Gently water your microgreens once daily by watering the coconut substrate evenly from the edges. Watering directly over top can damage the delicate plants. Only water when the coconut on the edges of the tray turns a light brown colour. You'll only need 5 to 6 tablespoons of water; using too much can drown them. Let the plants be your guide. Microgreens that are falling over are overdue for watering but don't worry, they'll bounce back in a few hours. The water from your faucet is sufficient for the needs of your microgreens. If your faucet watered plants have leaves that are tainted yellow or curl, then you have excess chlorine in your water.
It is safe to eat these, but if the microgreens are given bottled water they will look and taste better. Alternatively you can let the tap water sit in a non metallic container for at least 24 hours to let the chlorine evaporate before watering your greens with it. Microgreens don’t like water that is too cold. They also won’t do well in water that is too warm. The ideal temperature is between 50°- 60°F.
Humidity, Storage, Tempereture, and Light
Your microgreens will do well in average household humidity and temperature. Place them where you have more light. A window on the south side of the house or apartment will do and they will last from 1 to 3 weeks before harvesting (depending on the type).
Gently run your hand over your microgreens to dislodge any seed hulls attached. Use sharp kitchen scissors or a very sharp knife, gently take a small handful and cut them cleanly above the coconut grow medium. Since there is no soil used you can directly consume the microgreens without having to wash them. If however you’re more comfortable rinsing them then do so under a slow-flowing tap. The water should be cool, not cold or hot. You can dry them between a set of kitchen paper towels before serving. Be careful if using a salad spinner as the small leaves may sometimes fall out through the holes. Instead you can put the greens into a paper towel before placing them in the spinner. Never refrigerate of store your harvested microgreens wet. It’ll create a soggy mess and encourage bacteria to grow.
When you’ve finished harvesting the lot you can dispose of everything into the compost bin including the sugarcane based container! Microgreens do not grow back the same if at all. All of the energy in a microgreen seed goes into producing those first few sets of leaves. So once you cut the microgreen, there’s no energy left for it to grow back again.