Enjoying your site , loads of info there..the case studies are superb. You must take notes on work done..? A very comprehensive article on Mycorrhiza, an important factor when growing potted plants with soiless mix.
love the posted pine....maybe a 'lil thining in the apex
with a shallower pot?..not smaller though.
a note concerning your lanky pine...
i love the tree and rock .. good composition ..
but.. it feels like it's fallin out of the pot to the right.
I did a virtual moving current pot over and it was to small.
So, I did a rough sketch .. thoughts
