When does Lawn daisy bloom in Oregon?

Most often in July. Across 1,203 dated, research-grade observations of Bellis perennis in Oregon, the flowering season runs roughly February to September.

Peak July In flower 1,203 Examined 1,303 State Oregon

Flowering 1,203 in flower of 1,303 examined

68%

83%

90%

97%

99%

100%

96%

87%

67%

55%

79%

Proportion of examined Bellis perennis in Oregon in flower, by month
Month	In flower	Examined	Share	95% interval
Jan	42	62	68%	55% to 78%
Feb	75	90	83%	74% to 90%
Mar	173	192	90%	85% to 94%
Apr	322	332	97%	95% to 98%
May	328	330	99%	98% to 100%
Jun	123	124	99%	96% to 100%
Jul	42	42	100%	92% to 100%
Aug	22	23	96%	79% to 99%
Sep	13	15	87%	62% to 96%
Oct	16	24	67%	47% to 82%
Nov	17	31	55%	38% to 71%
Dec	30	38	79%	64% to 89%

Peak flowering in Jul. Each bar is the share of Bellis perennis in Oregon 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. 1,203 of 1,303 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 Oregon found Bellis perennis in flower, not a forecast. It is computed only from observations made in Oregon, 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 Oregon. 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.