony, and forgiving if you forget to water once. Avoid fancy self-watering systems, cedar, or metal troughs until you know your space and routine. Buy a food-safe plastic planter box, check that it has drainage holes, and add a saucer to protect your balcony. Fill it with lightweight potting mix, not garden soil, and start with lettuce, herbs, or cherry tomatoes. If your absolute priority is the lowest cost, fabric grow bags are even cheaper—often $8–$20—and work well for beginners, but they are flexible containers rather than a rigid planter box. Use them if you want maximum plants per dollar; choose the plastic planter box if you want a tidy, traditional urban look. For either option, put it where it gets 4–6 hours of sun, water when the top inch of soil feels dry, and don't overcrowd. Local garden centers, end-of-season sales, and online multipacks can cut costs further. In short: the cheapest true planter box for a beginner city gardener is a basic plastic box with drainage; the cheapest overall container is a fabric grow bag.