When does Herb-of-Grace bloom in Florida?

Most often in March. Across 139 dated, research-grade observations of Bacopa monnieri in Florida, the flowering season runs roughly January to December.

Peak March In flower 139 Examined 155 State Florida

Flowering 139 in flower of 155 examined

Proportion of examined Bacopa monnieri in Florida in flower, by month
Month In flower Examined Share 95% interval
Jan 11 12 92% 65% to 99%
Feb 11 14 79% 52% to 92%
Mar 14 14 100% 78% to 100%
Apr 17 17 100% 82% to 100%
May 23 24 96% 80% to 99%
Jun 10 11 91% 62% to 98%
Jul 8 8 100% 68% to 100%
Aug 5 7 71% 36% to 92%
Sep 14 15 93% 70% to 99%
Oct 10 14 71% 45% to 88%
Nov 7 9 78% 45% to 94%
Dec 9 10 90% 60% to 98%

Peak flowering in Mar. Each bar is the share of Bacopa monnieri 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. 139 of 155 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 Bacopa monnieri 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

Sourcesevery claim on this page

  1. 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.
  2. World Flora Online Plant List. The accepted name. CC0. Retrieved 2026-07-12.