native permiculture seedling tree soil mix start recipe that stiays stuck together well. sowing seeds in 4″ x 14″ tall tree pots

the soil mix that i put together based off stuff i had on hand that i think will make a good tree seedling soil that stays stuck together well. starting pawpaw. redbud, locust, persimmon etc seedlings and when starting pawpaws in past in the 4″x4″x14″ extra tall tree pots when transplanting the soil falls off the taproot and i lost a few seedlings possible or they got too cold in the winter prior. looking for organic amendments that help soil stick together well

my soil mix currently (with what i have):

1 part peatmoss

1/2 part coco chips( square chips of cut up coconuts)

1/2 part of innoculated bio-char , humic/ fulvic mix, rock dust blend- granite dust, gypsum powder, calphos, basalt dust,zeolite powder, wollastonite, greensand, diatomaceous earth w/ bentonite clay, kelp meal ,sea90 & mycorrhizae soluble maxx ( which is 19 strains of ecto/endo and bacteria and organic fertilizer

1/2 part- 50% compost -50% homemade worm castings 50/50 mix

1/2 part -50/50 mix of vermiculite & perlite & or pumice

any other organic amendments that you think will help , i think this will work but figured id post it to help others in same boat, bc i know reddit has helped me in past

thanks, Lebowski