Jordan Freytag + photo

Jordan Freytag

Jul 18
2 min read
bubble 4

Updated 18 July 2023

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 plants have used their reserves. 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 fertilizers. Couldn’t microgreens use fertilizer to improve their growth, just like garden 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 water-soluble trace mineral fertilizer, or another fertilizer, such as FloraGro. Both provide essential nutrients to your seedlings—and in this case, your microgreens. Keep in mind they are applied using different methods.

Azomite

A fine powder mined from a volcanic ash deposit that contains a myriad of rare earth elements and trace minerals. We recommend mixing azomite in with your compost and incorporating that compost into your potting soil for microgreen growing. Or, just mix it directly into the potting soil you will be growing with. Mixing it in beforehand allows the Azomite to process and break down for better consumption by your microgreen plants. Apply 1 tablespoon per 10x20 tray or 1 teaspoon for every 2 inches of your pots diameter.

FloraGro

A water-soluble fertilizer containing nitrogen for structural and foliar growth. Wait until your microgreens are poking out of the soil and the cotyledon leaves are spreading apart, reaching for the light. Then, fill a cap full of fertilizer and mix it into a gallon of water. We recommend bottom watering at this point. This fertilizer won’t burn your seedlings like other garden mixes may.

Our Recommended Picks

Leave a comment

Your email address will not be published. Required fields are marked *

4 comments

Rick

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


David

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


Payal Patel

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


ruth

can’t get those products in australia or in my town can I put a light mix of dolomite on them


  1. Growing Microgreens at Home: A Beginner's ExperienceMicrogreens A Beginner's Experience with green microgreens

    Growing Microgreens at Home: A Beginner's Experience

    Written By Lara Wadsworth Microgreens seem to be used at every gourmet restaurant, are being talked about in every health magazine, and are having more and more scientific research released about the purported health benefits of these little plants. Wh...


    Ashleigh Smith + photo

    Ashleigh Smith

    2025-04-15
    10 min read
    bubble 0
  2. How to Harden Off Seedlings in 5 Easy StepsA woman carrying a tray of seedlings outdoors

    How to Harden Off Seedlings in 5 Easy Steps

    Written By Lara Wadsworth Hardening off is the process of gradually exposing your seedlings to new outdoor conditions to help them adjust without experiencing transplant shock. This is when a seedling becomes delayed, stunted, or even dies after being ...


    Ashleigh Smith + photo

    Ashleigh Smith

    2025-04-15
    6 min read
    bubble 4
  3. Questions to Ask Yourself For A Better Gardennull

    Questions to Ask Yourself For A Better Garden

    Written By Lara Wadsworth Planning a garden each year can feel very daunting. With so many possibilities, it can be challenging to know what to plant and where. But the key to success lies in careful review of the previous year and asking the right que...


    Ashleigh Smith + photo

    Ashleigh Smith

    2025-04-08
    7 min read
    bubble 0
  4. Why Your Seeds Aren’t Sprouting: Germination Tips and Troubleshooting GuideA seedling emerges from the ground

    Why Your Seeds Aren’t Sprouting: Germination Tips and Troubleshooting Guide

    Written By Lara Wadsworth Thousands of people every year flock to garden centers nationwide to buy young seedling plugs. While it is incredibly convenient to buy seedlings ready to be planted in the garden, starting seeds at home has some significant a...


    Ashleigh Smith + photo

    Ashleigh Smith

    2025-04-02
    14 min read
    bubble 0