By planting fruit trees adjacent to the wood border, it is possible to grow as many as 18 fruit trees inside the greenhouse. One possible optimal placement is displayed in the image that follows. Note that the two left sprinklers should not be added until the adjacent fruit trees have fully grown. | By planting fruit trees adjacent to the wood border, it is possible to grow as many as 18 fruit trees inside the greenhouse. One possible optimal placement is displayed in the image that follows. Note that the two left sprinklers should not be added until the adjacent fruit trees have fully grown. |