Carried by 4 nurseries
View Availability at NurseryData provided by the participants of the Consortium of California Herbaria
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Clustered Tarweed (Hemizonia fasciculata) is a ative annual herb in the Asteraceae (Sunflower) family. It was formerly classified as Hemizonia fasciculata, and some sources may still refer to it that way. It grows in southern and central California from the coast into the west slope of the mountains, from San Luis Obispo County southwards into Baja. It tends to grow in grasslands, woodlands and coastal sage scrub at elevations from sea level to about 4,000 feet. Its long blooming season makes it a dependable source of color in wildflower gardens. The composite flowers have 5 ray flowers and six disk flowers. It is sometimes included in wildflower seed mixes and is useful in restoration projects.
Annual herb
3 ft Tall
2 ft Wide
Yellow
Spring, Summer, Fall
Full Sun
Extremely Low, Very Low
Max 1x / month once established
Tolerates cold to 20° F
Fast, Medium
Tolerates a variety of soils as long as drainage is good.
Soil PH: 5.1 - 8.2
By seed
15*, 16*, 17*, 22*, 23*, 24*
Seasonally dry coastal plains, canyons, foothills and valleys of southern California. Occasionally in disturbed areas.
Coastal Sage Scrub, Southern Oak Woodland, Valley Grassland
Use with other annuals or perennial herbs such as Poppy (Eschscholzia spp. or Papaver spp.), Baby Blue Eyes (Nemophila menziesii), Cream Cups (Platystemon californicus), Phacelia spp., Lupine (Lupinus spp.), and with geophytes such as Onion (Allium spp.), Mariposa Lily (Calochortus spp.), and Blue Dicks (Dichelostemma capitatum). Also useful around various cactus and succulents such as Dudleya spp. and with native grasses.
Butterflies and moths supported
1 confirmed and 2 likely