When does Chisos Mountain false Indianmallow bloom in Texas?

Most often in September. Across 99 dated, research-grade observations of Allowissadula holosericea in Texas, the flowering season runs roughly July to December.

Peak September In flower 99 Examined 187 State Texas

Flowering 99 in flower of 187 examined

17%

21%

50%

42%

57%

60%

69%

63%

65%

61%

Proportion of examined Allowissadula holosericea in Texas in flower, by month
Month	In flower	Examined	Share	95% interval
Jan	0	5	0%	0% to 43%
Feb	0	2	too few examined
Mar	1	6	17%	3% to 56%
Apr	3	14	21%	8% to 48%
May	10	20	50%	30% to 70%
Jun	8	19	42%	23% to 64%
Jul	8	14	57%	33% to 79%
Aug	6	10	60%	31% to 83%
Sep	18	26	69%	50% to 84%
Oct	17	27	63%	44% to 78%
Nov	17	26	65%	46% to 81%
Dec	11	18	61%	39% to 80%

Peak flowering in Sep. Each bar is the share of Allowissadula holosericea in Texas 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. 99 of 187 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 Texas found Allowissadula holosericea in flower, not a forecast. It is computed only from observations made in Texas, 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

Allowissadula holosericea

Chisos Mountain false Indianmallow

Sourcesevery claim on this page

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