When does American germander bloom in Texas?

Most often in June. Across 521 dated, research-grade observations of Teucrium canadense in Texas, the flowering season runs roughly April to October.

Peak June In flower 521 Examined 576 State Texas

Flowering 521 in flower of 576 examined

40%

57%

87%

93%

98%

92%

85%

88%

91%

64%

75%

Proportion of examined Teucrium canadense in Texas in flower, by month
Month	In flower	Examined	Share	95% interval
Jan	4	10	40%	17% to 69%
Feb	3	4	too few examined
Mar	8	14	57%	33% to 79%
Apr	58	67	87%	76% to 93%
May	103	111	93%	86% to 96%
Jun	195	198	98%	96% to 99%
Jul	70	76	92%	84% to 96%
Aug	22	26	85%	66% to 94%
Sep	22	25	88%	70% to 96%
Oct	20	22	91%	72% to 97%
Nov	7	11	64%	35% to 85%
Dec	9	12	75%	47% to 91%

Peak flowering in Jun. Each bar is the share of Teucrium canadense 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. 521 of 576 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 Texas found Teucrium canadense 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

Teucrium canadense

American germander

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.