What Are the Sunlight Requirements for Periwinkles?
Periwinkles, native to Europe, North Africa, and West Asia, thrives in bright to moderate ambient light. Optimal conditions involve partial sun to dappled shade, with direct morning light and protection from harsh afternoon rays being ideal. This lighting balance is crucial for successful photosynthesis, robust growth, and abundant flowering. Inside, a south-facing window with filtered light suits periwinkles, while outdoors, morning sun with afternoon shade is advantageous. In greenhouses, shade cloths can help simulate preferred conditions. Adequate light is vital for preventing legginess and ensuring the vibrant color of blooms.