Nemacaulis denudata — a medium houseplant, prefers full sun light
SPECIMEN · FROM THE LIBRARY
Nemacaulis denudata

Nemacaulis Denudata

Updated · 40 observations
ON THIS PLANT

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 nondescript delicate annual herb with thin, spindly, naked stems and woolly white flowerheads. It can be found in sandy habitats in California, Arizona, and northern Mexico.

A note from PlantMom

Cottonheads has strong resistance to disease and is generally not susceptible to illnesses. It can, however, be vulnerable to pests and diseases present in its environment. These problems are typically mild. Regarding care, this plant needs moderate maintenance. It should be pruned on a regular basis to preserve an attractive appearance and healthy growth. Applying fertilizer can also encourage flowering. Cottonheads is appropriate for anyone with outdoor space, such as a garden or patio, and does not require extensive care experience. It may need increased attention when cultivated indoors.

— PlantMom
CARE GUIDE

How to keep Nemacaulis Denudata.

Light

Cottonheads is a plant that derives from well-lit, open spaces and flourishes in abundant sunlight. While it can endure some shade, it favors unobstructed sunlight for its best growth. Identified as a sun-adoring species, this plant has an annual and biennial cycle.

Temperature

Cottonheads possesses the capacity to adjust to various temperature environments, yet its dispersal may be restricted by diverse blends of heat and water conditions. It flourishes most prominently in warm weather in the summertime when there is sufficient rainfall or irrigation. Extended spells of overcast and wet weather, coupled with extended periods of high temperatures, have the potential to heighten the risk of Cottonheads perishing. In the colder months, adequate safeguards against the chill can enhance the survival rate of the plant.

Fertilizer

Cottonheads respond well to regular, mild applications of fertilizer to encourage the growth of robust leaves. During the summer season, it is advisable to feed Cottonheads about once a month. Nitrogen is essential for leaf development, and providing nitrogen-rich supplements ensures the optimal growth of Cottonheads.

Pruning

To optimally care for cottonheads, begin by strategically pruning them between early and late spring. Focus on removing dead branches and thinning out overcrowded areas to improve air circulation. Avoid heavy pruning, as it can cause stress to the plants. Regular maintenance not only enhances their appearance but also promotes robust growth, ensuring your cottonheads remain vibrant and flourishing.

CHARACTERISTICS

Botanical profile.

Plant Type
Herb
Life Cycle
Annual
Genus
Nemacaulis
Family
Polygonaceae
Hardiness Zone
9-11
Mature Height
5 cm to 20 cm
Mature Spread
10 cm to 30 cm
Leaf Color
Gray, Light Gray
Leaf Type
Deciduous
Flower Color
White
Flower Size
0.20 cm to 0.25 cm
Bloom Time
Spring
Planting Time
Spring, Summer, Autumn
Harvest Time
Late spring, Early summer, Mid summer
Native Area
Mexico
ALSO KNOWN AS

Other names.

en Woolly-heads en Cottonheads
PLATES
Nemacaulis denudata leaf
PLATE 01 · leaf
Nemacaulis denudata flower
PLATE 02 · flower
Nemacaulis denudata fruit
PLATE 03 · fruit
Nemacaulis denudata fruit
PLATE 04 · fruit
Nemacaulis denudata habit
PLATE 05 · habit
Nemacaulis denudata habit
PLATE 06 · habit