When does coastal plain honeycombhead bloom in Florida?

Most often in October. Across 251 dated, research-grade observations of Balduina angustifolia in Florida, the flowering season runs roughly March to December.

Peak October In flower 251 Examined 285 State Florida

Flowering 251 in flower of 285 examined

73%

60%

81%

88%

55%

63%

89%

73%

97%

100%

97%

96%

Proportion of examined Balduina angustifolia in Florida in flower, by month
Month	In flower	Examined	Share	95% interval
Jan	11	15	73%	48% to 89%
Feb	3	5	60%	23% to 88%
Mar	17	21	81%	60% to 92%
Apr	7	8	88%	53% to 98%
May	11	20	55%	34% to 74%
Jun	5	8	63%	31% to 86%
Jul	16	18	89%	67% to 97%
Aug	16	22	73%	52% to 87%
Sep	33	34	97%	85% to 99%
Oct	77	77	100%	95% to 100%
Nov	33	34	97%	85% to 99%
Dec	22	23	96%	79% to 99%

Peak flowering in Oct. Each bar is the share of Balduina angustifolia 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. 251 of 285 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 Balduina angustifolia 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

Balduina angustifolia

coastal plain honeycombhead

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.