Learn How to Grow Radish Microgreens! Radish microgreens are quick and easy to grow in soil or hydroponic growing mediums. Get started today with these easy step-by-step instructions. Step 1 - Spread your soil or hydrate a hydroponic growing medium. Step 2 - Spread 20-30 g (2-3 Tbsp) of radish seeds. Step 3 - Cover for 2-3 days during germination. *Adding weight is optional. Weight can help with even germination and stronger stems. Watering - After the germination period we recommend bottom wate