High Intensity Discharge Lights are the most efficient lighting made for plant growth. They are used for supplemental lighting in greenhouses during low-light or short light conditions as well as for indoor gardens.
There are two types used:
Metal Halide. These produce light in a blue-white light spectrum and are good for vegetative growth, non-flowering plants, seedlings, and cuttings.
High Pressure Sodium. These lights produce light in an orange-red spectrum and are used for flowering plants.
They induce about 30% more flowers than halide.
High Intensity Discharge Lights are the most efficient lighting made for plant growth. They are used for supplemental lighting in greenhouses during low-light or short light conditions as well as for indoor gardens.
There are two types used:
Metal Halide. These produce light in a blue-white light spectrum and are good for vegetative growth, non-flowering plants, seedlings, and cuttings.
High Pressure Sodium. These lights produce light in an orange-red spectrum and are used for flowering plants.
They induce about 30% more flowers than halide.