Woolly Beachheather
hudsonia tomentosa
Woolly Beachheather (Hudsonia tomentosa) is a remarkable, resilient dwarf shrub that thrives in some of North America's most inhospitable environments: shifting sand dunes and barren pine plains. Belonging to the rockrose family (Cistaceae), this low-lying perennial forms expansive, moss-like mats that act as vital ecological anchors, binding loose sands with their extensive root networks and helping to stabilize fragile dune ecosystems against wind erosion. Despite its desert-like habitat, the plant remains evergreen, relying on specialized adaptations to conserve precious moisture. During most of the year, Woolly Beachheather blends quietly into the sandy landscape with its soft, silvery-gray foliage. However, in late spring, it undergoes a stunning transformation. The mats burst into a spectacular display of tiny, vibrant yellow flowers, creating a vivid contrast against the pale sands. These brief but beautiful blooms attract a variety of native pollinators, making this hardy pioneer species not only a crucial physical stabilizer of coastal and lakeside sands but also a vital resource for local biodiversity. To easily track and identify Woolly Beachheather on your next adventure, download the Snappit app.
Habitat: Found in coastal and inland sand dunes, sandy beaches, and pine barrens, where soils are nutrient-poor and highly draining.
Appearance
Woolly Beachheather is a low-growing, highly branched evergreen subshrub forming dense, carpet-like mats up to 30 cm tall. Its tiny, scale-like leaves are needle-like, overlapping closely along the stems, and are heavily covered in a dense, grayish-white coat of woolly hairs (tomentum) that give the entire plant a distinct dusty-green or silvery-gray appearance. In late spring to early summer, the mats transform as they become blanketed in small, bright yellow, five-petaled flowers that open only in direct sunlight.
Category
PlantsRarity
Common
Danger
1/5 ยท Very low
Snaps
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Interesting facts
Despite its name and resemblance to true heathers, Woolly Beachheather actually belongs to the rockrose family (Cistaceae).
Its woolly hairs not only trap moisture but also act as natural sunscreen, reflecting harsh sunlight off the sand.
The plant's flowers open for only a few hours on sunny days, relying on a rapid pollination window.
Special abilities
Tomentose Moisture Barrier
The dense, woolly hairs covering the leaves trap a layer of humid air close to the plant's surface, drastically reducing water loss from transpiration.
Sand-Binding Root System
Its extensive, fibrous root network anchors the plant in shifting sands, helping to stabilize dune structures while securing moisture from deep below.
Solar-Triggered Blooming
The small yellow flowers open only under bright, direct sunlight to maximize pollination efficiency, closing rapidly on cloudy days or during the night.
Measurements & details
- Length
- 10-30 cm
- Lifespan
- 10-30 years
Diet & Feeding
As an autotrophic plant, Woolly Beachheather produces its own organic compounds through photosynthesis, utilizing sunlight, carbon dioxide, and water.
Primary Foods
- Sunlight
- Carbon dioxide
- Water
- Soil nutrients
Ecological connections
American Beachgrass
Ammophila breviligulata
Co-occurs in sand dune habitats, where both species work together to stabilize shifting sands and build dune structures.

Eastern Carpenter Bee
Xylocopa virginica
Visits the small yellow flowers to forage for pollen and nectar, facilitating pollination for the beachheather.
Traits
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Also known as
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Safety
Danger
1/5 ยท Very low
No special safety notes yet.
Frequently Asked Questions
How to identify Woolly Beachheather?
The easiest way to identify Woolly Beachheather is to use the Snappit nature identifier app.
How long is Woolly Beachheather?
10-30 cm
How long does Woolly Beachheather live?
10-30 years
What does Woolly Beachheather eat?
As an autotrophic plant, Woolly Beachheather produces its own organic compounds through photosynthesis, utilizing sunlight, carbon dioxide, and water.
Where is Woolly Beachheather usually found?
Found in coastal and inland sand dunes, sandy beaches, and pine barrens, where soils are nutrient-poor and highly draining.
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Where to spot

Massachusetts, US
Greenwood Farm
You might spot American Herring Gull and Common Eider.
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New York, US
Jones Beach State Park
You might spot American Herring Gull, Brant, and Great Black-Backed Gull.
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Massachusetts, US
Stavros Reservation
You might spot Woolly Beachheather and American Herring Gull.
View guide โ

Massachusetts, US
Wellfleet Bay Wildlife Sanctuary
You might spot Bearberry, Mud Fiddler Crab, and Pitch Pine.
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