Name: one-eye-luke US.Vet. Texas (Zone 8a) Quitter's never Win
Some popular cactus and semi-cactus dahlias include
Dahlia 'Doris Day'
Dahlia 'Frigoulet'
Dahlia 'Pianella'
I'm not sure which one it is, but it looks like Doris Day.
NOT A EXPERT! Just a grow worm! I never met a plant I didn’t love.✌