When does California fuchsia bloom in California?

Most often in October. Across 6,124 dated, research-grade observations of Epilobium canum in California, the flowering season runs roughly July to December.

Peak October In flower 6,124 Examined 6,901 State California

Flowering 6,124 in flower of 6,901 examined

61%

21%

25%

17%

46%

77%

91%

95%

98%

99%

98%

91%

Proportion of examined Epilobium canum in California in flower, by month
Month	In flower	Examined	Share	95% interval
Jan	116	190	61%	54% to 68%
Feb	23	112	21%	14% to 29%
Mar	29	117	25%	18% to 33%
Apr	28	168	17%	12% to 23%
May	72	157	46%	38% to 54%
Jun	260	339	77%	72% to 81%
Jul	608	670	91%	88% to 93%
Aug	944	990	95%	94% to 97%
Sep	1377	1409	98%	97% to 98%
Oct	1407	1428	99%	98% to 99%
Nov	866	886	98%	97% to 99%
Dec	394	435	91%	87% to 93%

Peak flowering in Oct. Each bar is the share of Epilobium canum in California 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. 6,124 of 6,901 examined observations were in flower, every one of them research grade. The whisker on each bar is a 95% Wilson interval. 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.wt38fd.

What this is, and what it is not

This is a record of when people in California found Epilobium canum in flower, not a forecast. It is computed only from observations made in California, so it is not the species’ global average dragged onto a map: the same plant flowers on different dates in different places, and that is the entire point of the page.

It will not tell you what your particular plant will do this year. Bloom time moves with the season, with altitude, and with the weather, and a warm February pulls everything forward. We publish the distribution and the sample size, and we refuse to draw a month that too few people examined.

The plant

Epilobium canum

California fuchsia

Sourcesevery claim on this page

GBIF (iNaturalist Research-grade Observations). Dated flowering annotations in California. Every record achieved iNaturalist quality grade Research, which is applied upstream at export. 10.15468/dl.wt38fd. Retrieved 2026-07-14.
World Flora Online Plant List. The accepted name. CC0. Retrieved 2026-07-12.