John Innes?

[Funky Trichomes]

So basically heard good things about John Innes and its cheap so win win! Obviously the beans will go straight in the final pot so how would I make the medium so it supplies enough nutes for a decent amount of time but doesn't burn the beans?



I was thinking a little bit of Westland seedling compost on top then John innes 1 then 2 under that? Or should I add some westlands mp compost in there aswell?



No clue anyone got an idea!



Thanks!