Finding the perfect spot for your balcony planter boxes is crucial for a thriving urban garden. The "best" location isn't universal; it depends entirely on your balcony's orientation and the sunlight it receives. For most flowering plants and vegetables, you'll want to aim for the sunniest spot.
First, become a sunlight detective. Observe your balcony over a full day. Note where the direct sun hits and for how long. South-facing balconies (in the Northern Hemisphere) typically get the most intense, all-day sun, ideal for sun-loving tomatoes, peppers, and herbs. East-facing balconies receive gentle morning light, perfect for leafy greens and plants that prefer partial sun. West-facing balconies get strong afternoon heat, suitable for drought-tolerant herbs and some flowers. North-facing balconies receive the least direct light, limiting you to shade-tolerant plants like mint, lettuce, or certain ferns.
Prioritize placing your boxes along the balcony railing. This position minimizes shading from the building itself and allows plants to capture angled morning and afternoon light. Avoid corners tucked against walls, which often create shade. Be mindful of overhead structures like eaves or the balcony above, which can create significant shadow.
For flexibility, use rolling plant stands or casters under your boxes. This allows you to move plants to follow the sun's path across seasons or protect delicate greens from harsh afternoon rays. Remember, the optimal spot is where your specific plants get the light they need to flourish, turning your urban balcony into a productive and beautiful green retreat.