Color Spectrum

Last updated: January 28, 2019

What Does Color Spectrum Mean?

In gardening, the color spectrum refers to the cluster of colors emitted by a grow light source. This band of colors is normally measured in NM. These lights are mainly used in indoor gardens to encourage proper plant growth and development. The intensity, length and type of the color spectrum have a significant influence on the general plant health.


Maximum Yield Explains Color Spectrum

Without an adequate light spectrum, plants tend to sport overly-elongated stems. This is because the plants are stretching up to find an additional light source. Without a proper growth light, plants often suffer from stunted growth and development. Consequently, the right color spectrum is crucial for the plant’s health.

Some regular grow lights use florescent bulbs that are either warm or cool white. Warm white bulbs have a pronounced reddish tint while cool white offers a blueish tint. LED growth lights, on the other hand, have a higher relative intensity with a bluer hue. For a healthier yield, LED lights should contain some UV and IR LEDs, White LEDs, Far-Red LEDs (700-800nm), Green LEDs (500-600nm), Blue LEDs (400-500) and Red LEDs (600-700nm).

While all plants respond well to light of all wavelengths, the color spectrum depends on the type of plant in your indoor garden.


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