By planting fruit trees along the wall, one avoids any concerns during the growth period over the placement of sprinklers that exist on the wood border. By starting from the north corners and planting as closely as possible towards the water can in the center, a total of six trees can be placed on the north side. Duplicate that technique for the south side for another six trees. Then fill in the east and west with four more trees each, for a total of 20.
Note that players using [[Controls|a controller]] instead of mouse/keyboard have reported difficulty accessing trees in the corners of the Greenhouse.
<gallery mode=packed heights=240px>