When does Lawn daisy bloom in California?

Most often in June. Across 2,674 dated, research-grade observations of Bellis perennis in California, the flowering season runs roughly January to December.

Peak June In flower 2,674 Examined 2,742 State California

Flowering 2,674 in flower of 2,742 examined

98%

97%

98%

99%

100%

98%

94%

93%

95%

Proportion of examined Bellis perennis in California in flower, by month
Month	In flower	Examined	Share	95% interval
Jan	257	263	98%	95% to 99%
Feb	449	463	97%	95% to 98%
Mar	441	451	98%	96% to 99%
Apr	504	512	98%	97% to 99%
May	342	345	99%	97% to 100%
Jun	139	139	100%	97% to 100%
Jul	94	96	98%	93% to 99%
Aug	52	53	98%	90% to 100%
Sep	109	116	94%	88% to 97%
Oct	75	81	93%	85% to 97%
Nov	83	87	95%	89% to 98%
Dec	129	136	95%	90% to 97%

Peak flowering in Jun. Each bar is the share of Bellis perennis in California 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. 2,674 of 2,742 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 California found Bellis perennis in flower, not a forecast. It is computed only from observations made in California, 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

Bellis perennis

Lawn daisy

Sourcesevery claim on this page

GBIF (iNaturalist Research-grade Observations). Dated flowering annotations in California. 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.