Crowberry Plant Care
Empetrum nigrum subsp. hermaphroditum (Hagerup) Böcher
Updated · Sources · How we source care data
Empetrum nigrum, the crowberry, black crowberry, mossberry, rockberry, or, in western Alaska, Labrador, etc., blackberry, is a flowering plant species in the heather family Ericaceae with a near circumboreal distribution in the Northern Hemisphere. The scientific name of the plant comes from the combination of the Greek for 'upon a rock' and the Latin for black.
Every 7–10 days
Full sun to partial shade
50–70°F
40–60%
At a glance
How do you care for Crowberry?
Plant Crowberry in full sun to partial shade (USDA zones 12a) and water a young shrub every 7–10 days until it is established. It tolerates temperatures of 50–70°F (10–21°C).
What Is the Crowberry?
Crowberry (Empetrum nigrum subsp. hermaphroditum) belongs to the Ericaceae family within the Empetrum genus. Crowberry is also known as Black Crowberry, Heath Crowberry.
Crowberry displays a low spreading shrub growth habit, reaching up to 1 ft tall with a spread of approximately 2 ft. Crowberry produces small, urn-shaped flowers in shades of red, purple, or green.
Leaf size: approximately 1.5 inches.
How Often Should You Water a Crowberry?
Water a young or newly planted Crowberry every 7–10 days, soaking the whole root zone, until it is established — usually one to two growing seasons. Established shrubs mainly need water during long dry spells. In a container, water whenever the top few centimetres of soil are dry.
Watering Frequency
Every 7–10 days
Until established; then in dry spells
What Light Does the Crowberry Need?
Crowberry thrives in full sun to partial shade.
Light Requirement
Full sun to partial shade
What Temperature and Humidity Does the Crowberry Prefer?
Empetrum nigrum subsp. hermaphroditum tolerates temperatures of 50–70°F. Crowberry prefers humidity levels of 40–60%.
Temperature
50–70°F
Humidity
40–60%
What Soil Mix Works Best for a Crowberry?
Well-draining acidic soil with high organic content, such as peat moss and sand. Good drainage is essential for Crowberry to prevent waterlogging, which leads to root rot and fungal issues.
Where Should You Plant a Crowberry?
Choose a spot with full sun to partial shade and well-draining acidic soil with high organic content, such as peat moss and sand. Avoid low spots where water collects after rain.
Crowberry is suited to USDA Zone 12a.
Plant container-grown or balled-and-burlapped shrubs in spring or early autumn, setting the root flare at soil level, and water well after planting.
How Far Apart Should You Plant a Crowberry?
Crowberry can spread to about 2 ft (0.6 m) and reach about 1 ft (0 m) tall. Space plants about 2 ft (0.6 m) apart so mature crowns don't crowd each other, and plant at least half that distance from buildings, fences and paths.
Planning a row or hedge? Try the plant spacing calculator.
How Do You Prune a Crowberry?
Prune Crowberry while it is dormant in late winter: first remove dead, damaged and crossing branches, then thin lightly for shape.
If it flowers in spring, prune right after flowering instead so you don't remove next year's buds. Never take off more than about a quarter of the shrub in one year.
How Do You Care for a Crowberry in Winter?
Crowberry is frost-tender (hardy to USDA zone 12). In colder areas grow it in a container and move it to a bright, frost-free place before the first frost.
How Do You Propagate a Crowberry?
Crowberry can be propagated through seeds, division of clumps. Similar propagation techniques also apply to black crowberry plant care, which shares the same genus.
Is the Crowberry Toxic to Pets and Children?
Pet safety not verified
The ASPCA does not list Crowberry, so we can't confirm whether it is safe for cats and dogs. Keep pets from chewing it as a precaution.
This is a general caution, not veterinary or medical advice. If your pet ate a plant, contact your vet or animal poison control.
See all plants toxic to cats and plants toxic to dogs.
What Pests and Diseases Affect the Crowberry?
Crowberry is susceptible to spider mites, aphids, root rot. Inspect the foliage regularly, especially along leaf undersides and stems. Treat infestations promptly with insecticidal soap or neem oil to prevent spread.
Yellow leaves, brown tips or drooping? See common plant problems and how to fix them.
What USDA Hardiness Zone Does the Crowberry Need?
Crowberry grows outdoors in USDA Zone 12a. It survives winters down to planting zone 12a. In cooler regions, grow Crowberry as a houseplant or bring it indoors before the first frost.
Hardiness Zone
Zone 12a
Keep exploring plants
Crowberry is one of many species covered in the complete plant care and identification guide, which groups plants by genus, attribute, and popularity.
It belongs to the Empetrum genus — compare its care with other Empetrum species on PlantoScan.
Empetrum is part of the Ericaceae plant family — browse all Ericaceae genera and species.
Crowberry thrives in bright light and direct sun — see other bright-light plants.
Related Plant Care Guides
Closely related plants with similar care requirements:
Sources
- Scientific name & taxonomy: Empetrum nigrum subsp. hermaphroditum (Hagerup) Böcher, family Ericaceae (first published in Meddel. Grønland 147(9): 81 (1952)) — World Flora Online record, IPNI name record.
- Pet toxicity: Pet safety not verified: the ASPCA does not list Crowberry, so we can't confirm whether it is safe for cats and dogs. Checked against the ASPCA plant list; any other toxicity note on this page comes from PlantoScan's plant database.
- Hardiness zone: USDA Zone 12a, calculated from the plant's minimum temperature.
- Care values(watering, light, temperature, humidity, soil, fertilizing): PlantoScan's plant database, filtered by automatic plausibility checks — values that fail them are hidden. How we source and check plant data.
Spotted a mistake? Email info@upvision.media with the page link — we check and correct reported errors.
