DIRT PATH TRICK 

 
 

 

You can use the dirt path to place trees over flowers etc, simply buy a dirt path and place it on the farm you wish to use, (example wanting to place trees over flowers on the same farm. Hide all items except for the trees, reload your farm and move the dirt path to a different place on the farm, plant your trees) easy peasy.
 
For how to use a dirt path when stacking crops using only (1) tab