When does lesser periwinkle bloom in New Jersey?

Most often in April. Across 230 dated, research-grade observations of Vinca minor in New Jersey, the flowering season runs roughly March to May.

Peak April In flower 230 Examined 299 State New Jersey

Flowering 230 in flower of 299 examined

20%

94%

98%

85%

15%

33%

38%

29%

Proportion of examined Vinca minor in New Jersey in flower, by month
Month	In flower	Examined	Share	95% interval
Jan	1	5	20%	4% to 62%
Feb	2	2	too few examined
Mar	66	70	94%	86% to 98%
Apr	117	119	98%	94% to 100%
May	33	39	85%	70% to 93%
Jun	0	6	0%	0% to 39%
Jul	2	13	15%	4% to 42%
Aug	2	6	33%	10% to 70%
Sep	0	6	0%	0% to 39%
Oct	0	11	0%	0% to 26%
Nov	3	8	38%	14% to 69%
Dec	4	14	29%	12% to 55%

Peak flowering in Apr. Each bar is the share of Vinca minor in New Jersey 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. 230 of 299 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 New Jersey found Vinca minor in flower, not a forecast. It is computed only from observations made in New Jersey, 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

Vinca minor

lesser periwinkle

Sourcesevery claim on this page

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