shrubN. America Native

Bog Bilberry

The Story

Plant Bio

Vaccinium uliginosum, known as bog bilberry, is a low-growing, deciduous dwarf shrub native to circumboreal wetland and alpine habitats across the Northern Hemisphere. Unlike related bilberries with angled green stems, this species features round, brown branches clothed in dull blue-green, glaucous leaves with pale, net-like veins underneath.

In late spring, the shrub produces small, nodding, urn-shaped flowers of pale pink, white, or pale red from the previous year's wood, followed by edible blue-black berries. These downward-oriented flowers are adapted to pollination by native bees and butterflies rather than hummingbirds.

Uses & Benefits:

Offers delicate pinkish bell-shaped flowers and attractive blue-green foliage suitable for specialized wet gardens.

Serves as an edible fruit source and an effective ground cover in highly acidic, wet soils where other plants fail.

Provides vital forage for native bees, butterflies like the heath sulphur, and food for mountain game birds.

Essentials

At a Glance

Plant Type

Shrub

Height

30"

Width

40"

Light

Full Sun, Partial Sun

Zones

4, 5, 6, 7

Water

High

Humidity

High

Lifespan

Perennial

Native To

North America, Europe, Asia

Toxicity

Non-toxic

Bloom period

Late spring – Early summer

In flower about 2 months of the year

Planting

How to Grow

Select a planting site in full sun to partial shade that mimics a bog or wet heath environment.
Amend the soil heavily with peat moss or organic matter to achieve a highly acidic pH between 4.0 and 5.0.
Install the plant, ensuring the shallow root system is positioned in a substrate that remains constantly moist but not stagnant.
Apply a thick layer of organic mulch to conserve moisture and protect the shallow roots from drying out.

Pro Tip

Plant in a highly acidic, peaty substrate with constant moisture; attempting to grow this species in standard garden loam with neutral pH or intermittent dry spells causes rapid decline.

Keep It Thriving

Care Guide

Do

Maintain constant soil moisture to prevent the shallow root system from drying out.
Grow in highly acidic, organic-rich, peaty soils.
Prune minimally, removing only dead or crossing branches in late winter.

Don't

Do not plant in standard garden loam with neutral or alkaline pH.
Do not prune heavily into old, leafless wood, as regrowth is slow and patchy.
Do not allow the soil to dry out, as the plant has low drought tolerance.
Do not over-fertilize; apply acidic organic fertilizers sparingly if at all.

Seasonal Care Calendar

Task	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Fertilize
Mulch
Pest Check
Prune

Watch Out For

Pests & Diseases

Common Pests

Common Diseases

In the Garden

Landscape Uses & Companions

Landscape Uses

Bog gardensRain gardensAlpine or rock gardensNative plant restorations

Companion Plants

Kalmia polifolia Rhododendron groenlandicum

Multiply

Propagation Methods

Good to Know

Common Questions

Bog Bilberry questions

What zones can Bog Bilberry grow in?

Bog Bilberry is hardy in USDA Zones 4–7. Inside that range it survives winter in the ground; outside it, grow it as an annual or a container plant you protect.

Is Bog Bilberry deer resistant?

Not reliably. Deer may browse Bog Bilberry, especially tender spring growth — plan on repellents or fencing where pressure is high.

When does Bog Bilberry bloom?

Bog Bilberry typically blooms in late spring through early summer. Exact timing shifts a week or two with your zone — Sow's bloom calendar maps it to your garden.

Does Bog Bilberry need full sun?

Bog Bilberry does best in full sun to part shade. In hot climates, afternoon shade keeps blooms fresher longer.