When does alkali heliotrope bloom in Texas?

Most often in February. Across 435 dated, research-grade observations of Heliotropium curassavicum in Texas, the flowering season runs roughly January to December.

Peak February In flower 435 Examined 448 State Texas

Flowering 435 in flower of 448 examined

86%

100%

91%

99%

100%

95%

90%

88%

100%

Proportion of examined Heliotropium curassavicum in Texas in flower, by month
Month	In flower	Examined	Share	95% interval
Jan	12	14	86%	60% to 96%
Feb	13	13	100%	77% to 100%
Mar	52	57	91%	81% to 96%
Apr	131	132	99%	96% to 100%
May	59	59	100%	94% to 100%
Jun	35	35	100%	90% to 100%
Jul	42	42	100%	92% to 100%
Aug	34	34	100%	90% to 100%
Sep	18	19	95%	75% to 99%
Oct	18	20	90%	70% to 97%
Nov	15	17	88%	66% to 97%
Dec	6	6	100%	61% to 100%

Peak flowering in Feb. Each bar is the share of Heliotropium curassavicum 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. 435 of 448 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 Heliotropium curassavicum 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

Heliotropium curassavicum

alkali heliotrope

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.