When does Lawn daisy bloom in Washington?

Most often in June. Across 1,104 dated, research-grade observations of Bellis perennis in Washington, the flowering season runs roughly February to December.

Peak June In flower 1,104 Examined 1,165 State Washington

Flowering 1,104 in flower of 1,165 examined

78%

85%

96%

98%

100%

98%

83%

84%

78%

92%

Proportion of examined Bellis perennis in Washington in flower, by month
Month	In flower	Examined	Share	95% interval
Jan	46	59	78%	66% to 87%
Feb	61	72	85%	75% to 91%
Mar	124	129	96%	91% to 98%
Apr	304	309	98%	96% to 99%
May	286	291	98%	96% to 99%
Jun	125	125	100%	97% to 100%
Jul	50	51	98%	90% to 100%
Aug	19	23	83%	63% to 93%
Sep	16	19	84%	62% to 94%
Oct	21	27	78%	59% to 89%
Nov	18	23	78%	58% to 90%
Dec	34	37	92%	79% to 97%

Peak flowering in Jun. Each bar is the share of Bellis perennis in Washington 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. 1,104 of 1,165 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 Washington found Bellis perennis in flower, not a forecast. It is computed only from observations made in Washington, 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 Washington. 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.