What does he grow with? What kind of microgreens a...

Clovers are known for their ability to fix nitrogen from the atmosphere, turning it into a usable form for plant growth. This process, known as biological nitrogen fixation, is facilitated by symbiotic bacteria called Rhizobia that live in nodules on the clover's roots. Rhizobia bacteria establish a symbiotic relationship with clover, where the bacteria receive carbohydrates from the plant and in return, fix nitrogen. Clover plants can fix a significant amount of nitrogen from the atmosphere, potentially reducing the need for synthetic nitrogen fertilizers. A vigorous stand of white clover, for example, can fix 100-220 kg of nitrogen per hectare per year. Crimson clover can fix up to 150 pounds of nitrogen per acre. Beneficial on large scale, not so much indoors, but 99.9% of insects will always choose a tasty clover to chow on first before a rigid cannabis plant, no losing.

Hey there it looks like some kinda clover I assume it’s there to help keep the temps down on the soil Also the extra small plants help dry out the soil a little quicker Also it’s very possible it’s something like mint or marigolds that keep pest away there are certin types of plants that buds don’t like the smell ect. And they stay away when you plant them

Those slap cuts make it impossible for my eyes to even try to determine what he is using... but in general this is more for (1) outdoor folks (2) a try-hard way for mulch/moisture control (3) living soil folks who are gonna be reusing soil for substantial number of cycles where you need to think of 5 cycles down the road or (4) growing for hormones (like alphalpha next to your plants is proven to give your plants the t hormone from the alphalpha).

Basil (or Basilikum) can actually work pretty well as a companion plant, some pests avoid it. I used to grow it with tomatoes and weed out on the balcony, and back then I had pest problems in the tent, but not on the balcony. No idea if it was the basil or just luck, but the outdoor plants with basil didn’t get hit. Totally anecdotal, but worth trying if you’re dealing with annoying bugs.