Valued for clusters of intense blue, phloxlike flowers that bloom in summer to late fall, when cool hues are often especially welcome in the garden. (For pale blue-flowered Cape plumbago, see Plumbago auriculata.) Tolerates inconsistent watering. Shrubby species are usually treated like perennials in colder zones; cut them back after bloom and apply a thick mulch.Ceratostigma griffithii
Himalayan native that grows to 2 1/2–3 ft. high and wide, with roundish, deep green leaves. Even light frost will nip back the growth on this plant. Blue, phlox-like flowers appear in fall.
More open and sprawling than P. aequalis, with loose clusters of orange to red flowers. ...
From Japan. This aggressively running bamboo grows to 4 ft. tall, with 1/2-in. stems. Green leaves hav...
Native to Taiwan. Forms a compact clump to 2 1/2–3 1/2 ft. high and 3–4 ft. wide, with nar...