Led light for indoor growing

The role of light in plant growth.

How do we measure light for plants?

photosynthetically active radiation

Spectral range (wave band) of solar radiation from 400 to 700 nanometers that plants are able to use in the chemical process of photosynthesis. PAR’s irradiance is measured in energy units W/m2.

photosynthetic photon flux density

Chemical reactions of photosynthesis depend closely on the amount of photons (in the 400-700 nm range) received by a surface for a specified amount of time. PPFD is measured using μmol m−2s−1..

400 – 520 nanometers

This range includes blue light in order to prompt the plant’s vegetative phase during which chlorophyll absorbs energy from light, impacting photosynthesis and stimulating plant growth and leaf production.

610 – 700 nanometers

This range includes red light and is the peak period of light absorption, affecting the process of blooming and flowering, leading to fruit.


On-site microgreen farming provides the perfect opportunity to communicate relevancy in the changing retail landscape where consumers demand high-quality, fresh, sustainable produce.

This post is also available in: Italian

C-LED is a Cefla company specialising in the design and production of electronic applications and personalised lighting solutions that respond to customer requirements.

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