Passiflora caeruleaL.

Bluecrown passionflower

WFO wfo-0000479867 Accepted WFO 2026-06 8 photographs CC0 / CC BY

Plate 1 figs. a–h

Passiflora caerulea, photographed by Eduardo Luis Beltrocco
fig. a Eduardo Luis Beltrocco, CC BY 4.0 / 2022-05-21 / obs. 201871664

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.

Flowering n = 2,354 observations

Flowering observations of Passiflora caerulea by month
MonthObservations
Jan97
Feb79
Mar107
Apr99
May223
Jun257
Jul265
Aug244
Sep278
Oct386
Nov205
Dec114

Peak flowering in Oct, from 2,354 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.

  • Granadilla coerulea Medik.
  • Passiflora caerulea var. angustifolia G.Don
  • Passiflora caerulea var. glauca Mast.
  • Passiflora caerulea var. glaucophylla Loudon
  • Passiflora caerulea var. imbricata Mast.
  • Passiflora caerulea var. regnellii Mast.
  • Passiflora chinensis hort. ex Mast.
  • Passiflora granadilla Gaterau
  • Passiflora hartwiesiana hort. ex Mast.
  • Passiflora loureiroi G.Don
  • Passiflora mayana Veitch ex Voigt
  • Passiflora selloi Dehnh.
  • Passiflora stenophylla Hoffmanns.

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.