Wondering if your urban planter boxes get enough sun? It's a common concern for city gardeners. The key is to move beyond guesswork and measure accurately. Start by observing your space over several full days. Track direct sunlight hours in the morning, midday, and afternoon. Note that light intensity differs—the harsh midday sun counts more than the weak morning rays.
Use simple tools: a watch and a notebook, or even your smartphone's camera to note shadows. For precision, consider a inexpensive sunlight calculator or a photographer's light meter app. Remember, "full sun" means at least 6-8 hours of direct, unfiltered light. "Partial sun/partial shade" typically requires 3-6 hours, often with protection from intense afternoon heat. "Full shade" plants still need bright, indirect light for about 3 hours.
Factors like white walls (reflecting light), tall buildings (casting long shadows), and seasonal sun angle changes significantly impact exposure. A spot perfect in summer might be shaded in spring. Match your findings to your plants' known needs. If sunlight is insufficient, consider switching to shade-tolerant herbs like mint or leafy greens like spinach, or use reflective materials to maximize available light. Regular monitoring ensures your container garden thrives in its unique urban microclimate.