Yeah I do multiple plants in my beds. The "weeds" at the bottom are a cover crop, mostly legumes. Clover in particular is an excellent nitrogen fixer. I grow in a 50 gallon living soil bed with as many as 5 plants in there.
The benefit to doing multiple plants per bed is so the plants can communicate and share nutrients, Tad Hussey talks about it in a really informative podcast but basically it measurably helps with a lot of things including pest and disease resistance.
In fairness I suppose all of our soil is filled with weeds 😂 clover is a really good cover crop for cannabis, and by keeping living plants in there between cycles it keeps the microbiome in the soil alive.
Clover isn’t a weed necessarily… a weed is an undesired plant.
Clover (I use it as companion ground cover with Kentucky Blue grass) provides nitrogen to the soil and provides shade so the ground doesn’t dry out so fast.
That looks like a 50 gallon pot in a 3x3. With smaller pots you don’t do multiple plants since the roots will compete with each other. In this scenario there is ample room for multiple roots and companion crops can provide synergy between plants. Clover returns nitrogen to the soil for example.
I was doing one plant per in 5 gallon fabric pots when I first started and I might go back to that now I know what I'm doing, but I'm trying to mimic the ground as much as I can and the huge pot thing has been working for me