Thanks for your post and for your interest @iceman
It’s not really permaculture when including the light and electricity that goes into it, but I’m applying some of the basic permaculture principles indoors yes.
As for companion plants, it’s an endless galaxy of combinations, but here’s a good start: List Of Companion Plants For Quality Cannabis - Royal Queen Seeds
I discovered that my method doesn’t need nitrogen fixing cover crops, they self terminated so I assume there’s plenty of nitrogen coming from the many roly polies.
The stuff that looks like clover is actually woodsorrel, a good indicator plant with very shallow roots that dies back before anything else when the soil is too dry. It’s like a visual cue to give more water.
I have basil, pepper plants, date palm and nettle going on at the moment and it all seems to work together fine, but I’m not sure about the nettle, I think I’ll cut it back completely.
I would like some chamomille in there at some point when I can find seeds.
As for soil just grab a bag of certified organic potting soil and add a handful of kitchenscraps, tree leaves, grass clipppings for every 10 liters / (3-4 gallons?).
Mix it all up, and remix and fluff it up every other day, for about a month, making sure it stays moist, when you grab a handful of soil and make a fist, if only one drop of water comes out, that’s perfect.
Keep it covered while it’s “cooking”, this means there’s lots of microbial activity going on, too much for sowing in.
Then after a month you can put it in a no-till fabric bed or fabric pots, and stack them with smaller plastic pots or put short wide tubes in them to sow in, using all the same soil.
And the same day you can add topdressing to the outer rings, more kitchenscraps, grass clippings and tree leaves, and “weeds” like nettle, dandelion, thistle, etc.
And just keep doing that as it sinks into the soil.
That’s all, pretty simple.
Water from the bottom always, never top water the outer ring, only top water the seeds once then wait a few days to a week. Once they are sprouting no more top watering.
You will always lose some sprouts growing organic, it is what it is, don’t sweat it and make your own seeds, just do one run where you keep both males and females alive and you’ll have hundreds of seeds for years to come. (And to hand out if you wish.)
I run perpetual 12/12 light which keeps plants from growing out of control, saves electricity and gives you harvests more often in the long term.