OMG this is THE best "basic planting" video on yt...ive been searching everywhere because i am a total noob and didnt know what to put in the hole with the plant...now i know you dont have to put any fertilizer or mulch in there lol (see i dont know anything about gardening). So glad i watched this!!
Do not Box cut he was doing it right the 1st time. only tease the roots loose Starting from the bottom and loosening anything that's going round in round in circles do not cut from top to bottom through your entire route ball you might need those routes in fact you do
That would be best. You'll want to find what their mature size will be and leave that amount of space between them, unless you plan on moving them later on after they begin to crowd (not recommended)!
My guess, idea to encourage roots to develop more aggressively into soil in seek of nutrients which in long run will lets plant be more resilient. With nutrients readily available around the crown right after planting will direct roots to stay where they are as that area is more saturated with them.