What is the "best" spectrum for growing cannabis?

spectrum grow light

This is a very interesting question. Different spectra have different effects on the growth of cannabis. Each spectrum has its own unique effect. Different stages of cannabis growth have different spectral requirements. There is no optimal spectrum for cannabis growth. But at different stages of cannabis growth, growers can choose the spectrum best suited to their needs and the conditions in which the cannabis is grown.

plant light

When cannabis plants are grown outdoors in the sun, the spectrum received actually provides the cannabis plant with a great deal of information about what is happening in the world around it. In spring and summer, more of the blue spectrum reaches the plant surface.

As summer comes, sunlight becomes more intense, and the spectrum of sunlight changes. Hemp and other related plants are affected by spectral changes in their signals and their own growth states. The leaves grow faster. Plants grow to absorb more sunlight and do better in the bright summer sun. According to research, the change in sunlight from spring to summer is signaled by the blue light from sunlight spreading to plants.

Blue light - Blue light promotes leaf growth, inhibits stem growth, and allows marijuana to use as many nutrients as possible to grow the leaves. The proportion of blue light can be adjusted during the growth stage of cannabis. Cannabis plants grown under these conditions have short but large, healthy leaves.

When autumn comes, the sun goes from direct to oblique. The sun is refracted through the atmosphere, and more red light passes through the atmosphere to reach the Earth. As summer and autumn come, plants receive signals of increased red light and prepare for winter. When exposed to red light, cannabis speeds up stem growth. As it grows, the leaves are spaced apart to better receive light and accumulate more nutrients for the fruit. In addition, the growth height is also conducive to the plant flowers in the moving air contact pollen, complete pollination.

Yellow/red light - Red light is good for plant stem growth. During flowering, cannabis increases the proportion of red light in LED cannabis lamps, which is conducive to growth, cannabis height and germination. Plants growing under red light enter the flowering cycle faster than those growing under blue light.

Spectra not only bring energy to plant growth, but also provide signals for plant growth. In order to better adapt to the environment and grow better, marijuana will change its growth state according to different spectrum. Growers can use this property of plants to regulate their growth. For example, if you want marijuana to bloom and sprout early, turn up the ratio of red light in the marijuana Plant Lamp; If you want to keep the leaves of your marijuana plant low and long, you can increase the percentage of blue light in your marijuana LED lights. Make good use of different colors of light to send out different signals for the growth of plants, so that the growth of plants in a favorable direction.