Fruit trees in greenhouse need 5x5 space?!?!?!

[Monkey Luu]

Hey Farmers,

i want to plant fruit trees and fruit plants in my greenhouse. I know that the plants need a 2x2 space and the trees need 3x3.
I designed on that information a layout but now I have that issue that my fruit trees need a 5x5 space. I need 2 spaces to the edge of greenhouse and between trees 4!! spaces

Anyone with the same issue?!

[Piperbird]

Yes, trees don't like to touch a border. Same as out on your farm. They only need a 3x3, but not next to a border.