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  1. Life
  2. Plants
  3. Vascular Plants
  4. Dicots
  5. Sunflowers, Bellflowers, Fanflowers, and Allies
  6. Sunflower Family
  7. Tarweeds and Allies
  8. Tarweed

genus

Tarweed

Holocarpha

Traits
Includes
3 native
Where
In the US
Source
iNaturalist

Field notes

Children

  • Pit-gland Tarweed native
  • Heermann's Tarweed native
  • San Joaquin Tarweed native
  • Santa Cruz Tarplant native

Range

United States

Greener is more native, amber more introduced; paler is less certain. How this was decided

Key traits

Layer
Herbaceous plants
Plant type
Annual Wildflower

From USDA PLANTS.

Top native tarweed All

Native to the US, ranked by caterpillars, then bees and other hosts, food, flowers and shelter.

  • Pit-gland Tarweed Holocarpha virgata bees 2 food 1 flowers 9
  • Heermann's Tarweed Holocarpha heermannii bees 2 flowers 10
  • San Joaquin Tarweed Holocarpha obconica bees 1 flowers 2
  • Santa Cruz Tarplant Holocarpha macradenia

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