Phototropism is an important aspect that inspires plants to grow tall and slender or wide and short. the mixing of LEDs should be done wisely, taking information from spectrum curves. Why the red LED should outnumber blue LEDs is a question that may arise in the user's mind. the wavelength of the red LED is not very wide, so there should be more red LEDs than blue LEDs. The intensity of the lights has to be controlled for the plants to absorb the light. Many growers tend to make use of only one kind of LEDs. however, only one kind of LED may not be able to give the plants the full range of light spectrum that sunlight provides. To have a successful growth, it is important to create conditions which incorporate all the wavelengths of light.

• Blue lights: LED lights that are blue in color contribute to growth in vegetation like shoots or leaves. however, it has to be toned otherwise it does not prove to be very helpful.
• Red lights: Red LED lights help in flowering. They also add to the growth of the fruits in a plant. Uncontrolled red lights produce stunted plants and may affect the growth of the fruits.
• White lights: White LED lights enhance the visibility. They help in visualization of the inside of the grow room. It is important to monitor the growth of the plants and it is only possible under the white light. Other colors might make it difficult to monitor the room. In such cases it might become difficult to identify any issues with the environment as well as the plants. with the help of the white light it becames easier to observe even the smallest troubles with the plants.
• Ultraviolet light: Ultraviolet light is not very common but it can be an option for experimentation. It is important to mimic the outdoor conditions and creat artificial conditions so that plants get the right mixture and wavelengths of the light.