Why are vertical farming and microgreens all the rage?
You keep hearing about them but what is driving these frequent discussion pieces? Why are microgreens and vertical farming so en vogue? And what is the driving force behind their constant pairing?
As with most things, it starts further afield of the supply chain. In this case: at water. For better or more likely worse, water is on the path to becoming the gold rush of the 22nd century. And vertical farms use 95% less than traditional farms. PlantLab has some fantastic slides that show the difference between the various methods of farming.
All slides courtesy of PlantLab
As you can see, it’s an astonishing difference. But it doesn’t tell the whole story. You’ll notice the reference to the sun being free energy. Vertical farming is incredibly energy intensive. Artificial lighting to achieve the full spectrum of the Sun’s light requires LED lighting in a controlled environment. And that required a ton of power; after all the sun is a giant fusion ball!
The biggest downside of vertical farms is the large amount of energy it takes to grow crops: between 30-176 kWh per kg more than greenhouses. With that difference in energy, you could run your washing machine approximately 132 times
Another important note is the lack of the traditional necessity of potting mix, top soil, coco, or other growing medium. Vertical farming requires no growing medium, which assuredly reduces the overall carbon footprint of vertical farming versus traditional farming. However, this is a moot point in cases of regenerative farming where soil health is prioritized.
The food production comparison really highlights the trade offs. The food miles transportation comparison is another astonishing difference. Obviously, most people would prefer their food was from 43 miles away as opposed to 1000 to 2000 miles away if for no other reason than a preference for fresher produce.
And that’s where microgreens come into the picture.