Moss Heather Plant Care
Cassiope lycopodioides D.Don
Updated · Sources · How we source care data
Cassiope lycopodioides is a plant species in the family Ericaceae, known by the common names clubmoss mountain-heather or Haida Gwaii mountain-heather. The species is native to northeast Asia and northwestern North America, where it grows on rocky slopes and crevices in arctic tundra and alpine tundra at elevations up to 2000 m.
Every 7–14 days
Partial to full shade
40–70°F
50–70%
At a glance
How do you care for Moss Heather?
Plant Moss Heather in partial to full shade (USDA zones 11a) and water a young shrub every 7–14 days until it is established. It tolerates temperatures of 40–70°F (4–21°C). Fertilize it every 8 months during the growing season.
Where Is the Moss Heather Native To?
What Is the Moss Heather?
Moss Heather (Cassiope lycopodioides) belongs to the Ericaceae family within the Cassiope genus. Moss Heather is native to northeast Asia and northwestern North America. Moss Heather is also known as Heath.
Moss Heather displays a low mat-forming shrub growth habit, reaching up to 0.5 ft tall with a spread of approximately 1 ft. Moss Heather produces bell-shaped white or pink flowers in clusters.
Leaf size: approximately 0.5 inches.
How Often Should You Water a Moss Heather?
Water a young or newly planted Moss Heather every 7–14 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 7–14 days
Until established; then in dry spells
What Light Does the Moss Heather Need?
Moss Heather thrives in partial to full shade. The optimal light range is 100–500 lux. Avoid placing Moss Heather in direct, harsh sunlight for extended periods, as this can scorch the foliage.
Light Requirement
Partial to full shade
100–500 lux
What Temperature and Humidity Does the Moss Heather Prefer?
Cassiope lycopodioides tolerates temperatures of 40–70°F. Moss Heather prefers humidity levels of 50–70%. A pebble tray or humidifier helps maintain adequate moisture around the plant.
Temperature
40–70°F
Humidity
50–70%
What Soil Mix Works Best for a Moss Heather?
Well-draining acidic soil with high organic matter, such as peat moss and pine bark. Good drainage is essential for Moss Heather to prevent waterlogging, which leads to root rot and fungal issues.
How Often Should You Fertilize a Moss Heather?
Feed Moss Heather every 8 months during the growing season with a balanced, slow-release fertilizer at the rate on the label. Established shrubs in good soil often need little extra feeding, so let weak growth or pale foliage guide you.
Stop feeding by late summer so new growth can harden before winter.
Fertilizing
Every 8 months
During the growing season
The PlantoScan app can remind you when to water and when to fertilize each plant.
Where Should You Plant a Moss Heather?
Choose a spot with partial to full shade and well-draining acidic soil with high organic matter, such as peat moss and pine bark. Avoid low spots where water collects after rain.
Moss Heather is suited to USDA Zone 11a.
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 Moss Heather?
Moss Heather can spread to about 1 ft (0.3 m) and reach about 1 ft (0 m) tall. Space plants about 1 ft (0.3 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 Moss Heather?
Prune Moss Heather 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 Moss Heather in Winter?
Moss Heather is frost-tender (hardy to USDA zone 11). 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 Moss Heather?
Moss Heather can be propagated through seeds, division of clumps. Similar propagation techniques also apply to alpine heather plant care, which shares the same genus.
Is the Moss Heather Toxic to Pets and Children?
Pet safety not verified
The ASPCA does not list Moss Heather, 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 Moss Heather?
Moss Heather is susceptible to spider mites, aphids, scale insects. 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 Moss Heather Need?
Moss Heather grows outdoors in USDA Zone 11a. It survives winters down to planting zone 11a. Moss Heather is native to northeast Asia and northwestern North America. In cooler regions, grow Moss Heather as a houseplant or bring it indoors before the first frost.
Hardiness Zone
Zone 11a
Keep exploring plants
Moss Heather 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 Cassiope genus — compare its care with other Cassiope species on PlantoScan.
Cassiope is part of the Ericaceae plant family — browse all Ericaceae genera and species.
Moss Heather copes with lower light than most plants — browse the full list of low-light plants.
Related Plant Care Guides
Closely related plants with similar care requirements:
Sources
- Scientific name & taxonomy: Cassiope lycopodioides D.Don, family Ericaceae (first published in Edinburgh New Philos. J. 17: 158 (1834)) — World Flora Online record, IPNI name record.
- Pet toxicity: Pet safety not verified: the ASPCA does not list Moss Heather, 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 11a, 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.
