November 08, 2020 2 min read 0 Comments


 From our How to Grow Microgreens Series

Transcript below has been edited for clarity.

 Nick & Nathan from On the Acre in Houston, TX discuss the topic. 

Watering Microgreens Transcript

Whenever you're watering in microgreens, you can do it obviously from above or below. Most people would recommend, myself included, to always water from underneath. For a couple of reasons. One is you don't want your microgreens to be falling over into the soil and getting stuck there. Because that prolonged contact with the soil will allow the stem to weaken due to being moist which will allow infection in and then your tray will start to die.

I imagine it also helps keep the pests below the leaf level. You don't have water sitting up on your leaves after you water. All of that stays below and our pest control is right above the leaf so those two things kind of help each other out in that way, not to water above. 

What are some other ways people water that you see? 

A lot of people use misters because it is more gentle on the plant. You don’t have to worry about them actually falling over. Once again, water is a fluid and bacteria and mold and fungus can travel through a fluid whereas if you're only watering from the bottom the only thing that's ever getting wet is the soil. So you're never risking that contamination flowing up the plant.

Within your flood trays you have multiple ways you {can water}, flood and drain, continuous flow, you have options within a flood tray.  If you're not doing individuals. I think you just need to know your space, your climate, and your means to determine what's best for you and what you're wanting to grow but you have options within a flood tray. Your medium will determine a lot of that; if you're using coconut coir or soil or hemp pads or rock wool you know the frequency with which you water {will change.} 

Introducing water from above your plants, releasing it into the air increases humidity and you can hit items within your shelving, your lights, your equipment. We talked about our pest controls that are right above our plants also and we hit those kinds of things all the time {when misting.} Our spaces in between our shelves are small. Really not having to go in there for more than you need to helps the plants grow better.