It is common practice to apply hatch patterns to projected areas when viewed in Plan view and options are available to apply an Edge Graphic and Fill Pattern to the Area planting when viewed in Plan view.
Select toggle to Include Edge graphic and define a Segment Length as required to create a wavy vegetation edge within the selected area boundary.
Note that the Segment Length defines the size of the wavy vegetation edge and will vary depe4nding on the size and complexity of the planting bed.