I grow microgreens regularly. Usually I use coconut coir, but wanted something easier and less messy. These mats are definitely easy to use. You can cut them to fit what ever container you want to use even though they are designed for started seed trays. They hold water very well, but provide air for the roots and support for you the greens.These did produce less microgreens than I get with traditional methods, and the microgreens took longer to reach full growth. (See picture.) I grew my favorite microgreen mix on this media and on my usual coconut coir. I did everything the same: the amount of seed I used, the water they were giving, the light, everything. These felt mats germinated at a somewhat lower rate, and the greens did not grow as well or as quickly. The roots did make it through the mat, unlike with felt or paper media I’ve tried, which means they had the opportunity to reach the water and nutrients below. It just took a bit longer. The hulls didn’t release as well as they do with coconut coir.So these mats are easy to use and are much less messy that traditional methods, but the microgreen yield is notably less. While I still prefer coconut coir, I’m going to keep experimenting with these to see if I can get better results. I hate wasting seed, but easier clean up means I grow greens more frequently. Also happy these can be easily composted just like coconut coir. I can also use the mats as mulch in the garden after growing my microgreens, which is big plus. [...]