When does Desert Prince's Plume bloom in Nevada?

Most often in July. Across 187 dated, research-grade observations of Stanleya pinnata in Nevada, the flowering season runs roughly March to October.

Peak July In flower 187 Examined 209 State Nevada

Flowering 187 in flower of 209 examined

92%

90%

98%

96%

100%

86%

100%

60%

Proportion of examined Stanleya pinnata in Nevada in flower, by month
Month	In flower	Examined	Share	95% interval
Jan	0	0	too few examined
Feb	2	4	too few examined
Mar	11	12	92%	65% to 99%
Apr	72	80	90%	81% to 95%
May	50	51	98%	90% to 100%
Jun	27	28	96%	82% to 99%
Jul	5	5	100%	57% to 100%
Aug	6	7	86%	49% to 97%
Sep	6	7	86%	49% to 97%
Oct	5	5	100%	57% to 100%
Nov	3	5	60%	23% to 88%
Dec	0	5	0%	0% to 43%

Peak flowering in Jul. Each bar is the share of Stanleya pinnata 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. 187 of 209 examined observations were in flower, every one of them research grade. The whisker on each bar is a 95% Wilson interval. 2 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.wt38fd.

What this is, and what it is not

This is a record of when people in Nevada found Stanleya pinnata 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

Stanleya pinnata

Desert Prince's Plume

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.