|Verbean bonareinsis||Verbena tenuisecta|
Generally all verbenas are good nectar plants, the problem is that most are annuals or can’t stand the cold.
In St. Louis, two verbenas that reseed themselves are:
Verbena bonariensis – grows tall.
Verbena tenuisecta – Moss Verbena (only 12″ tall)
I did try Verbena rigida – Sandpaper Verbena – don’t grow this variety – it’s not a good nectar plant and it is invasive via underground runners.