My dahlia leaves are curling up why?

Question

There in a pot SEMO doing good but a lot of them are starting to do this curl up

Answer 1

Make sure you are watering adequately; potted plant will need daily watering even twice a day during hot days.

https://www.gardeningknowhow.com/ornamental/bulbs/dahlia/grow-dahlias-in-containers.htm

https://www.gardeningknowhow.com/ornamental/bulbs/dahlia/dahlia-pests-and-diseases.htm