What colors of light do plants need in order to gather energy from sunlight?

Plants primarily utilize blue (around 400-500 nm) and red (around 600-700 nm) wavelengths of light for photosynthesis. Blue light promotes vegetative growth and is crucial for chlorophyll production, while red light is essential for flowering and fruiting. Green light is mostly reflected, which is why plants appear green, and they use it less efficiently for energy capture. Overall, blue and red light are the most effective for energy absorption in plants.