How do I draw my plot?

In Garden Plan, under Plot drawing: set the plot size, add a tree, house, pond and so on with the buttons, and drag them where they really are. Add beds with «▭ Bed» and stretch them by the small squares on their edges. Click a bed to choose its shape, soil and moisture, copy it (Ctrl+C, Ctrl+V) or delete it. The drawing works out the shade and each bed's hours of sun.