Quercus agrifoliaNée

coast live oak

WFO wfo-0000289442 Accepted WFO 2026-06 8 photographs CC0 / CC BY

Plate 1 figs. a–h

Quercus agrifolia, photographed by Jeremiah Degenhardt
fig. a Jeremiah Degenhardt, CC BY 4.0 / 2022-05-21 / obs. 199702110

Every figure is a research-grade observation under CC0, CC BY or CC BY-SA, rehosted with the photographer’s name, the licence and the observation it came from. Photographs under a NonCommercial licence are excluded from this site and are never stored, which costs us a great many pictures and is not negotiable.

Confused withby our own model

These are not lookalikes we guessed at. Each one is a species our identification model genuinely mistook for this plant, and how many times. The error rate is published.

Flowering n = 1,245 observations

Flowering observations of Quercus agrifolia by month
MonthObservations
Jan65
Feb138
Mar481
Apr408
May57
Jun17
Jul10
Aug14
Sep8
Oct13
Nov12
Dec22

Peak flowering in Mar, from 1,245 community-annotated observations worldwide. This is a global aggregate, not a forecast for your garden: the same species flowers on different dates in different hemispheres, and citizen-science records cluster near cities, at weekends, and in spring. Where a species has fewer than 30 annotated records we do not draw this chart at all.

Also published as 6 synonyms

A synonym is not an error. It is a record of botanists disagreeing, in print, about where this plant belongs. Each of these was somebody’s considered answer.

  • Quercus acutiglandis Sarg.
  • Quercus agrifolia var. agrifolia
  • Quercus agrifolia var. frutescens Engelm.
  • Quercus agrifolia var. oxyadenia J.T.Howell
  • Quercus oxyadenia Torr.
  • Quercus pricei Sudw.

Sourcesevery claim on this page

  1. World Flora Online Plant List. accepted name, authority, classification. CC0. Retrieved 2026-07-12.
  2. iNaturalist. photographs and flowering annotations, CC0 / CC BY / CC BY-SA only. per photograph. Retrieved 2026-06-27.

We publish what we can source and we say so when we cannot. This page has no care advice, no toxicity claim and no native range, because we do not yet have those from a source we can cite.