When does shaggy portulaca bloom in Florida?

Most often in September. Across 367 dated, research-grade observations of Portulaca pilosa in Florida, the flowering season runs roughly April to December.

Peak September In flower 367 Examined 437 State Florida

Flowering 367 in flower of 437 examined

58%

76%

91%

78%

87%

83%

82%

97%

91%

82%

86%

Proportion of examined Portulaca pilosa in Florida in flower, by month
Month	In flower	Examined	Share	95% interval
Jan	7	12	58%	32% to 81%
Feb	4	4	too few examined
Mar	13	17	76%	53% to 90%
Apr	30	33	91%	76% to 97%
May	45	58	78%	65% to 86%
Jun	87	100	87%	79% to 92%
Jul	77	93	83%	74% to 89%
Aug	51	62	82%	71% to 90%
Sep	28	29	97%	83% to 99%
Oct	10	11	91%	62% to 98%
Nov	9	11	82%	52% to 95%
Dec	6	7	86%	49% to 97%

Peak flowering in Sep. Each bar is the share of Portulaca pilosa 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. 367 of 437 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 Florida found Portulaca pilosa 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

Portulaca pilosa

shaggy portulaca

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.