Rose Colour Changes🌹 Why the same rose changes colour Factor Hot summer Cooler winter 🌡️ Temperature High temperature can make colour lighter/faded Cooler temperature often gives deeper/richer colour ☀️ Sunlight Very strong sunlight can bleach petals Moderate sunlight usually preserves colour better 🌙 Night temperature Warm nights reduce colour intensity in some varieties Cool nights can increase pigment development 💧 Water stress Heat + insufficient water → smaller/paler