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Key characteristics

Family: Apiaceae
Height: 6 to 10 in
Width: 10 to 14 in
Flower color: Small, true flowers are bright yellow and tightly clustered in rounded umbels, surrounded by large, daisy-like variegated cream-white bracts
Foliage color: Glossy, medium green leaves, often with subtle mottling; foliage forms a low, spreading clump
Bloom time: Early to mid spring
Light: Partial shade to full shade
Water: Moderate
Maintenance: Low; remove spent flower stems after bloom to maintain appearance; spreads slowly by self-seeding
Growing zone: USDA zones 5 to 8
Wildlife: Early-season pollinators, including bees and beneficial insects

Groundcovers

Sanicula epipactis 'Thor'

Thor Dwarf Masterwort

Sanicula epipactis 'Thor' produces distinctive spring blooms defined by broad, variegated bracts rather than traditional petals. Each flower head is encircled by green bracts edged and marbled in creamy white, forming a flat, star-like display. At the center sits a dense, rounded cluster of tiny yellow florets. The foliage beneath is deeply lobed and softly textured, complementing the patterned bracts.

Blooming in mid to late spring, 'Thor' originates from a cultivated selection of the European species Saniculaepipactis.

Light

Partial shade to full shade

Water

Moderate

Bloom time

Early to mid spring

Find this plant

Works well in

Woodland Gardens
Borders
Pollinator Gardens
Under Trees

Companion plants

Brunneras · Skimmias · Epimedium · Blechnums · Cyclamen · Hellebores

Design tip

Position this distinctive woodland perennial where its patterned bracts can be admired up close along shaded paths or borders. Layer evergreen shrubs, contrasting foliage, and finely textured companions to create depth, visual rhythm, and a refined spring woodland display.