Hardy in USDA Zones 4a through 7b, preferring temperate climates.
The most common species in cultivation. It is a compact, clump-forming perennial that typically grows 18 to 24 inches tall and features willow-like, dark green leaves. buphthalmum
Native to northern Italy, this species is noted for its high phenolic content in its roots and shoots. Hardy in USDA Zones 4a through 7b, preferring
Requires even moisture; the soil should be allowed to dry out partially between waterings to prevent root rot. buphthalmum
It is a low-maintenance plant that blooms from early summer through early autumn. Uses and Benefits