Evening primroses aren't primroses Shirley. Common names of plants are designed to confuse and they succeed
Primroses are hardy, plant them out.
You can move the plants if they're not where you want them. Otherwise collect the seeds and scatter them where you do want them. You can sow them in pots bit I wouldn't bother, they do OK without help
Don't worry about the thread groups Sparkles, nobody else does. It all turns up on the same page
I agree with Dave re getting it in the ground if you can.
Part of the fun of gardening is that it's never 'once and for all'
Though sometimes I wish just a little bit of it stayed done
I only have Molly the Witch and nothing has attacked her yet. Rabbits are having a good feast on other things though.
Try C sulphureus 'Polidor' , really orange, the bees and I love it
We've never asked what sort of paeony
I think you'll have to wait and see. Herbaceous paeonies put up the leaves, then flower and no follow-up leaves.
Keep your fingers crossed and try to find the culprit as aym suggests
My first thought was Euonymus japonicus
They're might be too wet, I haven't grown these but most things like a watering when they need it then dry out a bit. Constantly wet leaves sounds a recipe for fungal attack
except for the pollinating bit Tetley, I need berries on the female, or my birds do anyway. Might still have to get one though.