Photo by Melody

PlantFiles: Common Dog Weed, Fiveneedle Pricklyleaf, Five-needled Thymophylla, Parralena, Stiff-leafed Dogweed,
Thymophylla pentachaeta

Family: Asteraceae (ass-ter-AY-see-ee) (Info)
Genus: Thymophylla (ty-mo-FIL-uh) (Info)
Species: pentachaeta (pen-tuh-KAY-tuh) (Info)

Synonym:Dyssodia pentachaeta

One member has or wants this plant for trade.


6-12 in. (15-30 cm)

15-18 in. (38-45 cm)
18-24 in. (45-60 cm)
24-36 in. (60-90 cm)

USDA Zone 9a: to -6.6 C (20 F)
USDA Zone 9b: to -3.8 C (25 F)
USDA Zone 10a: to -1.1 C (30 F)

Sun Exposure:
Sun to Partial Shade
Light Shade

Seed is poisonous if ingested

Bloom Color:
Gold (Yellow-Orange)
Bright Yellow

Bloom Time:
Mid Spring
Late Spring/Early Summer
Mid Summer
Late Summer/Early Fall
Mid Fall
Late Fall/Early Winter


Other details:
This plant is attractive to bees, butterflies and/or birds
Average Water Needs; Water regularly; do not overwater
Suitable for growing in containers

Soil pH requirements:
Unknown - Tell us

Patent Information:
Unknown - Tell us

Propagation Methods:
From seed; direct sow outdoors in fall

Seed Collecting:
Allow seedheads to dry on plants; remove and collect seeds

Click thumbnail
to view:

By Xenomorf
Thumbnail #1 of Thymophylla pentachaeta by Xenomorf

By Xenomorf
Thumbnail #2 of Thymophylla pentachaeta by Xenomorf

By Xenomorf
Thumbnail #3 of Thymophylla pentachaeta by Xenomorf

By Xenomorf
Thumbnail #4 of Thymophylla pentachaeta by Xenomorf


1 positive
1 neutral
No negatives

Gardeners' Notes:

Positive marasri On Oct 5, 2012, marasri from Dripping Springs, TX wrote:

It is native on my Central Texas land. I love this little plant. It naturalizes in a cactus garden very nicely. It is nice growing in a decomposed granite walk way or as a edging plant. It grows in solid caliche and improved catus soil. Its low stature makes it perfect to use with cactus and low growing prickly pear. It seems to always makes me smile. And I love all its names, from from the lyrical melodic Parralena and Dysodia to "Common Dog Weed"

Neutral melody On Feb 14, 2005, melody from Benton, KY (Zone 7a) wrote:

A low, tufted, dark green, prickly plant with deep yellow flowers on leafless stalks.

Found in open deserts and arid, rocky plains in southern UT to southeastern CA, AZ, NM, TX ans Mexico. Commonly grows near the Creosote Bush and Snakeweed.


This plant has been said to grow in the following regions:

Chandler, Arizona
Phoenix, Arizona
Tucson, Arizona
Elephant Butte, New Mexico
San Antonio, Texas

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