When does desert willow bloom in Nevada?

Most often in June. Across 208 dated, research-grade observations of Chilopsis linearis in Nevada, the flowering season runs roughly May to October.

Peak June In flower 208 Examined 294 State Nevada

Flowering 208 in flower of 294 examined

20%

63%

84%

94%

88%

91%

52%

78%

50%

Proportion of examined Chilopsis linearis in Nevada in flower, by month
Month	In flower	Examined	Share	95% interval
Jan	1	2	too few examined
Feb	1	5	20%	4% to 62%
Mar	0	5	0%	0% to 43%
Apr	26	41	63%	48% to 76%
May	69	82	84%	75% to 90%
Jun	33	35	94%	81% to 98%
Jul	15	17	88%	66% to 97%
Aug	21	23	91%	73% to 98%
Sep	31	60	52%	39% to 64%
Oct	7	9	78%	45% to 94%
Nov	4	8	50%	22% to 78%
Dec	0	7	0%	0% to 35%

Peak flowering in Jun. Each bar is the share of Chilopsis linearis in Nevada 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. 208 of 294 examined observations were in flower, every one of them research grade. The whisker on each bar is a 95% Wilson interval. One month has fewer than 5 examined observations, so no proportion is drawn for it. 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 Nevada found Chilopsis linearis in flower, not a forecast. It is computed only from observations made in Nevada, 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

Chilopsis linearis

desert willow

Sourcesevery claim on this page

GBIF (iNaturalist Research-grade Observations). Dated flowering annotations in Nevada. 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.