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Asteraceae family

Tarweed Harmonia guggolziorum

Native

Tarweed is an annual wildflower native to the lower 48 states.

More about this plant

Harmonia guggolziorum is a rare California plant species of plant in the tribe Madieae within the family Asteraceae. It is known by the common names Guggolz tarplant and Guggolzes' harmonia. It is endemic to Mendocino County, California, where it is known from two occurrences near Hopland. It is a member of the serpentine soils flora and grows in chaparral habitat. It was only discovered in 2000 and described to science in 2001. Wikipedia →

Growing & care

USDA PLANTS · TRY
Conditions
Sources · Conditions
Cold hardiness (derived) — Hardiness
Hardiness
≥ zone 11 derived from its U.S. range
Size & form
Sources · Size & form
USDA PLANTS — Lifespan
Lifespan
Annual
In the garden
Herb layer — Sits in the herb of a layered food forest or polyculture.Open guide →
derived roles
Species characteristics from USDA PLANTS (public domain) + TRY (CC BY) — general guidance, not a guarantee for your exact site. Deer "browsing" is documented palatability, not a deer-proof claim.
Sources for this entry (10) Open & cited
[01] Scientific name & family — USDA PLANTS (DwCA, Zenodo 17903503)
[02] Growth habit & duration — USDA PLANTS (DwCA, Zenodo 17903503)
[03] Native status & distribution — USDA PLANTS (DwCA, Zenodo 17903503)
[04] Common name — USDA PLANTS (via GBIF)
[05] Invasive / introduced status — USDA PLANTS (DwCA, Zenodo 17903503) — native status
[07] Description — Wikipedia (CC BY-SA)
[08] Conservation rank — NatureServe Explorer (CC BY)
[09] Cold hardiness (derived) — Derived from U.S. range × USDA PHZM zones
[10] County range — GBIF Open Data — open-licensed occurrences (CC0/CC-BY) → county
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