When does threelobe false mallow bloom in Texas?

Most often in March. Across 358 dated, research-grade observations of Malvastrum coromandelianum in Texas, the flowering season runs roughly February to October.

Peak March In flower 358 Examined 435 State Texas

Flowering 358 in flower of 435 examined

67%

85%

95%

83%

85%

89%

87%

89%

81%

80%

70%

Proportion of examined Malvastrum coromandelianum in Texas in flower, by month
Month	In flower	Examined	Share	95% interval
Jan	6	9	67%	35% to 88%
Feb	11	13	85%	58% to 96%
Mar	21	22	95%	78% to 99%
Apr	87	105	83%	75% to 89%
May	41	48	85%	73% to 93%
Jun	32	36	89%	75% to 96%
Jul	20	23	87%	68% to 95%
Aug	25	28	89%	73% to 96%
Sep	25	31	81%	64% to 91%
Oct	45	56	80%	68% to 89%
Nov	26	37	70%	54% to 83%
Dec	19	27	70%	52% to 84%

Peak flowering in Mar. Each bar is the share of Malvastrum coromandelianum 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. 358 of 435 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 Malvastrum coromandelianum 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

Malvastrum coromandelianum

threelobe false mallow

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.