When does crane-fly orchid bloom in North Carolina?

Most often in August. Across 547 dated, research-grade observations of Tipularia discolor in North Carolina, the flowering season runs roughly July to August.

Peak August In flower 547 Examined 2,578 State North Carolina

Flowering 547 in flower of 2,578 examined

76%

95%

17%

Proportion of examined Tipularia discolor in North Carolina in flower, by month
Month	In flower	Examined	Share	95% interval
Jan	0	274	0%	0% to 1%
Feb	0	244	0%	0% to 2%
Mar	0	308	0%	0% to 1%
Apr	1	150	1%	0% to 4%
May	0	24	0%	0% to 14%
Jun	0	2	too few examined
Jul	132	173	76%	69% to 82%
Aug	400	421	95%	93% to 97%
Sep	14	81	17%	11% to 27%
Oct	0	185	0%	0% to 2%
Nov	0	410	0%	0% to 1%
Dec	0	306	0%	0% to 1%

Peak flowering in Aug. Each bar is the share of Tipularia discolor in North Carolina 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. 547 of 2,578 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 North Carolina found Tipularia discolor in flower, not a forecast. It is computed only from observations made in North Carolina, 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

Tipularia discolor

crane-fly orchid

Sourcesevery claim on this page

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