Radish microgreens are the fastest growing and most affordable brassica microgreen. This fast and furious microgreen is also packed with nutrients and antioxidants, making radish microgreens a perfect vegetable for novice growers.
Radishes are versatile. Some varieties mature in as little as 2 weeks, while others are used as cover crops to re-mineralize the soil and oil production.
In this growing guide, I will be growing radish microgreens of a mixed variety and cherry belle variety, and steps required to push growth for bulbs.
Radish microgreens are a good source of vitamin B and C, as well as magnesium, zinc and phosphorus.
Radish microgreens are not only enriched in antioxidants, but also up-regulate your body's defenses against oxygen radicals (2). In addition to its anti-cancer properties, radish microgreens also reduces the risk of diabetes. Rats fed with radish microgreens had decrease blood glucose, tricglycerides and LDL. (1)
While you can grow microgreens on 1 inch tall containers, you will have to upgrade to at least 2 inch tall containers if you want to grow radish bulbs. Personally, I use 5 inch tall containers for less messier harvesting.
I use a peat based growing medium to grow radish microgreens, a mixture of 10 : 1 ratio of peat moss and vermiculite by weight. Vermiculite enhances aeration and moisture availability.
In addition to vermiculite, I added fertilizer to the growing medium to a final concentration of 0.5% Nitrogen to support growth.
In order to enrich the mineral content of radish microgreens, you can add sodium selenite to the growing medium at 30 mg per square foot. Selenium enriched microgreens have increased bioavailabilty versus selenium supplements, and much higher anti-cancer properties (3).
Peat moss medium should be vigorously mixed with water before use. Dry peat moss repels water annd floats. Dry peat moss is very difficult to water.
Radish microgreens are seeded at a maximum of 50 g per square meter or 1/4 oz per square feet. With the cherry belle variety, I would seed it at 5 g per square meter in order to harvest both bulbs and greens.
Cover the seeds with 1 inch of growing medium to ensure proper germination.
Growing in high density makes it also susceptible to fungus. Limit the use of humidiy dome for a maxium of three days after seeding to lower the risk of fungus.
To harvest radish microgreens, simply pull the microgreens out of the container using a technique that is similar to pulling weeds from your garden, and wash off the growing medium.
I am the author of this website and owner of growyourmicrogreens.com. I am an hobbyist gardener and a passionate scientist. I was trained as a scientist in the Molecular Genetics program in University of Toronto, where I received my Masters of Science and published a journal article.