
Photo: RickShoryCC BY-SA 4.0via Wikimedia Commonsresized / cropped
Tall Woolly Heads Plant Care
Psilocarphus elatior A.Gray
Updated · Sources · How we source care data
Psilocarphus elatior is a species of flowering plant in the family Asteraceae known by the common names tall woollyheads, meadow woollyheads and tall woolly-marbles. It is native to the Pacific Northwest in western North America from Vancouver Island, where it is known from just a few occurrences, to northern California. It grows in seasonally moist spots such as meadows, spring seeps, and vernal pools.
Every 7–10 days
Full sun to partial shade
50–80°F
40–60%
At a glance
How do you care for Tall Woolly Heads?
Plant Tall Woolly Heads 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 50–80°F (10–27°C). Fertilize it every 6 months during the growing season.
Where Is the Tall Woolly Heads Native To?
What Is the Tall Woolly Heads?
Tall Woolly Heads (Psilocarphus elatior) belongs to the Asteraceae family within the Psilocarphus genus. Tall Woolly Heads is native to the Pacific Northwest in western North America from Vancouver Island. Tall Woolly Heads is also known as Psilocarphus elatior.
Tall Woolly Heads displays a low-growing mat-forming growth habit, reaching up to 0.5 ft tall with a spread of approximately 1 ft. Tall Woolly Heads produces small white or yellow daisy-like flowers.
Leaf size: approximately 1.5 inches.
How Often Should You Water a Tall Woolly Heads?
Water a young or newly planted Tall Woolly Heads 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 Tall Woolly Heads Need?
Tall Woolly Heads thrives in full sun to partial shade.
Light Requirement
Full sun to partial shade
What Temperature and Humidity Does the Tall Woolly Heads Prefer?
Psilocarphus elatior tolerates temperatures of 50–80°F. Tall Woolly Heads prefers humidity levels of 40–60%.
Temperature
50–80°F
Humidity
40–60%
What Soil Mix Works Best for a Tall Woolly Heads?
Well-draining sandy soil mix with added organic matter. Good drainage is essential for Tall Woolly Heads to prevent waterlogging, which leads to root rot and fungal issues.
How Often Should You Fertilize a Tall Woolly Heads?
Feed Tall Woolly Heads every 6 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 6 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 Tall Woolly Heads?
Choose a spot with full sun to partial shade and well-draining sandy soil mix with added organic matter. Avoid low spots where water collects after rain.
Tall Woolly Heads 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 Tall Woolly Heads?
Tall Woolly Heads 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 Tall Woolly Heads?
Prune Tall Woolly Heads 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 Tall Woolly Heads in Winter?
Tall Woolly Heads 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 Tall Woolly Heads?
Tall Woolly Heads can be propagated through seeds. Similar propagation techniques also apply to micropus brevissimus plant care, which shares the same genus.
Is the Tall Woolly Heads Toxic to Pets and Children?
Pet safety not verified
The ASPCA does not list Tall Woolly Heads, 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 Tall Woolly Heads?
Tall Woolly Heads is susceptible to aphids, whiteflies, spider mites. 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 Tall Woolly Heads Need?
Tall Woolly Heads grows outdoors in USDA Zone 12a. It survives winters down to planting zone 12a. Tall Woolly Heads is native to the Pacific Northwest in western North America from Vancouver Island. In cooler regions, grow Tall Woolly Heads as a houseplant or bring it indoors before the first frost.
Hardiness Zone
Zone 12a
Keep exploring plants
Tall Woolly Heads 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 Psilocarphus genus — compare its care with other Psilocarphus species on PlantoScan.
Psilocarphus is part of the Asteraceae plant family — browse all Asteraceae genera and species.
Tall Woolly Heads 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: Psilocarphus elatior A.Gray, family Asteraceae (first published in Syn. Fl. N. Amer. 1(2, Suppl.): 448 (1886)) — World Flora Online record, IPNI name record.
- Pet toxicity: Pet safety not verified: the ASPCA does not list Tall Woolly Heads, 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.
- Photo: RickShory, CC BY-SA 4.0, Wikimedia Commons — original.
- 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.
