Solidago houghtonii (Houghton's goldenrod)

Plate 1 figs. a–h · 5 observations

This species has been photographed under an open licence only 5 times, so some figures below are different views of the same plant, taken on the same day, rather than different individuals. They are usually different parts of it: the leaf, the flower, the bark.

Solidago houghtonii, photographed by Derek — fig. a Derek, CC BY 4.0 / 2021-09-02 / obs. 154818831

Solidago houghtonii, photographed by laiet17 — fig. c laiet17, CC0 1.0 / obs. 143399663

Solidago houghtonii, photographed by Brandon Corder — fig. e Brandon Corder, CC BY 4.0 / obs. 59749251

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 71 in flower of 88 examined

38%

97%

22%

Proportion of examined Solidago houghtonii in flower, by month
Month	In flower	Examined	Share	95% interval
Jan	0	0	too few examined
Feb	0	0	too few examined
Mar	0	0	too few examined
Apr	0	0	too few examined
May	0	3	too few examined
Jun	0	0	too few examined
Jul	3	8	38%	14% to 69%
Aug	32	33	97%	85% to 99%
Sep	34	35	97%	85% to 99%
Oct	2	9	22%	6% to 55%
Nov	0	0	too few examined
Dec	0	0	too few examined

Peak flowering in Sep. Each bar is the share of Solidago houghtonii observations in which someone actually recorded the reproductive state and found the plant in flower, not the raw number of flowering records. That distinction matters: people observe plants far more in spring than in winter, so a bare count of flowering records partly measures when people go outside. Dividing by the number examined removes that. 71 of 88 examined observations were in flower, every one of them research grade. The whisker on each bar is a 95% Wilson interval. 8 months have fewer than 5 examined observations, so no proportion is drawn for them. This is still a global aggregate and not a forecast for your garden: the same species flowers on different dates in different hemispheres. Where a species has fewer than 30 flowering records we do not draw this chart at all. Computed from 10.15468/dl.cgje2x.

Also published as 2 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.

Aster houghtonii S.F.Blake
Oligoneuron houghtonii (A.Gray) G.L.Nesom

Sourcesevery claim on this page

World Flora Online Plant List. accepted name, authority, classification. CC0. Retrieved 2026-07-12.
iNaturalist. photographs and flowering annotations, CC0 / CC BY / CC BY-SA only. per photograph. Retrieved 2026-06-27.
USDA PLANTS Database. common name, checklist symbol OLHO. public domain. Retrieved 2026-07-13.

We publish what we can source and we say so when we cannot. This page has no care advice and no toxicity claim, because we do not yet have those from a source we can cite. It has no native range either: Kew's checklist does not cover this taxon.