When does largeleaf pennywort bloom in Texas?

Most often in June. Across 303 dated, research-grade observations of Hydrocotyle bonariensis in Texas, the flowering season runs roughly March to November.

Peak June In flower 303 Examined 343 State Texas

Flowering 303 in flower of 343 examined

71%

58%

84%

91%

95%

100%

95%

79%

91%

100%

72%

Proportion of examined Hydrocotyle bonariensis in Texas in flower, by month
Month	In flower	Examined	Share	95% interval
Jan	10	14	71%	45% to 88%
Feb	11	19	58%	36% to 77%
Mar	36	43	84%	70% to 92%
Apr	73	80	91%	83% to 96%
May	70	74	95%	87% to 98%
Jun	35	35	100%	90% to 100%
Jul	18	19	95%	75% to 99%
Aug	11	14	79%	52% to 92%
Sep	4	4	too few examined
Oct	10	11	91%	62% to 98%
Nov	12	12	100%	76% to 100%
Dec	13	18	72%	49% to 88%

Peak flowering in Jun. Each bar is the share of Hydrocotyle bonariensis 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. 303 of 343 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 Hydrocotyle bonariensis 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

Hydrocotyle bonariensis

largeleaf pennywort

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.