Planting directly under the drip line is asking for trouble.
Planting under roof overhangs in shaed.
I ve noticed how dry it is under the eaves now that the gutters are up.
I don t have much use for them but maybe aspidistra cast iron plant.
By moving out from under the overhang there will be much less maintenance work and the plants will love it.
Hi i d leave that area as an access trail for painting etc and either move plants or plant outside the eave perimeter.
Rain snow and ice will damage any plant in.
Rain snow and ice will damage any plant in that location sometimes terminally.
A building or fence that blocks the wind may affect the rain direction in windy storms.
If you plant beneath an overhang be prepared to water these plants throughout the growing season.
Meanwhile house eaves often shelter plants from rain and not in a good way.
A roof overhang can create a band of dry shade near the house.
But i don t think i have as much shade as it looks like you have.
Design the back layer with plants tolerant of full shade.
Plants can provide shade and act as windbreaks.
Planting under evergreens is tough because there s little light and plants have to compete with roots for.
Blocked shade is when a building roof overhang wall or fence keeps out sunlight.
Note too that water cascading off a roof can damage plants below.
When planting under trees keep in mind that tree roots suck up much of the available water and give a fair amount of shade once the leaves fill in.
In addition to providing shade plants can assist cooling by transpiration.
They are 24 plus gutters so about 30 deep.
You could try them they all tolerate a lot of shade.
Tolerating dry shade is not the same as thriving in it.
Fixes for dry shady plantings.
Even if other areas under the overhang receive partial sun for a few hours per day the back row is unlikely to get a significant.
At my house in the sandhills the roof overhang is about the only place that gets enough water to keep the above plants alive.
Notice how the trees and shrubs in this foundation planting are placed beyond the drip line of the overhanging eaves.
You could fill the area with river rock mulch bricks etc.
Deciduous plants allow winter sun through their bare branches and exclude summer sun with their leaves.
Dry shade can even be found under plants.