Microgreens Light Requirements: Meeting Your Greens’ Needs

HomeGrowingMicrogreens Light Requirements: Meeting Your Greens' Needs

Quick Answer:
Microgreens require adequate light to grow. They need at least 6 hours of direct sunlight or 12-16 hours of artificial light per day. LED lights and T5 fluorescent lights are popular options for providing the necessary light. Make sure to adjust the light height as the microgreens grow to prevent burning or stretching.

Microgreens are a type of vegetable that have become increasingly popular among home gardeners and chefs alike. They are known for their bold flavor, vibrant color, and nutritional value. But to grow them successfully requires knowledge about the optimum light requirements needed for each variety. This article will explore what those needs are, so you can ensure your microgreen crops thrive!

From sun-loving kale to shade tolerant cilantro, there is a wide range of plants suitable for growing as microgreens with different lighting needs. Some microgreens need more direct sunlight than others in order to reach their full potential; while some do better when they get less light or indirect sunlight throughout the day instead. Understanding which ones require what amount of light is essential if you want a successful harvest every time.

It’s also important to note that too much direct sun can be detrimental to certain types of microgreens, causing them to wilt or even die off entirely. To maximize your crop growth and keep your greens healthy all season long, it’s best to pay attention to how much light each type of microgreen gets during its growing cycle. So let’s dive into the specifics on exactly what kind of light requirements various kinds of microgreens need!

Growing Conditions

The growing conditions for microgreens are like a delicate dance. A balance of temperature, humidity, soil, drainage and water must be maintained to ensure optimal growth. Like the turn of a record needle on an old-style phonograph, you need to get these elements just right!

When it comes to providing the ideal environment for your microgreen garden, temperatures should remain between 65–85°F (18–29°C). Humidity levels should also stay around 60%, which can easily be accomplished by misting regularly or using a humidifier.

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The soil used for your microgreens should have good drainage while still retaining enough moisture to keep them hydrated; adding organic matter is recommended as well. Water the plants lightly twice daily with warm water in order to provide adequate nutrition without over-watering.

These simple steps will help ensure healthy and vibrant microgreens that taste great too! Moving forward, we’ll explore natural sources of light needed for photosynthesis — let’s dive into this next topic!

Natural Sources Of Light

While sunlight is the best source of light for microgreens, natural daylight can provide adequate illumination as well. Natural daylight is composed of different types of solar radiation and its intensity depends on a variety of factors such as time of day, sky conditions, and geographic location. The light spectrum emitted by natural daylight provides essential wave lengths that are beneficial to plants in photosynthesis.

In addition to direct sunlight or natural daylight, there are other sources of natural illumination available. For example, indirect sunlight from windows or skylights can be used to supplement direct sun exposure when growing microgreens indoors. Reflective surfaces like mirrors and white walls also help enhance the amount of light reaching plants even if they’re placed further away from a window.

Overall, it’s important to recognize the importance of providing enough light for successful growth when cultivating microgreens indoors. With the right combination of natural sources and artificial lighting solutions, you will be able to create an optimal environment for your greens!

Artificial Lighting Solutions

For those who do not have access to natural sunlight, artificial lighting is a viable option for growing microgreens. Grow lights are specially engineered lamps that provide the light intensity and spectrum required for proper growth. It’s important to adjust the timing of the lights so they match when daylight would naturally occur in order to maximize healthy development. As far as duration goes, 10-14 hours per day should be sufficient for most types of microgreens, however some may require more depending on their needs.

It’s also beneficial to experiment with different intensities or heights at which the grow lights are placed relative to the plants so you can find what works best for your specific crop. Make sure to use a timer if necessary, so your greens get just enough light without too much or too little. In addition, it might be helpful to rotate trays occasionally in order to ensure even exposures throughout the whole batch.

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Adequate light is essential for good quality microgreen production; therefore taking these precautions will help ensure success regardless of whether you’re using natural or artificial lighting sources.

Benefits Of Adequate Light

Light is essential to the health of microgreens, as it helps them absorb nutrients and fuel photosynthesis. Without adequate lighting, microgreens will not grow in a healthy manner and their nutritional content may be reduced. A study conducted by researchers at the University of Colorado Boulder found that exposing plants to higher light intensity increased their nutrient levels significantly; specifically, their vitamin C levels were doubled compared to those grown with lower light intensity. This illustrates the importance of providing adequate light for optimal growth and nutrition.

Adequate lighting also affects the shelf life of microgreens by impacting their cell metabolism rate which can extend or reduce its lifespan depending on how much light they receive. Plants exposed to high-intensity lights grew faster than those receiving little or no light, leading to an extended shelf life for products derived from these greens. Furthermore, increasing illumination has been shown to improve leaf color and increase overall yield as well as other beneficial effects such as improved germination rates and better resistance against pests.

Thus, sufficient lighting plays a crucial role in producing quality microgreen crops while allowing farmers to maximize yields with minimal inputs. However, too much exposure to sunlight or artificial lights can result in potential risks including plant burnout and poor root development due to dehydration – both of which could lead to crop failure if not managed properly. It is therefore important for growers to understand the relationship between proper lighting and successful cultivation before commencing any project involving microgreens production.

Potential Risks Of Poor Lighting

Poor lighting can be dangerous for microgreens, as it may lead to a number of issues. Three potential risks include:

  • Light Deficiency: When plants are deprived of light, they will not grow properly and may suffer from stunted development or death.
  • Light Damage: Too much exposure to direct sunlight or very bright lights can cause leaves to burn and die off prematurely.
  • Light Shortage: Not enough light makes photosynthesis sluggish and reduces the amount of nutrients available for plants to absorb.
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Lack of light prevents the plant from receiving sufficient energy and limits its ability to produce food through photosynthesis. This results in weakened growth, discoloration, slow maturation, and smaller yields overall.

Inadequate lighting conditions put strain on microgreen health which can have long-term consequences if left untreated. It is important to ensure that your microgreens receive an adequate supply of light so they can reach their full potential.


In conclusion, microgreens are a nutritious and delicious addition to any diet. They require the right combination of sunlight and artificial lighting in order to thrive. Natural sources of light like direct sun can provide enough for some plants but others may need supplemental light from LED or fluorescent lamps. Adequate light allows microgreens to reach their full nutritional potential while poor lighting can result in stunted growth and decreased nutrient content. With careful consideration of your microgreen’s needs, you’ll be able to reap all the health benefits they offer!

I’m passionate about using fresh ingredients whenever possible, so I make sure my microgreens get plenty of sunshine as well as additional artificial lighting when needed. It’s been worth it; not only do they taste great but they also look amazing on top of salads and other dishes. Plus, knowing that I’m getting an extra boost of vitamins makes me feel even better about enjoying them.

Whether you’re just starting out with growing your own microgreens at home or already have years of experience cultivating them, making sure your little greens have access to adequate amounts of light is essential for healthy growth and maximum nutrition. So don’t skimp on the light – let those tiny sprouts shine!

Kathy Turner
Kathy Turnerhttps://mastermicrogreens.com/
Kathy Turner is the founder of MasterMicrogreens.com, a popular blog dedicated to helping people become master microgreen growers. Kathy is passionate about helping others learn how to grow the healthiest, most nutrient-rich microgreens. She believes that with the right knowledge and resources, anyone can become a successful microgreen grower. Learn more about Kathy by viewing her full Author Profile.

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