The best place to ask is in the Forums. Go to the red Community at the top right of the screen. Click on Forums. Scroll down to Trees and Shrubs. Post new topic with your question. More people will see it there.
Welcome to Garden Guides. I hope you get your answer.
Jun 21, 2012 | 8:16 AM PST
On Hortiscope site I saw this answer : "Unless these trees get generous amounts of sunlight, water and nutrients, chances are they will remain wimpy, thin plants in those respective areas"