When does cowpen daisy bloom in Texas?

Most often in December. Across 1,113 dated, research-grade observations of Verbesina encelioides in Texas, the flowering season runs roughly January to December.

Peak December In flower 1,113 Examined 1,144 State Texas

Flowering 1,113 in flower of 1,144 examined

97%

98%

99%

97%

96%

99%

94%

99%

100%

Proportion of examined Verbesina encelioides in Texas in flower, by month
Month	In flower	Examined	Share	95% interval
Jan	31	32	97%	84% to 99%
Feb	40	41	98%	87% to 100%
Mar	73	74	99%	93% to 100%
Apr	188	193	97%	94% to 99%
May	95	98	97%	91% to 99%
Jun	98	102	96%	90% to 98%
Jul	80	83	96%	90% to 99%
Aug	52	54	96%	87% to 99%
Sep	132	133	99%	96% to 100%
Oct	152	161	94%	90% to 97%
Nov	116	117	99%	95% to 100%
Dec	56	56	100%	94% to 100%

Peak flowering in Dec. Each bar is the share of Verbesina encelioides 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. 1,113 of 1,144 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 Texas found Verbesina encelioides 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

Verbesina encelioides

cowpen daisy

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.