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Onagraceae family

Springville Clarkia Clarkia springvillensis

Native Specialist-bee host

Springville Clarkia is an annual wildflower native to the lower 48 states. A host for pollen-specialist native bees.

More about this plant

Clarkia springvillensis is a rare species of flowering plant in the evening primrose family known by the common name Springville clarkia. It is endemic to central Tulare County, California, where it is known from fewer than 20 occurrences around Springville. It is a federally listed threatened species. 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.

Wildlife & pollinators

How pollinator value is scored →
❧ Caterpillar hosts ~3 caterpillar species

Clarkia supports ~3 caterpillar species.

Native butterfly & moth caterpillars are the base of the terrestrial food web — most songbirds rear their young almost entirely on them. As a host for native Lepidoptera this is a modest genus.

Recorded feeding on Clarkia in North America, including:

Alypia mariposa · owlet moth Alypia ridingsii · Ridings' Forester Hemaris diffinis · Snowberry Clearwing Hyles gallii · Bedstraw Hawk-Moth Hyles lineata · White-Lined Sphinx Proserpinus clarkiae · Clark's Day Sphinx
Keystone count (genus-level) from Warren II 2026 (CC0) · Tallamy host-use records. Named species (a documented Nearctic sample, not exhaustive) from NHM HOSTS (CC0).
✦ Bees specialist-bee host

Specialist native bees depend on it.

Some native bees are pollen specialists (oligolectic) — they raise young only on pollen from particular plant genera. Clarkia is a recorded specialist-bee host, so losing it can mean losing the bee that relies on it.

Xerces pollinator conservation →
Specialist hosts from Smith et al. 2024.
Species thumbnails re-hosted from iNaturalist — Creative Commons, credited per image (hover for credit). Click any species to see it on iNaturalist. Not exhaustive; many taxa have no openly-licensed photo yet.
Sources for this entry (14) 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] Ecological value — Warren II 2026 (CC0) · Tallamy host-use counts · Smith et al. 2024 (CC BY)
[09] Conservation rank — NatureServe Explorer (CC BY)
[10] Federal ESA status — USFWS ECOS (U.S. Fish & Wildlife Service)
[11] Cold hardiness (derived) — Derived from U.S. range × USDA PHZM zones
[12] Caterpillar host count — Warren II 2026 (Dryad, CC0) · Tallamy host-use counts
[13] Caterpillar species — NHM HOSTS (CC0)
[14] County range — GBIF Open Data — open-licensed occurrences (CC0/CC-BY) → county
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PlantKey’s data is open under CC BY-SA 4.0 — free to reuse and adapt, with attribution and the same licence. Photos keep their own per-image licence + credit (see Sources above).

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