When does largeleaf pennywort bloom in Florida?

Most often in June. Across 343 dated, research-grade observations of Hydrocotyle bonariensis in Florida, the flowering season runs roughly April to November.

Peak June In flower 343 Examined 446 State Florida

Flowering 343 in flower of 446 examined

39%

36%

61%

85%

86%

92%

91%

75%

65%

88%

33%

Proportion of examined Hydrocotyle bonariensis in Florida in flower, by month
Month	In flower	Examined	Share	95% interval
Jan	9	23	39%	22% to 59%
Feb	5	14	36%	16% to 61%
Mar	19	31	61%	44% to 76%
Apr	44	52	85%	72% to 92%
May	63	73	86%	77% to 92%
Jun	56	61	92%	82% to 96%
Jul	59	65	91%	81% to 96%
Aug	32	35	91%	78% to 97%
Sep	15	20	75%	53% to 89%
Oct	17	26	65%	46% to 81%
Nov	14	16	88%	64% to 97%
Dec	10	30	33%	19% to 51%

Peak flowering in Jun. Each bar is the share of Hydrocotyle bonariensis in Florida 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. 343 of 446 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 Florida found Hydrocotyle bonariensis in flower, not a forecast. It is computed only from observations made in Florida, 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 Florida. 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.