Final Charrette 
Pass through the gates and into an alee of trees to reinforce the formal entrance and emphasis the definition of an arboretum:  a place with a variety of woody plants, cultivated for exhibition and education. 
Position the artistic, stenciled metal sign so that it is visible as soon as you enter as a reminder of the art once housed in the gallery building, set the tone for the unique specimens to be viewed, and draw the visitor forward.
Establish a perimeter walk to connect the two sides of the driveway.
Keep the perennials in the formal garden and the herbs in the medicinal garden.