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Northern Starflower

Lysimachia borealis

Also listed as Trientalis borealis, Trientalis americana

Also known as Starflower, American Starflower

herbaceousβ›… part shadeπŸ’§πŸ’§ moderate water❄ Hardy: Zone 2a – Zone 6b

Climate Match for your location

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A low-growing woodland perennial with delicate white or pale pink star-shaped flowers blooming in early summer. It spreads slowly to form a charming groundcover in shaded forest settings.

Why grow it

Northern starflower occupies a narrow niche as a low groundcover for dense shade and moist woodland soils where many alternatives struggle. Unlike more vigorous woodland spreaders, its slow growth habit makes it suitable for gardeners seeking gradual, controlled colonization of forest understory without aggressive expansion. It offers early-season interest through delicate flowers and provides living mulch that suppresses weeds while preserving the open character of shade gardens.

Watch out for

This species prefers consistently moist soil and may decline in dry shade or poorly drained conditions. Its slow spread means establishing visible coverage requires patience and initial planting density. Because it colonizes gradually, new plantings benefit from regular weeding around young plants until the groundcover thickens.

Overview

Form
Spreading
Growth Rate
moderate
Size
0.25–0.5β€² tall Γ— 1–2β€² wide
Dormancy
deciduous
Family
Primulaceae
Pollinators & beneficial insects

Native to the United States

Native Range

Northern North America

Native to: Connecticut, Illinois, Indiana, Kentucky, Massachusetts, Maryland, Maine, Michigan, Minnesota, North Carolina, New Hampshire, New Jersey, New York, Ohio, Pennsylvania, Rhode Island, Tennessee, Virginia, Vermont, Wisconsin, West Virginia

Seasonality

Bloom Season

J
F
M
A
M
J
J
A
S
O
N
D

Season of Interest

SpringSummer

Similar ground covers you might consider:

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Companion Planting

Plants well with