Cagary, your area looks nice..will there be any problems when trees mature? W/roots for instance? How wide of a spread is it? How long? How many trees are planted in all?
It really looks nice..
What type of p lants do you have growing in the gh? Toni

Toni,

I don't think there will be any problems with the trees when they mature. I have a few peach trees that were planted "3 in a hole" and they continue to do well year after year. The bed has 18 trees and is about 25 feet long and about 6 feet wide.

I keep the greenhouse at 60 degrees minimum so I can grow many tropicals from fruit trees like Sugar Apples, Soursop and Jakfruit to flowering plants like Heliconia and Ginger. These plants are growing right in the ground, not in pots. There is no real "floor".

Cagary, is sure Apple a type of apple tree?
I think it's a great idea placing plants in the ground, but in my case I prefer taking plants out of gh in summer and placing plants outside..One reason is to save on money, w/o having to use electric all summer long..My gh is nowhere as large as yours but it's still and added expense..and w/the price of gas this winter, every penny helps.
Your trees look really nice set up that way. Sometimes I really wish we lived in a tropical place..LOL..Toni

Toni, I think Sugar Apple is an Annona, related to the Cherimoya.

Stressbaby,

You're right. Its Annona squamosa and it doesn't taste or even look like an apple, but it is delicious if you ever get a chance to try one.

{{gwi:650588}}

Stressbaby, thanks..I've never tasted a Sugar Apple or Chiramoya. It's sure a strange-looking fruit though..Looks like it's very thicked-skinned..Toni

Cagary, I just came across this post and wonder how your trees are doing in the "3 tree to a hole" planting. I am starting out with citrus and have very limited space and thought about doing this as well, to maximize the space I have.