flowerbug
Garden Master
For containers i‘ve previously used a “super soil” of my own making and it will carry the heaviest feeder thru one season.
I don’t know if they (the stoners) were the first to coin that phrase but “super soil” is a quite popular grow method.
The way i went about it was to start with a base potting soil, in my case Roots organic 707. I’d dump 2 or 3 of the big bags on the shop floor before adding a long list of amendments, (which i can produce if there’s interest) and raked it all together, mixing thoroughly. Next i’d shovel my mix into 32 gallon brute containers. (any plastic garbage can works)
At the time i was using 12ea 16 gallon containers so i needed 192 gallons of planting mix / 25 cu.ft./ 6ea 32 gallon cans.
Once the soil was in the cans i’d activate it with roughly 2 gallons of Compost tea and A Gallon of whole milk After which the lid was shut tight. These cans sat out behind the house to cook for 3-5 months and when needed were brought out one at a time.
it’s a lot of work up front but the end product was light years ahead of anything i’ve ever used. The amendment ratio was off the chart and im sure it would fry most stuff if used right away but the cooking, break down period made it safe for anything i used it for.
You can be over whelmed by “the internet scientist” who will jerk you this way or that but don't get discouraged this is DIRT SIMPLE.
another method would be to use open bottom containers and make sure where you place them is decent garden soil so that any leeching may end up being food for later.
our method has been nearly sure fire for the many years i've been gardening here. worm compost put in the hole underneath the plant (about a gallon to a gallon and a half in volume), then i plant the tomato pretty deep so it has a chance in our heat of the mid-summer plus the heavy clay soil. i do not amend or fertilize after this other than what has already been buried in that garden in the previous years. so that's one year.
the next years i do not plant in those same holes or spots, but rotate plant other things through that garden for three or more years. normally i do not have to amend for the beans and peas and the only really super heavy feeders in comparison to the tomatoes is the big onions but they will do ok enough in the 2nd rotation too of worm compost.
i also amend for the sweet red peppers (but not green peppers - they seem to do ok in 2nd or even 3rd year rotation).
but do note that i'm growing these in mostly clay soil and that it holds nutrients pretty well.