Verbena hastataL.

blue vervain

WFO wfo-0000331939 Accepted WFO 2026-06 8 photographs CC0 / CC BY

Plate 1 figs. a–h

Verbena hastata, photographed by Cazody
fig. a Cazody, CC0 1.0 / 2021-10-23 / obs. 165903354
Verbena hastata, photographed by Ian Manning
fig. b Ian Manning, CC BY 4.0 / obs. 174393073
Verbena hastata, photographed by Henry "Nick" Robertson
fig. c Henry "Nick" Robertson, CC BY-SA 4.0 / obs. 160379669
Verbena hastata, photographed by Elias
fig. d Elias, CC BY 4.0 / obs. 159262301
Verbena hastata, photographed by Jason Swanson
fig. e Jason Swanson, CC0 1.0 / obs. 202058951
Verbena hastata, photographed by Tom Field
fig. f Tom Field, CC BY 4.0 / obs. 155864544
Verbena hastata, photographed by Henry "Nick" Robertson
fig. g Henry "Nick" Robertson, CC BY-SA 4.0 / obs. 155752771
Verbena hastata, photographed by Tom Lazar
fig. h Tom Lazar, CC0 1.0 / obs. 160379934

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 = 4,127 observations

Peak flowering in Jul, from 4,127 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 14 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.

  • Verbena hastata f. albiflora Moldenke
  • Verbena hastata f. caerulea Moldenke
  • Verbena hastata f. hastata
  • Verbena hastata f. rosea (Coleman) R.H.Cheney
  • Verbena hastata var. hastata
  • Verbena hastata var. oblongifolia Nutt.
  • Verbena hastata var. paniculata (Lam.) Farw.
  • Verbena hastata var. pinnatifida (Lam.) Pursh
  • Verbena hastata var. rosea N.Coleman
  • Verbena hastata var. scabra Moldenke
  • Verbena paniculata Poir.
  • Verbena paniculata Lam.
  • Verbena paniculata var. pinnatifida (Lam.) Schauer
  • Verbena pinnatifida Lam.

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.