What direction does it face? Bats like it warm. BTW, the smearing of guano thing is urban legend which seems to have come from sales folks.
Is your site urban, suburban, rural?
Always looking for interesting plants for pollinators and food! Bonus points for highly, and pleasantly scented plants.
"Si hortum in bibliotheca habes, nihil deerit." [“If you have a garden and a library, you have everything you need.”] -- Marcus Tullius Cicero in Ad Familiares IX, 4, to Varro. 46 BCE