Photo by Melody

PlantFiles: Yellow Spiny Daisy, Lacy Tansy Aster
Machaeranthera pinnatifida

Family: Asteraceae (ass-ter-AY-see-ee) (Info)
Genus: Machaeranthera (mak-ee-RANTH-er-uh) (Info)
Species: pinnatifida (pin-nat-ih-FY-duh) (Info)

Synonym:Amellus spinulosus
Synonym:Aster pinnatifidus
Synonym:Machaeranthera australis
Synonym:Sideranthus laevis
Synonym:Machaeranthera pinnatifida subsp. pinnatifida

4 vendors have this plant for sale.

2 members have or want this plant for trade.


6-12 in. (15-30 cm)
12-18 in. (30-45 cm)

6-9 in. (15-22 cm)
9-12 in. (22-30 cm)

USDA Zone 8b: to -9.4 C (15 F)

Sun Exposure:
Full Sun

Unknown - Tell us

Bloom Color:
Bright Yellow

Bloom Time:
Mid Spring


Other details:
This plant is attractive to bees, butterflies and/or birds
Drought-tolerant; suitable for xeriscaping

Soil pH requirements:
5.1 to 5.5 (strongly acidic)
5.6 to 6.0 (acidic)
6.1 to 6.5 (mildly acidic)

Patent Information:

Propagation Methods:
By dividing the rootball
From seed; direct sow outdoors in fall

Seed Collecting:
Bag seedheads to capture ripening seed
Collect seedhead/pod when flowers fade; allow to dry

Click thumbnail
to view:

By SShurgot
Thumbnail #1 of Machaeranthera pinnatifida by SShurgot


1 positive
No neutrals
No negatives

Gardeners' Notes:

Positive melody On Feb 13, 2005, melody from Benton, KY (Zone 7a) wrote:

A slender plant with small, weakly bristly leaves and one yellow flower head at the tip of each of many upper branches.

Founf in open places and in arid grasslands, deserts and among pinon and juniper groves.

Found from alberta south through the Rocky Mts and much of the Plains states to NM, AZ, CA and northern Mexico

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