When does blue mistflower bloom in Louisiana?

Most often in November. Across 303 dated, research-grade observations of Conoclinium coelestinum in Louisiana, the flowering season runs roughly May to December.

Peak November In flower 303 Examined 336 State Louisiana

Flowering 303 in flower of 336 examined

69%

91%

88%

83%

67%

90%

97%

98%

90%

Proportion of examined Conoclinium coelestinum in Louisiana in flower, by month
Month	In flower	Examined	Share	95% interval
Jan	0	1	too few examined
Feb	0	0	too few examined
Mar	0	3	too few examined
Apr	18	26	69%	50% to 84%
May	48	53	91%	80% to 96%
Jun	15	17	88%	66% to 97%
Jul	5	6	83%	44% to 97%
Aug	6	9	67%	35% to 88%
Sep	44	49	90%	78% to 96%
Oct	116	119	97%	93% to 99%
Nov	42	43	98%	88% to 100%
Dec	9	10	90%	60% to 98%

Peak flowering in Nov. Each bar is the share of Conoclinium coelestinum in Louisiana 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. 303 of 336 examined observations were in flower, every one of them research grade. The whisker on each bar is a 95% Wilson interval. 3 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 Louisiana found Conoclinium coelestinum in flower, not a forecast. It is computed only from observations made in Louisiana, 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

Conoclinium coelestinum

blue mistflower

Sourcesevery claim on this page

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