Landscape area in front of low retaining wall ?

I would mix it up. Some flowering bushes. A few perennial plants, and mix in some annual flowers.

I prefer a more natural look (not everything evenly spaced and matching). Some flowers to add color would be nice also. In Oregon sunflowers do well and the birds love the seeds.

But if you want to be different and are not in a hurry consider something like camellia. I have two out front both produce beautiful red blooms every winter. Love to have something blooming in the dead of winter.

I would like it 'mixed up' a bit. Shrubs and perennials are less work, but some annuals would give you pops of color.

I'm very partial to azaleas. You could go with a single color or a variety. I think both are lovely.

Take a visit to your local nursery and see what they suggest. Another thought is to consult master gardeners through your cooperative extension.

You've got lots of space there to work with. If you put the bushes in a row parallel with the retaining wall, they won't make much of an impact as IMO they will be overshadowed by the height and the presence of the wall.

I would suggest instead to place the bushes in a semi-circle, extending the sides out and farther away from the wall.

In my experience, folks plant too much way too close to building foundations and walls. If you do decide to plant, be sure to leave at least one body width of walking space between the plant and the wall.

I would also recommend that you put down landscaping fabric and mulch around the bushes/plants. This will help keep the weeds down and result in lower maintenance for the yard.

A good garden centre should be your destination. They can show you what to buy to give all year round interest!

I think some bushes and flowers would be nice. I like perineals because I hate to spend mony on annuals which will die,

I'd contact the County Extension Agent in your area and they can provide you information about what will grow best for your specific soil, shade, rainfall, etc. A Master Gardener in your area might also be able to assist with designing the plants in a way that is pleasig and will last long term to accent your home and add to its value.

you can usually get free estimates from local nurserys to find out what to plant for your area and the amount of sun or shade you get- they won't draw up plans without charging but they can come out and tell you what you could do - also you can go to a local nursery with photos and ask there and they will help you out - camellia bushes are nice and give color and are green year round you can get those that are low growing and tall ones as well in a variety of colors

We have sloping in our front yard also. Hubby filled in and added a retaining wall so much more of our yard in now flat and more usable. He did it all by hand it took almost a year to do the entire job but it was well worth it.

Now have a area with pavers, all level and a fire pit and seating also.

Azaleas would be nice they come in diffrent colors and when there not flowering they are green bushes

A few Spirea bushes would look very pretty there. You could plant bulbs in front of them for even more spring color. Daffodils, maybe some Lily of the Valley?

There's a good list of possibilities here:

https://countrylivinginacariboovalley.com/planting-fall-bulbs-for-spring-flowers/

You might install a trellis over it and plant vines of some sort. Morning glories (which reseed themselves) might look great.