

Low bush blueberries could do well there, unless its super steep. They stay low, only get about a foot tall and wide. They have great white flowers in the spring, blue-green foilage in the summer, plus edible fruit native birds love, and gorgeous fall color.
They do like acidic soil, so mulch with pine needles/wood.
You have to get a low bush variety, theres half-hybrids that get 3-4 ft tall, and High bushes that get 6-12 ft tall.
The acidic soil requirements are pretty stringent (PH 4.5-5.5), so I avoid watering with tap water (most tap water is alkaline), and I would test your soil before planting.