Q.Over winter my plant
My Verbena was beautiful this year and it was the first year for it. What do I do to get it ready for winter?
It looks like you are in gardening zone 5b. Perennial verbena cold hardiness varies by the species, but many will do well in 5b while it will be a bit cold for some others. Your plant may benefit from some winter protection:
https://www.gardeningknowhow.com/garden-how-to/mulch/mulching-plants-in-winter.htm
https://www.gardeningknowhow.com/plant-problems/environmental/protecting-plants-winter.htm
Other Verbenas are annual and won't survive the winter in any case.