Plant Grow Light, VOGEK LED Growing Light Full Spectrum for Indoor Plants, Plant Growing Lamps for Seedlings, 3 Switch Modes 10 Brightness Settings (Black)

 Plant Grow Light, VOGEK LED Growing Light Full Spectrum for Indoor Plants, Plant Growing Lamps for Seedlings, 3 Switch Modes 10 Brightness Settings (Black)

•  Grow light can be timed to 3, 6, 12 hours as the plant needs, bringing enough but suitable brightness to your plant. With auto on/off function. Plant light will be restarted automatically the next day without manual operation.
• LED growing lamp can provide 10 brightness level. You also can choose one, two or three lamps on.
• Grow light has a strong desk clip, and 3 bendable gooseneck between the clip and the lights which you can move the light to the position you need.
• Vogek Grow light can offer full spectrum. The plant bulbs are replaceable, so you can replace new bulb instead of buying a new light when the life time of bulb is end.
• Our plant growing light is made of 144LED beads, which can provide strongand uniform intensity of light to plants. This Grow lamp has more larger lighting area.

What is the best artificial light for plants?

We know that for good plant health and growth, light is necessary, especially sunlight. But we can have a series of alternatives to sunlight for indoor cultivation that allows us considerable energy savings, such as LED lighting for plant growth.

Depending on three fundamental factors, we will see what type of artificial light is good for plant growth. These factors are as follows:

• Light color
• Hours of light
• Amount of light we supply to plants

Light color

Here we will see the  sum of colors  that make up the light that reaches the plant. Within electromagnetic radiation, visible light is the part of electromagnetic radiation that we can see. The color of light depends on its  wavelength (or frequency) , normally measured in nanometers ( nm , one millionth of a meter). Specifically, visible light or the visible spectrum (what the human eye can perceive) is composed of radiation ranging from  380 nm  (blue) to about  740 nm  (red). They are very approximate data since it depends on the perception of each person. Beyond the blue we have the  ultraviolet  (with a shorter wavelength) and on the other side we have the  infrared (with longer wavelength).

If we divide this spectrum of colors into fragments of interest to plants, we have a blue one  , a green one (a color that plants do not absorb and for that reason we see them as green), a red one, which includes the called far red.

Light emissions (for example from the sun) are composed of photons (which have some of the properties of a wave and some of a particle) of different wavelengths (colors). For example, sunlight is a combination of certain wavelengths, giving  white light . In addition, the sun gives other wavelengths that we do not see, such as infrared (heat) or ultraviolet, which are outside the visible spectrum.

Color Blue (between 400 and 500 nm):

the blue color is responsible for  vegetative growth  (which occurs after germinating and until flowering). When we give a plant only blue light, it grows shorter and has a darker color.

Red / Far Red (600-700 nm):

Plants interpret these colors as the  ratio  of one to another. This relationship influences the  elongation of the stem , especially in direct light crops. Plants reflect far red much more than red. A consequence of this is that when there are many plants together, the amount of far red increases (the red / far red ratio decreases) and this causes the plants to lengthen their stems (for example, to capture the light better since there is competition) .

Blue and red:

This combination favors flowering.

Choosing good lighting (artificial or solar) is important to have the best results.

Number of hours of light or Photoperiod

The  photoperiod  is the number of hours of continuous light that a plant receives in a 24-hour period. In the case of being in the field, the photoperiod  will last the same as the hours of sunlight , as is logical. In addition, it must be taken into account that the photoperiod varies depending on the season and as we have seen before it can affect the flowering of some plants.

Short-day plants   are those that bloom especially when the day is shorter than a certain amount. And on the contrary, those with  long days  are those that flower only or more easily when the day is longer than certain hours. We could say that this number of hours is  around 12 , although it varies by species. Finally we have  neutral plants  in terms of day, whose flowering does not depend on the photoperiod. Apart from flowering, it can affect branching, growth, and other aspects of the plant.

Amount of light

By quantity we mean the  number of photons  that a surface receives and photosynthesis can take place. We can refer to the amount at a certain moment (light intensity) or all the light it receives during a day.

What kind of light do I need?

The first thing to consider would be the type of plant you have, if you have some sunlight or no sunlight. They are the different situations that we can find. In each of them the differences will be the power of light that we need.

We have seen that plants need blue light and red light, depending on how much blue and red light we will favor the growth of the plant as well as its flowering. The redder the more flowering.

With LED lighting we can get "pure" colors from a light source since we can give blue light and red light that the plant needs without providing anything more than what is necessary for growth and flowering. This will save on energy costs, for example, to illuminate with green if the plant does not absorb it.

In this diagram we can see the light distribution of a led luminaire for plant growth, ideal for indoor cultivation