Roses require vigorous pruning but are otherwise low-maintenance plants. The blooms are lovely, and many modern landscapes rose cultivars are extremely hardy, disease resistant, and attractive. Rosa rugosa is a disease-resistant, stable landscape and native rose that produces large red and pink hips in the fall.Have a look at https://athriftymom.com/thrifty-landscape-idea/ for more info on this.
Wait before you look at perennial options if you felt your edible landscape choices with trees and shrubs were freeing. There is a plethora of perennial edibles available, especially for herb use. Rosemary (mentioned above as a shrub but easily held as a smaller perennial), sage, thyme, oregano, chives, ginger (in warm areas), and lavender are some popular perennial herbs that are perfect for landscapes. While mint is a hardy and aggressive perennial, its tendency to spread does not always make it a good landscape plant. Mint is best kept contained and cultivated in pots. Agastache is a less common but wonderful herb that grows well in the landscape. So is tough Echinacea, with its lovely blooms that now come in a variety of colours other than purple and white. Cheyenne Spirit is a red, orange, coral, purple, and other colour Echinacea blend with long-lasting blooms that brighten up the landscape. Many of these plants’ blooms and leaves can be used in cooking and for a variety of other tasks around the building.
There are several perennial plants that are not herbal but provide vegetable foods. In colder climates, artichoke is a lovely perennial. It’s rare and stately shape makes it an excellent focal point. You’ll eat the artichoke if you harvest the flowers before they bloom. Early in the spring, asparagus, or what we know as asparagus, emerges as a thick spear (the portion we eat), but allowing some of the spears to grow and develop for the rest of the season rewards you with tall and wispy foliage that contrasts and fills in well among other plants. Rhubarb is a large-leaved plant with edible stalks that can be harvested in the early spring.