Hayfield Tarweed

Hemizonia congesta subsp. lutescens

annualView on Calscape

Care

Sun

full sun

Water

low

Size

0–3ft tall

Bloom

Jan-Dec

Container

Friendly

Flowers

Prized

Native Range

Coastal grassland and scrub from the San Francisco Bay Area to Santa Barbara County, below 2000 ft elevation

Care Guide

Planting

Plant Hayfield Tarweed in full sun in well-draining soil during the winter or spring months, mimicking its natural habitat in California grasslands and open areas. Space plants to accommodate their spindly growth habit, which typically reaches 1 to 2.5 feet tall. This is an annual herb, so plan for seasonal growth rather than a permanent fixture in your garden.

After Planting

Water minimally after planting - this is a low-water plant adapted to natural rainfall patterns, so avoid overwatering once established. Expect blooms from winter through spring as the plant flowers and sets seed. The most common mistake is treating this like a perennial or watering it as heavily as other garden plants; let it thrive on lean conditions and allow it to self-seed if you want it to return the following year.

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Endangered & Threatened Species Supported

California ringlet butterflyCoenonympha california

California state threatened species

CA: Threatened

Sunflower beeXenoglossa pomonae

California CESA Candidate species

CA: Candidate

Wildlife Supported