So if you place the plants too far away the light is pretty much useless.
Best color light for growing weed.
Many growers prefer to use t5 fluorescent lights for seedlings and clones.
The light emitted from the fluorescent lights is effective only up to a foot anyways.
High pressure sodium or hps grow lights are far more efficient than other forms of hid.
To make the best use of a t5 light you can choose strains that tend to grow small.
Red light for flowering stage and better yields.
They emit a gentler yellow light that cannabis prefers when it is in the flowering stage.
This particular unit comes in a bright red color a stark change from subtly colored light panels from other manufacturers.
The most important general rule to remember about light and cannabis cultivation is that red spectrum colors induce flowering while blue spectrum colors promote growth.
Blue light is particularly useful during the vegetative growth phase while red light is particularly useful during the flowering stage.
Baby weed plants have different light requirements so you may wish to buy a separate grow light for this purpose.
The bulb uses 40 watts and provides a light output that is close to an incandescent bulb of 150 watts.
There are a variety of strains that are small yet powerful.
Blue ranges from 400 500 nm the ideal value would be 460 nm.
Cannabis plants like all other plants rely on the light spectrum for cues about their growth.
The blue light will be most prominent during the summer months as the sun is high and very bright in the sky.
It s often recommended for cannabis growers to use bright white fluorescents or metal halide grow lights during the vegetative stage since the extra levels of blue help keep young plants from growing tall and lanky and encourages lots of leafy growth.
Blue encourages plants to stop stretching out in search of it.
For the best results you will also want to supplement these with the other colors on the visible light spectrum.
Your cannabis plants will grow stronger while using grow lights with higher ratio of blue light.
The cfl grow light produces a warm white light with the perfect intensity to help the cannabis plant achieve its best results.
The satco hi pro spiral cfl bulb is one of the best grow lights for use during the flowering stage of cannabis.
Instead it can focus on outward growth and producing more leaves.
This yellow light helps encourage intense bud production.
It allows you to configure the eventual size of your harvest more precisely.
California lightworks 550w led grow light definitely falls under one of the more expensive lights on our list but this is one situation where you get the results you pay for.