Humulus lupulusL.

common hops

WFO wfo-0000725866 Accepted WFO 2026-06 6 photographs CC0 / CC BY

Plate 1 figs. a–f

Humulus lupulus, photographed by Alexis Tinker-Tsavalas
fig. a Alexis Tinker-Tsavalas, CC BY 4.0 / 2022-06-09 / obs. 204714930
Humulus lupulus, photographed by Vladimir Atachkin
fig. b Vladimir Atachkin, CC BY 4.0 / obs. 205696354
Humulus lupulus, photographed by Alexis Tinker-Tsavalas
fig. c Alexis Tinker-Tsavalas, CC BY 4.0 / obs. 204580024
Humulus lupulus, photographed by Radosław Puchałka
fig. d Radosław Puchałka, CC0 1.0 / obs. 204624689
Humulus lupulus, photographed by Donald Davesne
fig. e Donald Davesne, CC BY 4.0 / obs. 204957084
Humulus lupulus, photographed by Anastasia_Surkova
fig. f Anastasia_Surkova, CC BY 4.0 / obs. 204160299

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 = 365 observations

Peak flowering in Aug, from 365 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 13 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.

  • Humulus lupulus var. acrocarpus Alef.
  • Humulus lupulus var. effusus Alef.
  • Humulus lupulus var. fengxianensis J.Q.Fu
  • Humulus lupulus var. lupulus
  • Humulus lupulus var. silvestris Alef.
  • Humulus lupulus var. spaltensis Alef.
  • Humulus volubilis Salisb.
  • Humulus vulgaris Gilib.
  • Lupulus amarus Gilib.
  • Lupulus communis Gaertn.
  • Lupulus humulus Mill.
  • Lupulus scandens Lam.
  • Waldensia lupulina Lavy

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.