Siberian bugloss has large, fuzzy, heart-shaped leaves which support a cloud of tiny true blue flowers in the spring. Often used as a groundcover or naturalized in shady spots.
Siberian bugloss grows 12 to 18 inches high and wide. Clumps slowly spread to form thick groundcover.
Native geographic location and habitat:
This plant is native to Turkey and the Caucasus mountains.
Attracts birds or pollinators:
Butterflies are attracted to the flowers in spring.
Bright green leaves at the base are heart-shaped and fuzzy and up to 8 inches long. Leaves on the stems are smaller. Dark green leaves increase in size over the summer, creating lush mounds.
Clouds of intensely blue, star-shaped flowers appear in April and May above the leaves.
The fruit is not ornamentally significant.
Grow in partial to full shade. Leaves will burn in more sun. Prefers uniformly moist soil, but will tolerate drier soils in a shady location once established. Cut dead leaves or cut to the ground midsummer if the leaves start to decline, as this will encourage a flush of new growth. Reseeds well in moist soil, but mainly at the base of the plant. Divide in spring.
List of pests, diseases, and tolerances:
Siberian bugloss has no serious pests or diseases. The plant may decline mid-summer in dry, hot areas. The fuzzy, leathery leaves are unattractive to rabbits and deer.
Alexanders Great Siberian bugloss (Brunnera macrophylla ‘Alexanders Great’):
A large version of the species, Alexanders Great Siberian bugloss can get up to 3 feet wide. The leaves are silver colored with green venation.
Jack Frost Siberian bugloss (Brunnera macrophylla ‘Jack Frost’):
Silver, heart-shaped leaves have light green veins.
Looking Glass Siberian bugloss (Brunnera macrophylla ‘Looking Glass’):
This cultivar starts with white-silver leaves with thin green veins and gradually loses the color of the veins until the leaf is completely silver-gray.
Sea Heart Siberian bugloss (Brunnera macrophylla ‘Sea Heart’):
This cultivar stays more green along the veins, giving the leaves a two-tone effect. The foliage stands up well to heat and humidity
Silver Heart Siberian bugloss (Brunnera macrophylla ‘Silver Heart’):
Bold white and green leaves create the backdrop for the blue flowers in spring on a compact plant, which only gets about 12 inches tall. Leaves are more scorch resistant than the species.
Variegated Siberian bugloss (Brunnera macrophylla ‘Variegata’):
This older cultivar has wide, irregular white margins on bright green leaves.