How Does the LED Colour Spectrum Affect your Plants?
How Does the LED Colour Spectrum Affect your Plants?
Did you know that your LED grow light’s “colour spectrum” influences your plants? The colour spectrum of light refers to the combination of colours found in light. Unlike most other grow lights, LED grow lights allow you to specify custom light spectrums (or “spectra” another way to write the plural of “spectrum”) that change how a plant grows, including germination, growing new leaves and stems, and, most importantly for growers, how buds grow (their potency, final yields, and overall bud quality or appearance).
LED grow lights’ light spectrum, or colour mix, influences plant growth, including bud development.
Are the outcomes of growing weed with LEDs different from those obtained with other types of grow lights? What about the sunlight? Yes, it is a resounding yes. Unlike traditional grow lights, which have a rather “set” spectrum based on the chemical reactions that cause them to produce light, or the sun, which has a spectrum that you can’t truly change, LEDs allow you to generate a completely bespoke light spectrum.
For years, LED grow light manufacturers have collaborated directly with weed producers to study how spectrum affects their plants. They’ve uncovered a wealth of new information on how the light spectrum impacts plants, particularly weed plants. They’ve used this knowledge to create unique LED grow lights that produce higher yields and bud quality with weed than other grow lights, and even higher overall bud quality than sun-grown flowers.
How do you harness that power, which was only recently made available to home growers? Find out now.
Quick Note on how different colours in the light spectrum affect growth
- Blue light – Keeps plants short and healthy
- Green light – Keep plants healthy and increase penetration into the plant
- Red light – Makes plants grow taller, aids in flowering
- Far Red Light – Important for potency and bud formation
Optimal Spectrum: What is the finest bespoke LED grow light mix?
A wide-spectrum or full-spectrum light is often the best spectrum for cultivating weed with LED lights. In other words, it has a high concentration of blue, green, red, and far red. Depending on the light, the light will appear white or white tinged with blue/red/pink. If your grow light produces “blurple” light, which seems practically black, you are using outdated technology. When compared to current LED grow lights with a weed-friendly spectrum, these lights often produce poorer yields and lower bud potency.
“Blurple” LED lights are outdated technology that should be avoided if possible. They do not grow herbs as well as current LED grow lights with a wider spectrum.
Note: If the leaves do not appear green under the light (for example, if they seem purple, as in the image above), this indicates that the LED light is particularly poor. If you can’t see the green of the leaves, it means there’s no green in the spectrum, which is negative because green light is needed for plant growth and production. Aside from not being ideal for the plants, the odd colour makes it difficult to tell whether your plants are deficient in nutrients.
Modern LEDs provide light that seems largely white, but with hints of blue, yellow, or red/pink.
Good vegetative LEDs emit light that appears clean white or slightly blue.
Good flowering LED grow lights typically have light that looks a little pink or yellow, but the plants should still appear in full colour.
What else to consider:
- Form factor (form and size) – ensure that the LED is intended to fit the size space you’re growing in. A too powerful LED grow light might damage plants or overheat a limited area.
- Parts quality – a LED panel has various components, including LED diodes and drivers. Choosing current LED grow lights from reputable manufacturers is the best way to ensure you’re getting the greatest technology. Some low-cost generic LEDs use inefficient hold-technology LED diodes and drivers. In other words, they provide less light and generate more heat for the same amount of electricity. Choose LEDs that discuss using the
- Actual grow reports (This is crucial!) More aspects go into what makes a fantastic LED grow light than the average producer will ever want to know. That is why, rather than looking at the specs and attempting to figure out which will be the best in theory, it is often wiser to use an LED light because it has been proved to grow outstanding herbs. Just as in video games, theory-creation does not always produce the desired effects in real life.
When determining the finest LED grow lights, pay close attention to how plants perform under them.
What are the finest LED grow lights for herbs?
In the vegetative stage, you can use almost any LED grow light, but canna bis plants are much more finicky in the flowering stage.
Best LED Grow Lights for Vegetables
- High in blue to aid in keeping plants short
- Frequently classified as…
– “Full spectrum”
– “4000k” or greater – This refers to a specific “light colour temperature” on the Kelvin (K) scale, which is another method of measuring light colour. For the vegetative stage, any LED grow lamp with a Kelvin number ranging from 4000k to 6500k is suitable. The most typical values are 4000k or 4100k.
- You can also use blooming LED grow lights during the vegetative stage, although plants may grow taller and stretchier as a result.
Best LED Flowering Grow Lights
- High in red and far red (May be labelled “Veg and Bloom” o Some are labelled “Bloom” or “R-spec” or Red Spectrum)
- Effective (flowering plants require a lot of light)
- Tried on flowering plants
It might be tough to keep track of all the new LEDs that are released, and it can also be difficult to compare them.
Are you looking for LED grow lights that have been tested on actual canna plants? Please visit this page.
What more should you know about LED grow lights?
- The best temperature for plants under LEDs
– 75-85°F (24-29°C)
– Light breeze
- Optimal LED distance from plants – Follow the manufacturer’s instructions. If the answer is unknown…
-100W – 12′′ average
– Average 100-200W – 12-20′′
– Average 200-400W – 16-24′′
– 400-600W – average 20-26″
– More than 600W – 24-30′′+
If you notice signs of light stress, move LEDs further away.
How Does the LED Colour Spectrum Affect your Plants? How Does the LED Colour Spectrum Affect your Plants? How Does the LED Colour Spectrum Affect your Plants?