The needles on my Black Pine have begun to turn yellow. I have fertilized and sprayed with fungicide regularly. I was concerned so I asked Uncle Pete for his thoughts. He suggested that I look at the roots.
This tree is growing out of a hole in the bottom of a grow tray. To get it out I have to destroy the tray. So I got my rotary tool and cut away a section of the tray.
As you can see the rootball is intact however there are no signs of roots.
I was surprised to find this tree has so few roots. It is amazing that it has grown so well in the past 3 years.
Instead of putting the tree back in the grow tray I planted it in a bonsai pot. It is early to choose a front but this is probably my choice.
A view from the other side.
I soaked the tree in a B1 solution for 15 minutes and then set it in the shade.
I will monitor this tree closely and if all goes well I will begin fertilizing in a few weeks.