How Much Light Do Microgreens Need? Finding the Right Balance

HomeGrowingHow Much Light Do Microgreens Need? Finding the Right Balance

Quick Answer:
Microgreens require a lot of light to grow properly. Generally, they need between 12 to 16 hours of light per day. If grown indoors, it is essential to use a grow light to ensure the microgreens receive adequate light. The light source should be placed around 2-4 inches above the microgreens, and it is recommended to use a timer to maintain a consistent lighting schedule.

Have you ever wondered how much light microgreens need to grow? Microgreens are a type of edible green that is full of flavor and nutrition, making them popular with many health-conscious consumers. It’s no wonder they have become so trendy in recent years! But if you want to get the most out of your microgreen crop, it’s important to understand its needs – including how much light it requires. So let’s take a closer look at what kind of lighting conditions are optimal for growing healthy, delicious microgreens.

Light plays an essential role in the growth and development of all plants, but especially so when it comes to microgreens. These delicate greens require just the right combination of sunlight, artificial light source or both in order to thrive. That being said, there are certain key factors that must be taken into account when determining exactly how much light your microgreens need. In this article we will explore those considerations in detail and provide some useful tips on meeting your microgreen’s specific lighting requirements.

So whether you’re a beginner looking for advice on getting started or an experienced gardener seeking more information about best practices for growing healthy microgreens, this article has something for everyone! Read on to learn all about providing the perfect amount of light for strong and vibrant microgreens crops every time.

Light Requirements For Optimal Growth

Microgreens need light to grow and develop. Light is essential for photosynthesis, which provides the energy needed to create sugars and carbohydrates that feed the plant’s growth. The amount of light required depends on the type of microgreen being grown, as different varieties have different needs. Generally, microgreens prefer between 8-14 hours of direct sunlight each day in order to reach optimal growth.

For indoor growing or when natural sunlight isn’t available, artificial lighting can be used instead. Fluorescent lights are best suited for this purpose due to their low wattage, while LED lights provide more intense illumination and require less frequent replacement than traditional incandescent bulbs. Positioning the lights close enough to the plants so they receive adequate amounts of light without burning them is important, as too much heat from an artificial source could damage them quickly.

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No matter what kind of lighting system is used, it’s important to monitor how long and often it’s left on throughout the day – running it for too short a duration won’t give your microgreens enough time to absorb all the nutrients they need in order to thrive. With proper care and attention, you should be able to ensure they get just the right amount of light in order to produce healthy crops with minimal effort. Transitioning now into discussing natural light vs artificial light…

Natural Light Vs Artificial Light

It may seem counter-intuitive, but believe it or not, microgreens don’t need much light to grow. In fact, you could almost say they thrive in the dark! But of course, this doesn’t mean that you can just leave them growing in a dark corner and expect good results – there is still some light required for successful growth. So what kind should you use? Let’s have a look at natural and artificial options:

  1. Natural Light: Sunlight is always best for any type of plant growth, providing essential energy for photosynthesis. This holds true for microgreens as well; however, depending on where you live, getting enough sunlight indoors can be difficult. If you’re lucky enough to have access to plenty of sunshine, then it’s definitely worth taking advantage of it when growing your greens.
  2. Artificial Light: If natural light isn’t an option (or if your plants aren’t getting enough), then artificial lighting can provide the necessary illumination indoors. Growing lights are available commercially and come in several different types such as HID lamps and fluorescent bulbs – both work well for indoor cultivation of microgreens. It’s important to ensure that the correct amount of light intensity reaches your plants so they experience optimal growth conditions while being cultivated indoors.

So regardless of whether you choose natural or artificial light sources when cultivating your microgreens, it’s clear that brightening up their space won’t require much effort – only a small amount will do! With this knowledge we can now move onto looking at other factors which affect the requirements for growing microgreens successfully…

Factors Affecting Light Requirements

Transitioning from the previous section, when it comes to growing microgreens indoors, there are several factors that affect light requirements. Light intensity, duration, soil type, temperature and humidity all play a role in determining how much light is needed for optimal growth of microgreens.

Light intensity refers to the strength or power of light on a particular surface area. Generally speaking, higher intensities of light result in faster germination rates and larger yields. However, too much can be detrimental as plants will become stressed and struggle to survive. The ideal range of light intensity for microgreens should fall between 400-800 lux during peak sunlight hours.

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Light duration is also important since it directly relates to the amount of photosynthesis which takes place within each plant cell. Microgreens need about 16 hours of full spectrum lighting per day for maximum production yield; however anything above 8 hours would suffice depending on other environmental conditions such as soil type and climate control like temperature and humidity levels.

Soil type has an influence on how well a crop absorbs water and nutrients which ultimately affects its overall healthiness in addition to its ability to withstand long exposure periods with intense light sources such as HID lamps or LED strips. Temperature must remain at consistent warm temperatures (around 70°F / 21°C) while humidity levels should not exceed 50%. These two parameters have direct impacts on root development so they must be monitored closely so as not to compromise the quality of your harvest.

In order for successful indoor cultivation of microgreens, these five main components –light intensity, light duration, soil type, temperature and humidity– must work together harmoniously in order for you to reap the benefits from this method of urban farming!

Growing Microgreens Indoors

It’s no secret that plants need light to survive, but just how much light do microgreens need? Growing microgreens indoors is an increasingly popular method of cultivating these nutrient-dense vegetables. But what sort of lighting should be used and what are the requirements for growing microgreens indoors successfully?

When it comes to providing adequate light for your indoor microgreen garden, artificial lights may be necessary. Depending on the type of microgreen you’re growing, different varieties require various levels of light intensity. For example, some crops require more sunlight than others; many lettuce varieties will thrive with as little as five hours per day while other species such as kale might need up to eight hours or more. So before planting any seeds, make sure you know exactly how much light each variety needs!

Additionally, when using artificial lights to provide additional lighting for your indoor garden space, consider positioning them at certain heights above the soil surface in order to maximize photosynthesis while also avoiding burning or damaging the plants. Make sure they are placed close enough so that all parts of the plant get equal amounts of illumination without blocking out natural sources like windows. With proper planning and execution, you can ensure that your microgreens receive ample light throughout their growth cycle and reap the benefits of adequate lighting during harvest time.

Benefits Of Adequate Lighting

Adequate lighting is essential for microgreens to grow and develop properly. Microgreens require a certain light intensity level in order to produce the nutrition necessary for their health benefits. The amount of light that your microgreens need will vary depending on the type of species you are growing, as well as other factors such as temperature, humidity and photoperiod requirements.

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When selecting a light source for your microgreens, it’s important to consider the spectrum of lights available. Different types of lights have different properties which can affect how much photosynthesis takes place and ultimately influence the growth rate of your plants. Generally speaking, natural sunlight or full-spectrum LED lamps provide the best results when used with microgreens.

It’s also important to ensure your plants get enough rest by providing them with darker periods during night time hours; this helps regulate their circadian rhythm and ensures they don’t become overstimulated from too much light exposure. This balance between adequate lighting and dark resting periods allows microgreens to thrive without being exposed to excessive amounts of light that could damage their delicate leaves or stunt their growth.

By maintaining an appropriate light cycle for your plants, you can maximize the nutritional content within each harvest while ensuring that all of your hard work pays off in terms of optimal plant growth and production.


In conclusion, growing microgreens is an easy and rewarding endeavor. With the right amount of light, these nutrient-packed greens can be harvested in as little as two weeks! Natural sunlight provides just the right intensity for optimal growth, but if that’s not possible artificial lights can help you get close. You’ll need to consider a few factors like wattage and distance when setting up your lighting system, but once that’s done you can reap the rewards of having fresh microgreens year-round.

Growing microgreens indoors gives us access to healthy produce no matter what season it is outside. It also encourages us to take on more responsibility with our own food production, allowing us to create something special from seed to harvest. Watching those tiny seeds transform into delicious plants before our eyes is truly a magical experience – one I’m sure many will treasure for years to come.

Ultimately, giving your microgreens enough light means giving yourself the best chance at success in the garden. Whether you choose natural or artificial light sources, taking the time to provide your crops with adequate illumination unlocks their full potential and ensures they reach maximum flavor and nutrition.

Kathy Turner
Kathy Turner
Kathy Turner is the founder of, 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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