There are numerous ground cover plants, forming a more or less dense area. Bellflowers display pretty blue, white, pink or purple bells, which illuminate the soil in spring or summer.
The wood forget-me-not is a hardy plant: frosts do not harm it. Periwinkle is resistant, persistent and very honey-producing. Helxine can revegetate the base of trees or shaded areas of neglected areas of your garden. It can replace the most unattractive gaps between stones of a paving stones.