I am finding Verbena x hybrida invaluable in my garden.
They are sold here, in the local market or Garden Centers, in various colours and all unlabelled.
They grow all around and through the other plants without (so far) overwhelming them.
They seem to flower most of the time and in profusion.
I was expecting to grow plants like Diascias and Nemesias to fill the spaces between the shrubs and larger perennials, but they don't like it here. Most of them, die a slow death.
However the Verbena x hybrida fill that role with pizazz.
Daisy
With Salvia scabra
One of the Tapien series, here with Calamintha nepetoides and a stray flower of Achillea millefolium Cerise Queen.
In between an Arctotis x hybrida Flame and a purple sage.
Behind Nelumbo nucifera Mrs Perry D. Slocum
Daisy