Hi
BREST is not a warmer place
Hosta seems to need water and shady spot but i don't think hot temperature is a problem.
Jane From "le jardin anglais" grow his hostas and heucheras in the South west of FRANCE.
I 've just spend my saturday afternoon repot my small collection (13) of hostas
and I put them in shady spot below my heptacodium
I put my plantaginea in full sun...no flower since two years !
Venus seems very interesting
I am looking for a book to help my choice.