Spiraea tomentosaL.

Steeplebush

WFO wfo-0001018913 Accepted WFO 2026-06 8 photographs CC0 / CC BY

Plate 1 figs. a–h

Spiraea tomentosa, photographed by Lynn Harper
fig. a Lynn Harper, CC0 1.0 / 2022-06-13 / obs. 205874964

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 = 1,499 observations

Flowering observations of Spiraea tomentosa by month
MonthObservations
Jan0
Feb0
Mar0
Apr0
May1
Jun15
Jul796
Aug657
Sep28
Oct2
Nov0
Dec0

Peak flowering in Jul, from 1,499 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 27 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.

  • Drimopogon ferruginea (Raf.) B.D.Jacks.
  • Drimopogon ferrugineus Raf.
  • Drimopogon glomerata (Raf.) B.D.Jacks.
  • Drimopogon glomeratus Raf.
  • Drimopogon parvifolius Raf.
  • Drimopogon rosea (Raf.) B.D.Jacks.
  • Drimopogon roseus Raf.
  • Drimopogon tomentosa (L.) B.D.Jacks.
  • Spiraea ferruginea Raf.
  • Spiraea ferruginea var. angustifolia Raf.
  • Spiraea glomerata Raf.
  • Spiraea glomerata var. cinerea Raf.
  • Spiraea glomerata var. major Raf.
  • Spiraea glomerata var. pallida Raf.
  • Spiraea parvifolia Raf.
  • Spiraea rosea Raf.
  • Spiraea tomentosa f. alba (Weston) Rehder
  • Spiraea tomentosa f. albiflora J.F.Macbr.
  • Spiraea tomentosa f. tomentosa
  • Spiraea tomentosa var. alba Weston
  • Spiraea tomentosa var. albiflora Raf.
  • Spiraea tomentosa var. elatior Raf.
  • Spiraea tomentosa var. ferruginea Raf.
  • Spiraea tomentosa var. paniculata Raf.

and 3 more.

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.