To achieve maximum and healthy microgreen growth, the right lighting situation is crucial. Microgreens require more than just natural sunlight; they also need careful exposure to certain light spectrums, intensities, and durations. This article will cover everything you need to know about optimal lighting strategies and resources for microgreen cultivation. It will inform your choices based on the most recent research, most effective practices, and features of the best lighting products available on the market for microgreen growth.
Microgreens refer to young, tender, edible crops that are harvested before maturation, usually within 7-21 days after germination. Common examples include kale, radish, peas, arugula, and beet microgreens. These tiny plants are packed with nutrients that surpass those of their fully-grown counterparts. Generally, two main types of lights are used for growing microgreens indoors: fluorescent lights and LED (Light Emitting Diode) lights.
Why the Right Light Matters
The right light spectrum affects microgreen growth, health, and nutritional content. Light influences plant physiology, including photosynthesis, which turns light, water, and CO2 into food for the plant. According to research, the critical light spectrums for photosynthesis are red and blue.
Red light (600-700 nm wavelength) influences plant growth, governing flowering, fruiting, and overall plant development. Blue light (400-500nm) regulates plant growth, affecting leaf thickness, stomata opening, and more. A balance of red and blue light aids optimum plant health and yield.
The light’s intensity or brightness affects photosynthesis rate and, therefore, plants’ growth rate. The brighter the light, the more energy provided to drive photosynthesis, producing more food and expediting growth.
Light duration also influences plant growth. Long daylight hours can enhance photosynthesis, but each plant type has its ideal light-dark phase duration. Excessive light exposure may cause stress to plants. Microgreens generally require 12-16 hours of light exposure daily.
Advantages of LED Lights for Microgreens
LED grow lights surpass fluorescent lights in many areas. LED lights are energy-efficient, have a longer lifespan, and have an adjustable light spectrum to tailor to different plant growth stages. Their energy efficiency makes them environmentally friendly and cost-effective in the long run. LED lights have specific light spectrums, which cater to stages of plant growth.
Types of LED Lights for Microgreen Growth
There are three main types of LED lights suitable for microgreens: full spectrum, broad spectrum, and targeted spectrum.
Full-spectrum LED lights encompass the entire light spectrum, from infrared to near-ultraviolet. Despite reaching beyond the plant’s visible light spectrum, full-spectrum LED lights replicate natural sunlight, promoting healthy growth for all growth stages.
Broad-spectrum lights include red, green, and blue lights but may lack the UV and IR light found in full-spectrum LEDs. However, they still support good plant growth across all stages by providing the essential red and blue lights necessary for photosynthesis.
Targeted spectrum lights primarily focus on the red and blue light considered critical for photosynthesis and plant growth. Targeted spectrum lights are suitable for densely planted crops like microgreens, enabling each plant access and utilization of this vital light spectrum.
Top Picks for Microgreen LED Lights
-
Roleadro LED Full Spectrum Grow Light: Roleadro offers one of the most popular LED grow lights on the market. Providing a full light spectrum, Roleadro’s LED light stimulates microgreens’ photosynthesis, enhancing growth and nutrient content. This light is also highly energy-efficient and guarantees the longevity of 50000 hours.
-
Yescom LED Full Spectrum Grow Light: Yescom’s LED light offers a 225-light panel suitable for large batch microgreen growing. It covers full-spectrum light and is easy to install, making it suitable for setting up an indoor microgreen farm.
-
Mars Hydro TS 1000 LED Grow Light: This LED light offers a sun-like full spectrum, including all necessary wave lengths of natural light, making it ideal for all stages of growth. It also features reflective aluminum to increase light intensity by up to 20%, allowing your microgreens to receive more energy without burning.
-
Shengsite UFO LED Grow Light: This 75W LED light covers a broad light spectrum with balanced light distribution due to its UFO shape. It caters to both small and large scale microgreen enterprises.
-
Juhefa LED Broad Spectrum Panel Grow Light: Juhefa’s LED grow light offers a broad light spectrum, covering red, blue, and white light. It is versatile, switching between 9 dimmable modes and 3 switch modes. It is perfect for beginner microgreen growers due to its affordability and straightforward installation processes.
Tips to Optimize LED Lights for Microgreens
Maintaining the right distance between the light and the plant is crucial. If too close, the plants could scorch; if too far, they may receive insufficient light. For most LED lights, a range of 6-12 inches is ideal for microgreens.
Consistency in light exposure is crucial for optimum growth. Using timers sets a regular light-dark phase rhythm, with many preferring 16 hours of light and 8 hours of darkness for microgreen growth.
In conclusion, lighting plays a paramount role in growing microgreens. With the right LED light, spectrum, intensity, and duration, you can enhance your microgreen yield, nutritional content, and overall plant health. From full-spectrum to targeted spectrum, different types of LED lights can cater to your specific needs. Regardless if you are beginning your microgreen journey or scaling up an existing enterprise, there is an LED lighting solution just for you.
