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Campanulaceae family

Eastwood's Bellflower Campanula angustiflora

Native Specialist-bee host

Eastwood's Bellflower is an annual wildflower native to the lower 48 states. It blooms May – Jun. A host for pollen-specialist native bees.

More about this plant

Ravenella angustiflora is a species of flowering plant in the bellflower family Campanulaceae. It is known by the common name Eastwood's bellflower. It is endemic to California, where it grows in the serpentine soils of the hills and mountains surrounding the San Francisco Bay Area. It is a flower of the chaparral plant community. This is a hairy annual herb producing a thin, branching stem up to 20 centimeters (8 in) tall. The leaves are leathery in texture and oval in shape, measuring between 0.5 and 1 centimeter in length, with a few teeth along the edges. The bell-shaped flower is pale blue or white and just a few millimeters long. The fruit is a ribbed, spherical capsule. 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
The garden year bloom → fruit → fall colour
J
F
M
A
M
J
J
A
S
O
N
D
Bloom
Bloom (the flower's colour)
Bloom · May – Jun — 32 obs · Herbarium specimens — Park et al. 2023 (CC BY 4.0)
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 →
✦ 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. Campanula 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.
Sources for this entry (9) 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
[06] Description — Wikipedia (CC BY-SA)
[07] Ecological value — GloBI · Smith et al. 2024 (CC BY)
[09] Cold hardiness (derived) — Derived from U.S. range × USDA PHZM zones
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