I transplanted some Yellow Sundrops (Oenothera Fruticosa) from my garden into a container on my deck.
I plan to keep them in the container and overwinter them in my unheated garage.
The ones in the garden have been there for years and I do not really touch them.
Should I trim the ones in the container down to the soil to overwinter , or should I just leave them alone?

Regards Brian

I cut mine back to about 6" when they get ratty. Kind of tidies them up, not sure if they need it or not.