Q.Yellow evening primrose
Hi…I have 2 questions……is the primrose deer proof and does it do well in the winter with cold to freezing temperatures?

Certified GKH Gardening Expert
These will do well in hardiness zones 7-9. If you are outside of these limits, then I would consider keeping them as inside plants.
As far as deer resistance... Even if it is deer resistant... I have learned, that deer will eat anything, unfortunately.
Here is an article on the primrose: https://www.gardeningknowhow.com/ornamental/flowers/primrose/growing-primrose-primrose-plants-in-your-garden.htm