Ajuga 'Metallica Crispa' has extremely crinkled and twisted shiny, dark green to maroon leaves. 'Metallica Crispa' Bugleweed is very compact with short spikes of blue flowers in the spring. This slow-growing perennial plant prefers protection from afternoon sun. Ajuga will tolerate conditions ranging from dry to wet. Bugleweed can be grown under black walnut trees and will tolerate clay soil.