Gentians are prized for their tubular flowers in intense blue shades. Many are considered difficult to grow, but G. asclepiadea needs little more than consistent moisture and humus-rich soil with excellent drainage. Some require lime-free soil, as noted. Well worth the extra care, as they produce some of the richest blues in the garden.
Native to Europe and western Asia. Arching, large-leafed stems form a clump 2–3 ft. tall and 1 1/2 ft. wide. In late summer and early fall, rich, deep blue, 1 1/2-in., trumpet-shaped flowers open into stars atop the stems and among the upper leaves. Thrives in rich, neutral to acidic soil; makes a choice companion for ferns. Partial shade.
From New Zealand. Prostrate, spreading growth to about 6 in. high and 3–4 ft. wide. Heart-shaped...
Ivy is appreciated by some gardeners for its ability to cover quickly, reviled by others—particu...
Grow these South African bulbs for the spikes of tubular, hyacinthlike blossoms that appear at the top...