I see! I use a different mix, approx. 3:1:1:2 (pine bark fines/perlite/potting mix/compost) in my 1 gal pots. The compost is about 1 year old and is well done. I added some to my young in the ground avocado a month ago and it looks like the tree on drugs. It gained about 2 feet since than (on top of 4)! The compost also comes with a heavy load of worms!