Nemacaulis denudata Plant Care
Nemacaulis denudata Nutt.
Updated · Sources · How we source care data
Nemacaulis is a monotypic plant genus in the buckwheat family containing the single species Nemacaulis denudata, which is known by the common names woollyheads and cottonheads. This plant is a somewhat undistinguished delicate annual herb with thin, spindly, naked stems and woolly white flowerheads.
Every 7–10 days
Full sun to partial shade
50–80°F
40–70%
At a glance
How do you care for Nemacaulis denudata?
Plant Nemacaulis denudata 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 Nemacaulis denudata Native To?
What Is the Nemacaulis denudata?
Nemacaulis denudata (Nemacaulis denudata) belongs to the Polygonaceae family within the Nemacaulis genus. Nemacaulis denudata is native to sandy habitats in California, Arizona, and northern Mexico.
Nemacaulis denudata displays a low rosette, spreading growth habit, reaching up to 0.5 ft tall with a spread of approximately 1 ft. Nemacaulis denudata produces small clusters of tiny white or pink flowers.
Leaf size: approximately 2 inches.
How Often Should You Water a Nemacaulis denudata?
Water a young or newly planted Nemacaulis denudata 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 Nemacaulis denudata Need?
Nemacaulis denudata thrives in full sun to partial shade.
Light Requirement
Full sun to partial shade
What Temperature and Humidity Does the Nemacaulis denudata Prefer?
Nemacaulis denudata tolerates temperatures of 50–80°F. Nemacaulis denudata prefers humidity levels of 40–70%.
Temperature
50–80°F
Humidity
40–70%
What Soil Mix Works Best for a Nemacaulis denudata?
Well-draining sandy soil with high organic content. Good drainage is essential for Nemacaulis denudata to prevent waterlogging, which leads to root rot and fungal issues.
How Often Should You Fertilize a Nemacaulis denudata?
Feed Nemacaulis denudata 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 Nemacaulis denudata?
Choose a spot with full sun to partial shade and well-draining sandy soil with high organic content. Avoid low spots where water collects after rain.
Nemacaulis denudata 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 Nemacaulis denudata?
Nemacaulis denudata 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 Nemacaulis denudata?
Prune Nemacaulis denudata 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 Nemacaulis denudata in Winter?
Nemacaulis denudata 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 Nemacaulis denudata?
Nemacaulis denudata can be propagated through seeds, division of offsets.
Is the Nemacaulis denudata Toxic to Pets and Children?
Pet safety not verified
The ASPCA does not list Nemacaulis denudata, 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 Nemacaulis denudata?
Nemacaulis denudata is susceptible to aphids, spider mites, 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 Nemacaulis denudata Need?
Nemacaulis denudata grows outdoors in USDA Zone 12a. It survives winters down to planting zone 12a. Nemacaulis denudata is native to sandy habitats in California, Arizona, and northern Mexico. In cooler regions, grow Nemacaulis denudata as a houseplant or bring it indoors before the first frost.
Hardiness Zone
Zone 12a
Keep exploring plants
Nemacaulis denudata 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 Nemacaulis genus — compare its care with other Nemacaulis species on PlantoScan.
Nemacaulis is part of the Polygonaceae plant family — browse all Polygonaceae genera and species.
Nemacaulis denudata 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: Nemacaulis denudata Nutt., family Polygonaceae (first published in J. Acad. Nat. Sci. Philadelphia Ser. 2, i. 168 (Aug. 1848); vide Reveal &Spevak, in Taxon, xvi. 411 (1967).) — World Flora Online record, IPNI name record.
- Pet toxicity: Pet safety not verified: the ASPCA does not list Nemacaulis denudata, 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.
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