Wildflowers & Berries Active during the day

bog cranberry

Vaccinium oxycoccos

iNaturalist Wikipedia

A tiny but mighty survivor of the northern wetlands, the bog cranberry paints acidic peatlands with delicate pink blooms and iconic tart red fruit.

0 Sightings

0 Habitats

Quick Identification

straighten

Size

Prostrate stems 10–20 cm (4–8 in) long; berries 6–12 mm (0.2–0.5 in) in diameter

palette

Colors

Bright red berries, deep pink to rose-colored flowers, dark green evergreen leaves with silvery undersides

visibility

Key Features

Creeping, wiry stems that trail across moss
Tiny, pointed evergreen leaves with edges rolled inward
Flowers with four strongly reflexed (peeled back) pink petals
Small, tart red berries often speckled when young

When You’ll See Them

schedule

Activity pattern Active during the day

brightness_5

Peak hours Daylight hours for flowering and berry ripening

calendar_month

Season August–October (fruit); June–July (flowers)

restaurant

Diet Photosynthetic; requires acidic, nutrient-poor soil (pH 3.0–5.0) and high moisture, typically in sphagnum moss beds.

park

Habitat Sphagnum bogs, acidic peatlands, fens, and occasionally damp coniferous forest edges.

Behavior

The bog cranberry is a resilient, low-growing evergreen shrub that spends its life hugging the damp, acidic surfaces of peat bogs. Unlike many garden plants, it has a symbiotic relationship with mycorrhizal fungi, which help it absorb nutrients in the nitrogen-poor, waterlogged soils where it thrives. It grows slowly, spreading via thin, woody runners that weave through cushions of sphagnum moss.

During the late spring and early summer, the bog cranberry produces delicate, nodding flowers that resemble the head and neck of a crane—the origin of the name 'crane-berry.' These flowers are primarily pollinated by bumblebees and other hardy insects capable of 'buzz pollination.' Once pollinated, the plant focuses its energy on developing its signature tart fruit, which remains on the vine well into winter, providing a vital late-season food source for various wildlife.

For humans, the bog cranberry is a seasonal treasure. While the berries are quite acidic and tart when raw, they become sweeter after the first frost breaks down some of the complex starches. Because they grow in fragile bog ecosystems, they are often overlooked by casual hikers, but they play a critical role in the biodiversity of northern wetlands.

photo_camera EverydayEarth exclusive

Camera Tips

Capturing the bog cranberry on a backyard or trail camera requires a 'macro' mindset. Because these plants grow only a few inches off the ground, you should mount your camera on a low-profile stake or even a flat stone directly at moss level. Aim the lens horizontally across the top of the sphagnum moss to capture the profile of the nodding pink flowers or the clusters of bright red berries. A downward-angled shot can also work well to show the 'carpet' effect of the vines.

If you are using an AI-powered camera to detect wildlife interacting with the plant, place your setup near a healthy patch of berries in late autumn. This is when you are most likely to film birds like grouse, cedar waxwings, or even small mammals like voles and mice foraging on the fruit. The red of the berries provides a high-contrast trigger for many motion sensors, especially against the brown or green background of a bog.

For the best visual results, focus on the 'Golden Hour' (shortly after sunrise or before sunset). The low sun angle highlights the dew on the berries and the delicate texture of the evergreen leaves. If your camera has a time-lapse mode, bog cranberries are excellent subjects for a multi-month project; start in June to capture the blooming flowers and continue through the first frost to see the berries turn from pale green to deep, ruby red.

Be mindful of the environment when placing your camera. Bogs are incredibly fragile ecosystems; avoid trampling the moss around the plants. Use a wide-angle lens if possible to capture the cranberry in its wider habitat, which often includes carnivorous plants like pitcher plants or sundews that share the same acidic conditions.

Similar Species

Species that look similar or are commonly confused with bog cranberry.

Large Cranberry

Has larger, elliptical leaves with rounded tips and much larger fruit (up to 20mm).

Lingonberry

Features bell-shaped flowers rather than reflexed petals, and the leaves lack the silvery underside and rolled edges.

Browse all Wildflowers & Berries arrow_forward

Frequently Asked Questions

Bog cranberry berries typically ripen in late August through September, but they are often at their best for foraging after the first frost in October or November, which helps sweeten their tart flavor.

To attract wildlife to bog cranberry, you must provide the specific acidic, bog-like conditions it needs to fruit. Once established, the berries will naturally attract birds like American Robins and small mammals looking for winter forage.

As plants, they don't 'eat' in the traditional sense, but they require very acidic soil and have a special relationship with fungi to help them extract nitrogen and phosphorus from nutrient-poor peat.

They are rarely found in typical suburban gardens unless you have a specialized bog garden. They are high-specialists that require constant moisture and very low soil pH, which is uncommon in standard landscaping.

Bog cranberry (V. oxycoccos) has smaller, more pointed leaves with edges that roll under and smaller fruit. The 'Large Cranberry' (V. macrocarpon) has larger, blunter leaves and significantly larger berries.

Record bog cranberry at your habitat

Connect a camera to start building your own species record — AI identifies every visitor automatically.

Join free Identify a photo