

A CRI of 0 means all colors will appear black.

How much light a bulb or fixture provides depends on its intensity. Opting for a slightly warmer color temperature will give your space a cozy glow.

The unit Kelvin (K) measures the color temperature of individual bulbs–in other words, will the light emitted appear warm or cool? This becomes important when your grow lights also illuminate your living space. Some grow lights allow you to adjust the balance of color from warm (more red light) to cool (more blue light), depending on your plant’s needs. Green light helps maximize photosynthesis.Ī standard, full-spectrum grow light will support most plant growth.Red light regulates plant growth and helps plants produce flowers and fruit.It also helps encourage germination and root development in young plants and seedlings. Blue light helps plants produce chlorophyll, the pigment they need to grow.Contained within that spectrum are some colors especially helpful to indoor plants. This is known as a ‘full spectrum’ light. Although standard grow lights appear clear or white to the naked eye, they actually consist of multiple colors emitted in varying degrees. Most plants need a spectrum of color to thrive. To better understand the differences in grow lights on the market today, consider the following categories. Grow lights give plants the energy they need to convert light into food, but not all grow lights are the same.
