The WIldflower Garden at the Chicago Botanic Garden

Lorna and I are visiting other gardens to steal ideas that we can use at the PGT. Last weekend we visited the Chicago Botanic Garden. The wildflower area shown above is very neat and manicured. Nature tends toward messiness and clutter.

How neat should the PGT be?
At this point we are thinking of having the areas along the main trail be neat and have that drift back gradually to the natural messiness of nature.