We wouldn't call any of the trays bad. You can use sharp scissors or knives to harvest. A Medium is that which you plant upon, when growing: Greens Grass Micro-Greens. Some commonly grown microgreens are listed in Figure 1. They are a low light crop (DLI below 20 mols/m2/day). Usually, a window on the south side of the house or apartment will receive more sunlight than one exposed north. The potential for using microgreens in meals is endless. Microgreen growing trays make growing anti-inflammatory and nutritionally dense microgreens a snap. Generally, select one type of microgreen for each tray—different microgreen types have different germination and growth rates. Photos: Francesco Di Gioia, Penn State. 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. Damping-off possibly caused by Rhizoctonia or Botrytis species in a microgreens tray. Photo: Elsa Sánchez, Penn State. Photo: Elsa Sánchez, Penn State. But the coconut coir and coir-based soil media grew larger microgreens over the nine days. 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. Right: Example of trays filled with a peat perlite mix before and after being watered from the bottom. Photo: Elsa Sánchez, Penn State. If you are growing microgreens for home-use, trays can be placed in a tub with shallow water. Since microgreens do not require a lot of medium to grow on flat trays are generally preferred over regular nursery pots. Little or no fertilizer is needed because the seedlings are not grown for very long before harvesting. These are among the easiest to grow varieties of microgreens if you are just getting started. After seeding It is enough to apply some water occasionally using a spray bottle just to keep the seed moist during the germination process. Students have been growing them in a greenhouse from August through May with supplemental lighting. 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. Photos: Francesco Di Gioia, Penn State, Use a spray bottle for misting water on the seeds after seeding. A propagator is worth the investment. Hydroponic Grow Mats. Reusable. You see, he’s always been into growing microgreens hydroponically, but wanted to test and see if there were better ways to grow microgreens. Microgreens may be harvested using a clean sharp knife or a pair of scissors right before being used for any preparation. All micro-greens are grown in the same way, sown into compost and placed in the light. Microgreens are commonly grown in 1020 (standard) greenhouse trays or 10- or 20-row seedling trays filled with soilless potting media. 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. Second only to sprouts, microgreens are the quickest food crop we urban gardeners can grow! After distributing the seeds on the growing medium surface, it is not necessary, and it could be better to not cover the seeds with soil so that the sprouts remain clean. After harvesting your microgreens, if your growing medium is organic you can compost it, while you can wash and re-use your planting trays or containers. One farmer mentioned that he replaces the blade on his electric knife frequently. He also uses the high tunnel to produce his spring vegetable transplants. Trays and or containers of different shapes and sizes may be used to plant microgreens. Broadcast seed evenly over the media. Microgreens, on the other hand, require a combination of growing in the dark, prior to exposing them to light (daylight or artificial light). 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? Sub-irrigation, such as with ebb-and-flow systems, works well for watering microgreens trays. Pea shoots – from seeding to harvest. Farmer Spotlight: Farmers at two large grower conventions told us that using electric clippers and knives to harvest microgreens results in shorter post-harvest life compared to harvesting with scissors. 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. Right: Example of a tray with drainage holes at the grocery store or market! Very labor-intensive, with most labor needed during planting and harvesting seeding of. 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