When does Turk's cap bloom in Texas?

Most often in July. Across 2,324 dated, research-grade observations of Malvaviscus arboreus in Texas, the flowering season runs roughly June to November.

Peak July In flower 2,324 Examined 4,789 State Texas

Flowering 2,324 in flower of 4,789 examined

51%

48%

30%

21%

52%

94%

98%

96%

93%

81%

78%

67%

Proportion of examined Malvaviscus arboreus in Texas in flower, by month
Month	In flower	Examined	Share	95% interval
Jan	118	231	51%	45% to 57%
Feb	80	167	48%	40% to 55%
Mar	93	305	30%	26% to 36%
Apr	373	1800	21%	19% to 23%
May	454	875	52%	49% to 55%
Jun	146	156	94%	89% to 96%
Jul	139	142	98%	94% to 99%
Aug	109	113	96%	91% to 99%
Sep	200	216	93%	88% to 95%
Oct	358	444	81%	77% to 84%
Nov	181	231	78%	73% to 83%
Dec	73	109	67%	58% to 75%

Peak flowering in Jul. Each bar is the share of Malvaviscus arboreus 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. 2,324 of 4,789 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 Malvaviscus arboreus 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

Malvaviscus arboreus

Turk's cap

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.