When does saltcedar bloom in California?

Most often in June. Across 209 dated, research-grade observations of Tamarix ramosissima in California, the flowering season runs roughly June.

Peak June In flower 209 Examined 495 State California

Flowering 209 in flower of 495 examined

13%

49%

61%

67%

76%

100%

69%

58%

33%

57%

24%

26%

Proportion of examined Tamarix ramosissima in California in flower, by month
Month	In flower	Examined	Share	95% interval
Jan	18	136	13%	9% to 20%
Feb	23	47	49%	35% to 63%
Mar	40	66	61%	49% to 72%
Apr	38	57	67%	54% to 78%
May	19	25	76%	57% to 89%
Jun	13	13	100%	77% to 100%
Jul	9	13	69%	42% to 87%
Aug	11	19	58%	36% to 77%
Sep	6	18	33%	16% to 56%
Oct	12	21	57%	37% to 76%
Nov	10	41	24%	14% to 39%
Dec	10	39	26%	15% to 41%

Peak flowering in Jun. Each bar is the share of Tamarix ramosissima 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. 209 of 495 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 Tamarix ramosissima 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

Tamarix ramosissima

saltcedar

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.