Jordan Freytag + photo

Jordan Freytag

Apr 9
2 min read
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Fertilizing Microgreens!

By now, we’re all familiar with fertilizer when it comes to growing garden vegetables and flowers. When the cotyledon leaves appear on your seedlings, it’s a sign your young plant has used its reserves and its roots are now searching for additional nutrition in the soil. Adding fertilizer doesn’t just improve the growth of your garden crops, it is essential for healthy growth and production. Yet when it comes to microgreens, one doesn’t talk much about fertilizer. Couldn’t microgreens use fertilizer to improve their growth just like conventional seedlings? We say yes—you just need to know which fertilizers are the most ideal for microgreens and how to use them.

We suggest using either Azomite, a trace mineral fertilizer, or a water-soluble fertilizer such as, FloraGro. Both provide essential nutrients to your seedlings—and in this case, your microgreens—but they are applied using different methods.


A fine powder mined from a volcanic ash deposit that contains a myriad of rare earth elements and trace minerals. We recommend mixing it in with your compost and incorporating that compost into your potting soil for microgreen growing, or just mix it directly into the potting soil. Mixing it in before-hand allows the Azomite to process and break down to be better consumed by your microgreen plants.


A water-soluble fertilizer containing a well-balanced amount of nutrients for structural and foliar growth. Wait until your microgreens are poking out of the soil and the cotyledon leaves are spreading apart and reaching for the light, and then fill a cap-full of fertilizer and mix it in a gallon of your watering water.


Payal Patel

I am looking for 100% organic liquid fertilizer for growing micro greens. Please suggest me. Thanks.


Hello, I hope you are very well. How much Azomite should be used to combine with the potting mix? Thanks


Thanks for your post, I seem to have always missed this most important step 😀