Choosing the best Kelvin for the flowering phase of plant growth is essential when it comes to hydroponic farming.
As your plant graduates into different stages of your plant’s life cycles such as the seedlings phase, vegetative phase, flowering phase, and fruiting phase: there will be a need for light color switching to suit each of these plant stages.
So, if you’re wondering what the best Kelvin is for the flowering phase, we will let you know in this post.
Kelvin and Light Colors
It’s no news that light is important for the growth of plants and you need to be aware of the accurate Kelvin for each of the plant stages. The light (be it sunlight or other types of light) is used for photosynthesis activities. For hydroponic gardening, this light needs to be recreated like the light produced from the sun.
All the sources of light appearance are supplied by a light bulb and they are known as color temperature. Now, Kelvin comes from the measurement of these light colors because the light is measured in degrees Kelvin (K). The Kelvin (K) has a scale of 1,000 to 10,000. The Kelvin color temperature scale for commercial can go higher ranger about 2000K to 6500K.
As we mentioned earlier, the color temperature in bulbs is measured in Kelvin. Kelvin’s scale has tones of the red and orange light spectrum or warm white further down the scale. The other part of the Kelvin scale has a blue light spectrum or cool white.
The red light spectrum is the nighttime tones while the other end which is the blue light spectrum is the daylight tones.
Best Kelvin for Flowering Phase
From the Kelvin scale, the best Kelvin for the flowering phase is the red light spectrum otherwise known as cool white. This is the further end of the Kelvin scale and its required light for the flowering stage of the plant life cycle. This type of light is low in energy and will enhance flowering and blooming.
As the temperature goes higher, it gives a cooler light spectrum. The cool light falls above 5000k on the Kelvin scale. Meaning the light has more blue tones than red and this is not ideal for the flowering phase. What we want is a Kelvin scale of red tones (warmer tones) for our flowering phase.
Your bulbs should be around 2,000 to 3,000 in Kelvin (K) for the best Kelvin range for the flowering stage. We recommend you mix some tones of light in addition to the red light spectrum.
The flowering phase can also benefit from some moderate amounts of orange, blue, green, yellow, green, and some other colors. This will result in a better flowering or blooming rate.
Types of Grow Light for Flowering
The most common types of grow light used in the flowering phase are LED, high-intensity discharge light bulbs, and T5 light.
1. LED: LED is an excellent grow light you can use in providing light to the flowering phase of your plants as well as all the various plant cycles. Most LED grow lights are mostly full spectrum, this means they are dedicated to supplying your plant with the light spectrum for all plant cycles. Therefore, there’s no stress of changing light as your plant progress throughout their whole growing stages. For all the plant life cycle, the total light spectrum package of the LED grow light should include: blue LEDs (400 to 500 nm), Red LEDs (600 to 700 nm), a couple of white LEDs, and a couple of far LEDs (700 to 800 nm).
2. High-intensity discharge light (HID): high – intensity discharge light another cool grow light you can use in your indoor hydroponics. However, they emit lesser red light for your plant. So, as your plant is reaching its flowering phase, you may need to change or switch to high-pressure sodium bulbs for a higher red light spectrum.
3. T5 grow light: T5 grow light is another good option for your flowering plant stages.
Summary on Best Kelvin for Flowering
So, let’s take a look at some key points we listed above:
- The best Kelvin for the flowering phase is 2,000 to 3,000.
- The appropriate light colors for the flowering phase of your plant are the red and orange light tone spectrum.
- You can have a blend of other light colors in moderation to boost your flowering phase.
- The most common grow light for your plant life cycle is LED, high-intense light discharge (HID), and T5 grow light.