You don't have a location listed in your profile and I'm not sure what you mean by area 7. If you are referring to USDA Hardiness Zone 7: https://garden.org/nga/zipzone... Nerium oleander will not survive winters if planted in the ground in that zone; they are only hardy in zones 9 and higher.
~ I'm an old gal who still loves playing in the dirt!
~ Playing in the dirt is my therapy ... and I'm in therapy a lot!