Vast and varied group (about 300 species) encompassing trailers, creeping or tufted miniature perennials, and erect kinds 1 to 6 ft. high or taller. Usually, flower stalks rise above basal leaf rosettes; basal leaves often differ from stem leaves. The perennial species tend to spread indefinitely from the root; width depends mainly on vigor of their rootstocks and time they have been in one spot. Flowers are generally bell shaped, though some are star shaped, cupped, or round and flat. Bloom comes at some time from spring to fall, depending on species. Most species are grown fairly easily from seeds sown in spring or early summer.Campanula takesimana
Native to much of the northern hemisphere. Flat, basal rosette spreads vigorously by underground runners, forms dense, weed-suppressing mat of rounded glossy leaves. Flowers are 2-in., pendent, pale lilac bells, spotted maroon inside. Early summer.
Native to much of the northern hemisphere. Flat, basal rosette spreads vigorously by underground runne...
Midseason to late. Full white plumes to 3 ft. tall.
Most astilbes sold belong to this hybrid group or are sold as such. Parentage is complex, but plants o...