The best soil mixes for growing microgreens are those who have a high amount of moisture retention, has good nutrition and is fine in texture. Having a variety of options allows for creating mixes incorporating different colors, textures, and flavors. Photos: Francesco Di Gioia, Penn State. Left: Example of a tray with drainage holes at the bottom filled with a peat and perlite mix. We may be adding some other items here, so do check back. The suggestion is to use what is easily available and relatively not expensive, making sure that it is environmentally sustainable and that it is clean and safe. The growing medium is important because the capacity to hold soil moisture and the frequency with which water should be applied depends on its properties, and also many other aspects such as, the availability of nutrients and the quality of the microgreens. Planning. In our experience, this step promotes uniform moisture around the seed and results in more uniform stands of microgreens. For commercial sales, farmers commonly grow microgreens in protected structures like greenhouses and high tunnels. They can be grown year-round, indoors or outdoors, without … These are among the easiest to grow varieties of microgreens if you are just getting started. Photo: Elsa Sánchez, Penn State. If you are new to microgreens, these may be good ones to start with. All micro-greens are grown in the same way, sown into compost and placed in the light. Right: Example of trays filled with a peat perlite mix before and after being watered from the bottom. JavaScript seems to be disabled in your browser. Generally, select one type of microgreen for each tray—different microgreen types have different germination and growth rates. For some species like pea and sunflower, it is recommended to put some weight on the seeds during the germination process to keep the seeds in contact with the soil. Photo: Elsa Sánchez, Penn State. Discover 10 of the best microgreens to grow. At this point, you can start seeding by evenly distributing the defined amount of … After seeding It is enough to apply some water occasionally using a spray bottle just to keep the seed moist during the germination process. They offer big impact. View our privacy policy. Microgreens have a short post-harvest life, which can create local demand and the potential to generate large profits if a market exists. A few of the more popular grow media substrates for microgreens are: Soil Although messy, soil produces the best yields a If you are creating a microgreens mixture, you can combine different types after harvesting. Given the circumstances, with the arrival of the spring, many are reviving the idea of “Victory Gardens" and are investing in their home garden to grow their own fresh vegetables, while re-discovering the beneficial de-stress effects of gardening. Your market will determine price, quantity, and packaging, for example, in clamshells or plastic bags. Growing them at home also may be an antidote to high prices at the grocery store or farmers market. You do not really need a garden to grow your micros. To limit the contact between water and the greens it is recommended to water the trays from the bottom. Moreover, some species may be grown in a dark environment and do not require any light from sowing until harvest. By entering your email, you consent to receive communications from Penn State Extension. Why do we need this? Photos: Francesco Di Gioia, Penn State, Mustard microgreens – from seeding to harvest. Trays and or containers of different shapes and sizes may be used to plant microgreens. Overall, it’s very easy to grow microgreens without soil. But the coconut coir and coir-based soil media grew larger microgreens over the nine days. Production time can be as little as seven and up to 21 days from seeding to harvest, depending on the environment they are grown in and the type of microgreen that is grown. Photos: Francesco Di Gioia, Penn State. 10-row seeding trays, peat-based potting soil, 20-10-20 fertilizer, Varies by species; based on 10 g seeding rate. Most of the microgreen's seeds do not require any treatment. Growing without fertilizer works for soil and hydroponic microgreens because they grow so quickly, typically 7-21 days. When seeding by hand, we have found that it is helpful to start at the edges of the tray and then seed the middle to help ensure complete and uniform coverage of the tray. When harvesting microgreens, cut the seedling stems, leaving the roots behind. Like you, these tender little darlings need shelter! Left: Watering planting trays from the bottom. Photo: Elsa Sánchez, Penn State. See All Pest, Disease and Weed Identification, See All Beer, Hard Cider, and Distilled Spirits, See All Community Planning and Engagement, En el Camino: Granja Orgánica de Toigo 2018, En el Camino: Agricultura Urbana en Philadelphia. View our privacy policy. After filling or setting the trays with the growing medium, using a clean container without holes and filled with drinking water you can slowly wet the growing medium from the bottom, and once the medium is wet enough let the excess of water drain. Ideally, microgreens are taken to market immediately after harvest. You can also use electric knives or garden clippers. Left: Harvesting microgreens. By doing this, he gets more precise cuts and prolongs the post-harvest of his microgreens while harvesting quicker. We have seen microgreens selling for $1.75 for a ½ oz in a plastic bag through a direct market and $40 per pound in 14-gallon totes through a wholesale market. The confetti conforms to any container making it the perfect hydroponic grow medium for microgreens and wheatgrass in non-traditional containers. Second only to sprouts, microgreens are the quickest food crop we urban gardeners can grow! Photo: Elsa Sánchez, Penn State. In the Pennsylvania State University Hydroponics and Aquaponics course, students plant 10 to 12 grams of microgreens seed per standard seeding tray. Damping-off possibly caused by Rhizoctonia or Botrytis species in a microgreens tray. Definition Of The Nutrient Film Technique. Microgreens are grown in a thin bed of potting soil or hydroponically in a pellet of the substrate like peat, but with a little bit of liquid fertilizer, and they can be sprouted and grown on a mixture of vermiculite and perlite or even on a few layers of paper towel. Micro-greens, or micro leaves, are simply the seedlings of leafy herbs and plants that we would usually allow to grow to full size before harvesting. To name a few ideas, they can be used as a pizza topping, on tacos, in sandwiches, in salads, or the fillings of ravioli, pierogis, or empanadas. Values are meant to provide an estimate of the costs of producing microgreens. If you do not have space for a garden, believe that you do not have a “green thumb," or are discouraged by your previous gardening experiences, do not despair! It is important to understand your market to develop a microgreens product that meets consumer preferences. Plant seeds based on weight, volume, or by eye. These pads can be made of wood fibers, jute fibers, felt-like materials, or coco coir fibers. Self-Watering Microgreens Growing Trays - Reusable. Seeding rates vary depending on germination rates, seed size, soil and air temperatures, and light in the growing environment. He markets them directly to consumers as convenience food. For personal use, gardeners can grow them on windowsills and decks. The Microgreens germinate easily on a felt mat with the right humidity (90%). Microgreens are growing on a seeding mat in a vented clamshell. The most popular media used are peat-based mixes, coconut coir, as well as mats constituted of natural (cotton, kenaf, hemp) or synthetic fibers (rockwool). Yes, it’s possible to grow microgreens at home without soil using the magic of hydroponics! Washing microgreens in fresh drinking water before consuming them is always recommended, however, be aware that microgreens plant tissues are very gentle, and their shelf life may be substantially reduced after washing. Di Gioia, F., Renna, M. and Santamaria, P., 2017. You can use sharp scissors or knives to harvest. An Epic Gardening reader who grows microgreens recently emailed me and let me in on a little experiment he was conducting. An alternative could be to bag and store microgreens at low temperatures and wash them right before they are used. Photos: Francesco Di Gioia, Penn State. This type of irrigation system helps keep leaves and stems dry, which is important to avoid disease. Generally, use lower rates in the summer than in winter and for larger seed compared to a smaller seed. What are the most popular microgreen crops, and which ones are the easiest to grow. Microgreens will grow well in all three media types. To achieve this humidity you can cover the seeds or you can make sure to put them in a room with the right humidity. Keep in mind microgreens will grow under less than ideal conditions because they only need a short growing period. While most of us know the best way to grow micro greens is in a 10X20 tray, The big question is: what do I line the tray with? You can determine how many grams fit in a tablespoon and use it to apply seed by volume. You can also grow microgreens on seeding mats. Get notified when we have news, courses, or events of interest to you. In class, we have used a seeding mat inside 11-inch long x 71⁄8-inch wide x 5-inch tall vented clamshells, which were seeded with a mix of microgreens with similar growth rates. The result is containers of microgreens that you can sell without harvesting. Washing microgreens before selling them decreases their post-harvest life. And, like everything else in agriculture, the answer is... it depends. For the microgreens we have been growing, we have had success using 10 to 15 grams of seed per standard 12-inch x 20 inches 10-row seeding tray. During this process it is beneficial to rinse the seeds in running water a couple of times to wash the seeds and let them get some oxygen. By entering your email, you consent to receive communications from Penn State Extension. Notify consumers to wash their microgreens before eating them to extend the post-harvest life, if that is an option for your market. It is nutrient-rich and good at holding moisture for your plants. JavaScript seems to be disabled in your browser. Micro Mat confetti from Handy Pantry are perfect for those looking to grow wheatgrass, barley grass, microgreens, or other plants, without … They are a low light crop (DLI below 20 mols/m2/day). There is no soil rooting medium. Pea shoots – from seeding to harvest. At this point, you can start seeding by evenly distributing the defined amount of microgreens seeds on the entire growing area of each tray. While the COVID-19 crisis is not a food emergency and there is plenty of high-quality food available at the local level, going to the grocery store is more challenging right now and many have modified their grocery shopping habits. Since microgreens do not require a lot of medium to grow on flat trays are generally preferred over regular nursery pots. This can be easily achieved covering the microgreens trays with something that can block the sunlight. If you want to speed up the growing process, use a seed starting mat for this step. A propagator is worth the investment. At this point, besides the light, the only thing to do is to check that the seedlings have enough water. To facilitate the germination process and keep a good moisture level during the germination it is recommended to keep the seeds in a dark environment for a few days. Broadcast seed evenly over the media. Photos: Francesco Di Gioia, Penn State. You can create a wick hydroponic system that eliminates the mess of dirt and is self-watering. In selecting a place to grow your microgreens, consider that like any other plant microgreens benefit from good exposure to sunlight, therefore place them where you have more light. When that is not possible, they can be stored in cold storage for short periods. Photos: Francesco Di Gioia, Penn State. See All Pest, Disease and Weed Identification, See All Beer, Hard Cider, and Distilled Spirits, See All Community Planning and Engagement, 2015-2020 Dietary Guidelines for Americans, En el Camino: Granja Orgánica de Toigo 2018. Photos: Francesco Di Gioia, Penn State, Left: Seeding peas after pre-soaking in water for about 10 hours. You can learn how to grow microgreens – tasty, nutrient-dense ‘fast food’ – in just a few easy steps. If you have limited time, space or gardening skills let me introduce you to growing microgreens. Right: Example of 10' × 30' tray with and without drainage holes at the bottom. Springer, Boston, MA. Please check the ABCs of Microgreens to learn more about what microgreens are, how they are used, the species that are suitable to grow as microgreens, and where to source seeds. Yields per tray below are the average yields observed from 14 to 28 crop cycles during 2016-17. Photo: Francesco Di Gioia, Penn State. Many plants are grown as microgreens, including the types shown in Figure 1. They have an aromatic flavor and concentrated nutrient content and come in a … You can grow microgreens on soil, coconut coir, hemp mats, burlap, and more! Standard seeding trays, media, fertilizer, etc. I’m sure you’ve seen photos on Instagram of beautiful microgreens growing on thin fiber pads. According to the 2015-2020 Dietary Guidelines for Americans, the recommended amount of vegetables in a 2,000-calorie diet is 2½ cup-equivalents of vegetables per day. Farmer Spotlight: At a conference in the mid-western U.S., we talked with a farmer about his microgreens. Harvest is the most time-consuming part of the production process. A Medium is that which you plant upon, when growing: Greens Grass Micro-Greens. Growing them at home also may be an antidote to high prices at the grocery store or farmers market. Farmer Spotlight: We visited with a Pennsylvania farmer who grows microgreens in a high tunnel. While the natural sunlight available behind a window, on a balcony, or a small porch are generally enough to grow microgreens, it is possible to supplement the natural sunlight with a source of artificial lighting specifically developed for plant growth. One advantage of using seeding mats is that harvested microgreens are cleaner than when growing in potting soil. A thin layer of soilless media or vermiculite can be placed over the broadcast seed. Bari: ECO-logica srl. Now that we have covered soil-like growing media, lets turn our attention to … However, more than one type with similar growth rates can be grown in a single tray if desired. If you do fertilize, using a solution with 50 to 100 ppm nitrogen is generally sufficient. The closer you can harvest your microgreens to the media while keeping it clean, the better. Protect your Microgreens. You must have JavaScript enabled in your browser to utilize the functionality of this website. Hydroponic Grow Mats. Microgreens are nutrient-dense tiny greens that may be grown in limited space, in a relatively short time, even on a windowsill or in your kitchen. Microgreens seeded in a 10-row seeding tray and covered with a thin layer of vermiculite. However, to make good profits out of your farm, you need the maximum yield. According to studies, growing microgreens in the soil had the best yield possible. Still, cuts were less precise, and more plant tissue damage reduced post-harvest longevity of the harvested microgreens. If you’re using artificial lighting, you may not need to run it for as many hours each day (or at all) in the summer or on particularly sunny days. LEARN HOW TO STOP THE INVASIVE SPOTTED LANTERNFLY, Coronavirus: Information and resources for the Extension Community, Microgreens grown on a kitchen windowsill. Given their high nutritional value and the variety of species that you can grow, microgreens have the potential to provide you with nutrient-dense greens, and the de-stressing experience of working in your home garden. It is best to avoid pesticide-treated seed because, for some microgreen species, the seed coat persists on the seedling and can be eaten. Set your mat to … Microgreen growing trays make growing anti-inflammatory and nutritionally dense microgreens a snap. Soil: Soil is the most common choice for microgreen growing as well as seed-starting in general. A good level of sunlight will assure optimal growth and a higher accumulation of antioxidants are produced by plants primarily in response to the solar radiation. Sprouts, microgreens and “baby leaf" vegetables. The ideal germination temperature is … One farmer mentioned that he replaces the blade on his electric knife frequently. Remove trays from the tub once the potting soil has been wetted. Reusable. Right: Example of pea and sunflower seeds soaking in drinking water. They can be difficult to remove from the harvested product, and biting down on a piece of perlite is an unpleasant experience that could turn customers away from your microgreens. Left: Day 1. We have averaged about 0.30 lb or 136 g/10 row seeding flat for the types we are growing. The growing tray nests directly into the water reservoir tray, which holds up to 2 cups of water, enough to grow a full tray of microgreens in most conditions without re-filling. One of the best things about microgreens is that they grow on almost all kinds of growing media. Right: Growing trays kept in dark during the germination. Microgreens, on the other hand, require a combination of growing in the dark, prior to exposing them to light (daylight or artificial light). Add Nutrients to Your Diet The main recommendation is to make sure you are using material that is suitable for food production, that is clean, and that the trays have drainage holes at the bottom, which will allow to water the trays from the bottom without letting the water get in contact with the greens while enabling the excess of water to drain. Keep relative humidity consistent and as high as possible. Each Growing tray measures 7" by 5.25" with a depth of 1.25" to hold your chosen growing medium. Microgreens were grown in a greenhouse without supplemental lighting using a seeding rate of 10-15g over a 2-week production cycle. While microgreens planting trays of different sizes may be purchased from different sources, it is also possible to recycle containers deriving from food packaging. Right: Microgreens salad freshly harvested. The key here is to create a semi-controlled environment to achieve the best growing conditions for your greens. Another factor to highlight in marketing efforts is that research has shown microgreens generally have higher concentrations of vitamins than the same plants grown to maturity. Note the different colors and textures. Vegetables are a rich source of many nutrients that are critical for our health including; dietary fiber, pro-vitamin A, vitamin C, vitamin K, vitamin E, vitamin B6, folate, thiamin, niacin, and choline, as well as essential minerals like potassium, iron, zinc, copper, magnesium, and manganese. Growing microgreens Step by stepIf you observe, the seeds will start to lift the growing media that covers the seeds. Restaurants are the primary market, but microgreens are also available in grocery stores, farmers' markets, and as part of some Community Supported Agriculture (CSA) subscriptions. When harvesting, take care to avoid getting bits of potting soil in the microgreens. Nutrient film technique microgreens production (commonly known as NFT microgreens production) is a method of growing in which the microgreens have their roots in shallow stream of recirculating water, which consist of all dissolved elements required. Besides the fear of infection, psychologists are observing a negative impact on mental health during this period of social isolation. If you plan to grow microgreens continuously, for a more efficient production, it might be convenient to buy some growing trays and small tools specifically designed to produce microgreens. You see, he’s always been into growing microgreens hydroponically, but wanted to test and see if there were better ways to grow microgreens. Three trays used in the test. For starters, you can grow different types of salad greens, leafy vegetables, herbs and even edible flowers. Seed your trays. As the microgreens start growing, if the light is limited you will see the shoots leaning toward the light. Water should be provided only if necessary, avoiding excess moisture and allowing drainage to prevent the development of mold. Rockwool as a growing media is a pad made out of natural mineral fibers, produced from melted igneous rocks (no added chemicals). Johnny's Selected Seed Company recommends 6 to 8 large seeds per square inch of tray or 10 to 12 small seeds per square inch. Here is a short list of some of the most popular materials you can try. There is also the need to engage in a healthy lifestyle, which involves taking care of our health with regular physical activity and maintaining a healthy diet. His name is Darko, and he lives in Slovenia. You must have JavaScript enabled in your browser to utilize the functionality of this website. If you prefer to select seed that is not sold specifically for microgreens, it is important to use organic or non-treated seed. Changing temperatures can result in condensation, which can decrease post-harvest life. Opening the window occasionally to enhance air circulation may be beneficial as well to avoid excess moisture. For example, one tablespoon of brassica seeds weigh about 11 to 12 grams. Photos: Francesco Di Gioia, Penn State. Entering your postal code will help us provide news or event updates for your area. In addition to the clamshell method mentioned here, you can sell microgreens in seeding trays to eliminate harvest costs. After the germination process is complete and seedlings reach a certain height it is possible to uncover the trays and expose the sprouts to sunlight. Depending on the species and the growing conditions microgreens may be ready to harvest in a few days or in a couple of weeks after germination is complete. Photo: Francesco Di Gioia, Penn State, Left: Growing trays may be stacked to put some weight on larger seeds and kept in the dark. Right: Brassica germinated seeds exposed to sunlight 4 days after seeding. This page lists our offerings for Growing Mediums and Organic Fertilizers. Microgreens are edible plants harvested when they are young and small, at about 1.5 to 3 inches tall. Microgreens production for self-consumption in a household does not require the use of any special tool and besides the seeds, you should be able to find everything you need at home or in any household-product store (Figure 1). Low growing crops like basil, for example, end up pretty messy at harvest. This is because electric clippers and knives tend to tear stems. So he set up an experiment. The potential for using microgreens in meals is endless. If you are growing microgreens for home-use, trays can be placed in a tub with shallow water. If all goes well with germination, you won’t need that extra step to grow microgreens. Seeds can be soaked in water overnight for 8-12 hours. Depending on where you are planning to grow microgreens you need a clean surface or a shelf to place the growing trays. Growing Media • Soilbased – Any microgreen can be grown in soil, but that doesn’t mean it’s the best choice. Why do we need this? You can reuse planting media; however, it is better to use new planting media for each production cycle to minimize the development of disease. Right: Example of teaspoon and tablespoon used to measure the amount of seed for a small tray. The seed is also available in ready-made mixtures like spicy and mild mixes, or you can make mixes yourself. Microgreens won’t be able to grow in coarse soil, selecting a fine soil is highly recommended. Right: Seeding sunflower after pre-soaking in water for about 10 hours. You can measure the number of seeds using a small scale that you may have in your kitchen, once you measure the amount of seeds for a tray, you can measure the amount of seeds you need using measuring cups or spoons. Over the past few years, we have been growing microgreens as part of the Hydroponics and Aquaponics course we co-teach at Pennsylvania State University. You can also plant the seed by eye. We wouldn't call any of the trays bad. Sub-irrigation, such as with ebb-and-flow systems, works well for watering microgreens trays. Example of tools and material needed to start cultivation of microgreens at home: You will need 1) microgreens seeds, 2) small cups or containers to soak the seeds in water, 3) growth trays and 4) a growing medium (in this case is a peat and perlite mix), 5) measuring cups/spoons to measure the right amount of seeds per tray, 6) a small colander, 7) a pitcher and 8) a spray bottle. After selecting the species of microgreens you would like to grow and purchasing microgreens seeds, calculate the amount of seeds you need for your square, rectangular, or circular planting trays following the instruction provided here or using the Microgreens Seed Density Calculator  developed to make things very easy for you. To do this, you can cut an empty milk carton using scissors as shown here. Microgreens are commonly grown in 1020 (standard) greenhouse trays or 10- or 20-row seedling trays filled with soilless potting media. Not just for protection … Left: Example of a scale used to measure the amount of seed for a small tray. When planting most microgreens, sow seeds thickly. Selecting the best media – Soil vs Soilless vs Hydroponic Seeing the Light – Blacking out, exposing to light, best sources of light. For some species that require to be pre-soaked, you may need a few cups for soaking the seeds in water and a small colander to rinse the seeds once or twice before germination. Beginners often start by growing 1-2 types of seeds such as chia, broccoli, mustard greens, cauliflower, or kale. Unless you’re growing your microgreens in a room without windows, you need to take any natural sunlight that your plants are getting into account as well. Usually, a window on the south side of the house or apartment will receive more sunlight than one exposed north. • Soil–less media – Coco coir, blends of vermiculite and/or They can be grown year-round, indoors or outdoors, without requiring much time, equipment or expertise. Growing microgreens without soil is becoming more common. Growing Microgreens without soil. Water: pH balancing, pre-soaking, when to water and how much. Di Gioia, F. and Santamaria, P., 2015. That isn't to say that it's terrible to grow microgreens in a peat-based soil. Whether in front of a window or under lights, growing these teeny-tiny super heroes INSIDE your home is a fantastic way to give your family food security. Only a different growing method might be needed. Microgreens may provide you a new opportunity. Photo: Francesco Di Gioia, Penn State. It is suitable for growing microgreens as it is very easy to use, hygienic and it has 95% ability of moisture retention, which provides ideal conditions for the germination and growth of micro vegetables. You can just clear an area in your house and you will most probably be good to go. Photo: Elsa Sánchez, Penn State. They are able to use nutrients already in the seed, and in the case of soil, the initial rush of nutrients liberated from wetting the soil for the first few times. There are many options when it comes to choosing a growing medium for your plants. You should also use our contact form, to … Students have been growing them in a greenhouse from August through May with supplemental lighting. Figure 1. Left: Seeding mustard microgreens. Microgreens may be harvested using a clean sharp knife or a pair of scissors right before being used for any preparation. In Minimally Processed Refrigerated Fruits and Vegetables (pp. Complete germination. Right: Day 2. This disease is favored by warm, humid conditions. 20-Row tray of 5 varieties, selected for their similar growth rate, plus a range of colors, … In the case of sunflower and other species, maintaining the weight on top of the shoots during the germination process also facilitates the detachment of the seed hulls from the cotyledons. You can select any organic soil mix available at your local gardening store. Some commonly grown microgreens are listed in Figure 1. However, more space is needed for transportation compared to harvested microgreens. Get notified when we have news, courses, or events of interest to you. Little or no fertilizer is needed because the seedlings are not grown for very long before harvesting. 403-432). Center: Brassica germinated seeds exposed to sunlight 3 days after seeding. What are the best microgreens to grow? Photos: Francesco Di Gioia, Penn State, Use a spray bottle for misting water on the seeds after seeding. Right: growing trays kept in dark 3 days after seeding to make good out... With supplemental lighting Coronavirus: Information and resources for the Extension Community, microgreens are to! Of microgreen for each tray—different microgreen types have different germination and growth rates can be made wood. State University seedlings have enough water consent to receive communications from Penn State Extension where are. To sprouts, microgreens and wheatgrass in non-traditional containers microgreens start growing, if the light is limited will. 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Seeding peas after pre-soaking in water for about 10 hours over the nine days stems,! Tested an electric garden clipper, and which ones are the average yields observed from 14 28... Decreases their post-harvest life fertilizer in our Hydroponics and Aquaponics class microgreens because only. Nutrient-Rich and good at holding moisture for your area like spicy and mixes. Peas after pre-soaking in water overnight for 8-12 hours tend to tear stems trays from the tub once the soil! Best microgreens to grow in coarse soil, 20-10-20 fertilizer in our experience, this step uniform. Have averaged about 0.30 lb or 136 g/10 row seeding flat for the types shown in Figure.! Contact between water and how much the cover off as soon as you see the! Are commonly grown in a high tunnel to produce microgreens is the growing environment by 5.25 with! Of vermiculite growing environment lower rates in the same way, sown into compost and placed a. And air temperatures between 60 and 70°F misting water on the Hydroponics and Aquaponics course, students 10. Clean surface or a shelf to place the growing environment an area in your and! Can start seeding by evenly distributing the defined amount of seed for a small tray including... Achieve the best yield possible 20-row seedling trays filled with a farmer about his microgreens fine soil is recommended! Before selling them decreases their post-harvest life, which is important to use organic or non-treated.! To STOP the INVASIVE SPOTTED LANTERNFLY, Coronavirus: Information and resources for Extension... Even though production time is short, microgreens are growing on thin fiber pads start,. Depth of 1.25 '' to hold your chosen growing medium, growing microgreens without is! Meals is endless the summer than in winter and for larger seed compared to 2–4 days in conditions. Quantity, and more plant tissue damage reduced post-harvest longevity of the microgreen 's seeds do not any!