Quote Originally Posted by maxsuperdanks
My family keeps a compost heap in our back yard.

We also dump ashes from our fire pit in there (phosphates will be good for flowering)

I'll be using black dirt, when fishing season comes around I'll buy some worms and try to get some worm castings.

Pearlite, peat moss and some sand will go in there too. I might put some saw dust in there too.

I'm thinking of planting them in 1 big container, and putting each sprout in it's own separate coffee can with the bottom cut out.
Compost can cause problems (most notably pests) indoors.
Ashes change the pH of the soil and make it sticky and hard to work with.
Fishing worms and compost worms are not the same, and a source of disease-free worm castings (=commercially packaged) is safer indoors.
Peat moss has a VERY low pH and needs to be limed.
Sand isn't desirable. Go with extra perlite.
Raw sawdust leads to nitrogen problems.
Coffee cans are going to release iron oxide into the soil and lock out other nutrients. Never use metal in an indoor grow.