Detailed overview on appropriate color spectrum of LED grow lights for your plants

Photo of author

By Admin Desk

If you’re a gardening professional or indoor gardening enthusiast then you should be knowing about the importance of LED grow lights in indoor growing. Moreover, as nowadays many people have started growing stuff indoors LED grow lights have become efficient and never to be missed source of lighting for their indoor plants.

Well, just buying any random LED panel from the market won’t suffice either your or your indoor plant’s needs. Yeah, you need to select right color gradient frequency in your light if you’re expecting well-grown plants and better yield out of your garden.

Read Also: Things to Consider While Buying Light Pendant Lights in Perth wa

Moreover, LED grow lights usually come in a compact form factor so it becomes easy to install in even a smaller growing space. So, such things shouldn’t be your prime concerns before making a move.

In this article we’ll explain to you the importance of various color spectrum in an LED grow light for indoor plants. But, before we start with it, we would like you to get some basics related to the relationship between light and plants to be cleared. So, let’s understand the relationship between LED grow light’s spectrum and indoor plants first.

Crucial Relationship between plants and light

As we all know, any plant needs four basic elements to survive; Soil, water, air and light. Yeah, light is one of the important requirements of any plant indoor plant or outdoor plant.

Usually, outdoor plants gain light from real sunlight but indoor plants can’t cope up with it due to lack of connection with the outer environment. And also, sunlight might look white to your naked eyes but in reality it consists of a variety of bands within it.

Yeah, in real sunlight there are 7 basic color bands are presents which we usually notice in a rainbow. With the combination of each of these bands, our plants gather some of the very crucial sugars with the help of the process of photosynthesis. Yeah, you might have learned about it in your school days.

Now, if we look at the plant’s requirement then some of the chemicals present in plant leaves consume more red and blue light. Those chemicals are namely Chlorophyll A & B. Yeah, that’s one of the main reasons you notice the majority of LED grow lights on the market with either pink or purple light effect.

But according to Bloomshower, not only these two bands are required but plants usually seek all the colors in more or less quantity. However, it’s true that blue and red are primary colors that are absorbed more than any other color from our plants.

So, let’s check how all of these colors play a role in helping our plants in sustaining better health and growth.

Green Band In Light Spectrum

The green band is capable of reaching a deeper level of our plant canopies due to its mid-level frequency range of 500–600nm. So, if your plants are comprised of thicker and heavier leaf then this color band becomes crucial for them to provide with essential nutrients to thrive.

Far Red in Light Spectrum

If your garden has dense canopies and you want your plants to become more fruitful then this color spectrum becomes very crucial. Yeah, far-red is usually available within the frequency of 720–740 nm. And at that frequency in the spectrum graph this color tend to produce very healthy leaves which could generate more glucose sugars for your plants.


As mentioned earlier, at 2000K range this color is found in the spectrum graph. It’s very crucial to balance the entire spectrum effect which is delivered on plant canopies. So, this color band is also essential for your indoor plants.


As mentioned in the very beginning, this is a very essential and elemental color band that’s required by your plants to produce denser and resinous buds and flowers as well as fruits. This color band is usually available at the range of 630–660nm and produces a pinkish effect for your plants. It helps in boosting steam health and leaf building in our plants.


When your plants are passing through vegetation phase this color band is essential for them to have a healthy survival and safer migration to the blooming phase. It helps in overall growth and provides essential elements to plants for producing thicker shape.


Color bands are not only essential as food. But, some bands also provide all-around safety to the plants like IR and UV. Yeah, UV helps in germination and keeps negative elements out of reach from your plant leaf and IR helps in leaf and cell building.

What Bands are very crucial for your plants to thrive?

Well, the crucial color gradient and color band required from your LED grow light for your plants depends on your overall goals. Yeah, If you’re growing vegetables, herbs or indoor houseplants then you could supply them with all the essential light depending on the type of plant. According to many experts, plants could absorb almost all shades and color bands but depending on range and frequency or amount of density of color your plant’s growth may vary.

Moreover, for commercial gardening purposes you should opt for professional LED grow lights that provide custom features to operate light on any required band. Like some lights come with dual-mode light switch to switch is from red to blue and vice versa depending on requirements.