Manure in outdoor pots.

Iam growing most plants into the ground, i prepare tthe ground with digging deep and mixing manure pellets, perlite and sassped horn into, then i let is sit for weeks ( let it cook) then i dig again and mix it well again, then i plant my darlings inside My soilmix is light preferrtilised, so i dont use the manure in the soil, or i add it aafter 4-5 week i disslove the manure in water and water the plants withh it i take on hand full of pellets for 1o l of water, ( i measured once the ec) its apowerful stuff!!

in a10 gallon pot i would take 2 hands full of manure

manure is ahot stuff, but you said its from last year.... iam using manure pellets, and i can take ahandfull pellets for a20 l bag i never used " natrural Manure"... and i would add it after seedlingsstage, after 4 weeks or so. before they dont have big need in nitrogen