Introduced and assessed as invasive in the lower 48 states
iNaturalist's volunteer curators list it as introduced in their Ohio checklist.
US-RIIS assesses a species as invasive when it causes, or is likely to cause, harm there, or is at least locally abundant and harmful ecologically, economically, or to health.
Season shown in 4 of Ohio's 88 counties. Explore Ohio
No result yet (16)
Recorded, too few records for a result (50)
Recorded, season not shown (18)
Season shown (4)
Boundaries: U.S. Census Bureau, 2025 Cartographic Boundary Files, 1:500,000. Show as a table
Counties as a table
lesser periwinkle by Ohio county: records and mapped range
County
Records
Adams County
Recorded, too few records for a result
Allen County
Recorded, too few records for a result
Ashland County
Recorded, too few records for a result
Ashtabula County
Recorded, too few records for a result
Athens County
97 · Recorded, season not shown
Auglaize County
Recorded, too few records for a result
Belmont County
Recorded, too few records for a result
Brown County
Recorded, too few records for a result
Butler County
135 · Season shown
Carroll County
Recorded, too few records for a result
Champaign County
No qualifying records yet
Clark County
Recorded, too few records for a result
Clermont County
41 · Recorded, season not shown
Clinton County
Recorded, too few records for a result
Columbiana County
Recorded, too few records for a result
Coshocton County
Recorded, too few records for a result
Crawford County
Recorded, too few records for a result
Cuyahoga County
232 · Recorded, season not shown
Darke County
Recorded, too few records for a result
Defiance County
Recorded, too few records for a result
Delaware County
33 · Season shown
Erie County
20 · Season shown
Fairfield County
Recorded, too few records for a result
Fayette County
No qualifying records yet
Franklin County
100 · Recorded, season not shown
Fulton County
No qualifying records yet
Gallia County
Recorded, too few records for a result
Geauga County
35 · Recorded, season not shown
Greene County
23 · Recorded, season not shown
Guernsey County
No qualifying records yet
Hamilton County
89 · Recorded, season not shown
Hancock County
29 · Recorded, season not shown
Hardin County
Recorded, too few records for a result
Harrison County
Recorded, too few records for a result
Henry County
Recorded, too few records for a result
Highland County
No qualifying records yet
Hocking County
45 · Recorded, season not shown
Holmes County
Recorded, too few records for a result
Huron County
Recorded, too few records for a result
Jackson County
No qualifying records yet
Jefferson County
Recorded, too few records for a result
Knox County
Recorded, too few records for a result
Lake County
44 · Recorded, season not shown
Lawrence County
Recorded, too few records for a result
Licking County
23 · Recorded, season not shown
Logan County
Recorded, too few records for a result
Lorain County
41 · Recorded, season not shown
Lucas County
37 · Recorded, season not shown
Madison County
No qualifying records yet
Mahoning County
Recorded, too few records for a result
Marion County
No qualifying records yet
Medina County
Recorded, too few records for a result
Meigs County
Recorded, too few records for a result
Mercer County
No qualifying records yet
Miami County
Recorded, too few records for a result
Monroe County
Recorded, too few records for a result
Montgomery County
43 · Recorded, season not shown
Morgan County
Recorded, too few records for a result
Morrow County
Recorded, too few records for a result
Muskingum County
Recorded, too few records for a result
Noble County
No qualifying records yet
Ottawa County
Recorded, too few records for a result
Paulding County
No qualifying records yet
Perry County
Recorded, too few records for a result
Pickaway County
No qualifying records yet
Pike County
Recorded, too few records for a result
Portage County
39 · Recorded, season not shown
Preble County
Recorded, too few records for a result
Putnam County
No qualifying records yet
Richland County
Recorded, too few records for a result
Ross County
Recorded, too few records for a result
Sandusky County
Recorded, too few records for a result
Scioto County
Recorded, too few records for a result
Seneca County
Recorded, too few records for a result
Shelby County
Recorded, too few records for a result
Stark County
32 · Recorded, season not shown
Summit County
179 · Recorded, season not shown
Trumbull County
Recorded, too few records for a result
Tuscarawas County
Recorded, too few records for a result
Union County
Recorded, too few records for a result
Van Wert County
No qualifying records yet
Vinton County
No qualifying records yet
Warren County
37 · Recorded, season not shown
Washington County
Recorded, too few records for a result
Wayne County
Recorded, too few records for a result
Williams County
Recorded, too few records for a result
Wood County
20 · Season shown
Wyandot County
No qualifying records yet
No mapped range from the range source used, the USGS Gap Analysis Project, which maps land vertebrates only.
Season
When it is recorded
In Warren County
Not enough evidence
The weeks are still too uncertain to show a season. Based on 37 records in 8 of the 10 years from 2016 to 2025, above the minimum of 20 records from 5 different years.
JanFebMarAprMayJunJulAugSepOctNovDec
Show over the bars
Recording in Warren County · records of all species each week, 16,872 in all
Records per week from 37 records in 8 of the 10 years from 2016 to 2025. Shows when people recorded it, not a season or how common it is.
Show as a table
Records of lesser periwinkle in Warren County each week, and records of all species
Week
Records of lesser periwinkle
Years recorded
Records of all species
Jan 4–10
0
0
108
Jan 11–17
0
0
29
Jan 18–24
0
0
28
Jan 25–31
0
0
37
Feb 1–7
0
0
23
Feb 8–14
0
0
38
Feb 15–21
0
0
66
Feb 22–28
0
0
65
Mar 1–7
0
0
53
Mar 8–14
0
0
70
Mar 15–21
0
0
116
Mar 22–28
4
3
117
Mar 29 – Apr 4
8
4
396
Apr 5–11
4
2
254
Apr 12–18
1
1
324
Apr 19–25
2
2
336
Apr 26 – May 2
3
2
539
May 3–9
0
0
323
May 10–16
1
1
423
May 17–23
1
1
420
May 24–30
2
2
378
May 31 – Jun 6
0
0
696
Jun 7–13
0
0
759
Jun 14–20
1
1
727
Jun 21–27
1
1
558
Jun 28 – Jul 4
1
1
552
Jul 5–11
1
1
695
Jul 12–18
1
1
643
Jul 19–25
0
0
564
Jul 26 – Aug 1
0
0
530
Aug 2–8
1
1
491
Aug 9–15
0
0
720
Aug 16–22
0
0
565
Aug 23–29
0
0
534
Aug 30 – Sep 5
1
1
719
Sep 6–12
0
0
619
Sep 13–19
0
0
584
Sep 20–26
1
1
390
Sep 27 – Oct 3
0
0
403
Oct 4–10
0
0
264
Oct 11–17
1
1
277
Oct 18–24
0
0
266
Oct 25–31
0
0
204
Nov 1–7
0
0
159
Nov 8–14
0
0
141
Nov 15–21
0
0
78
Nov 22–28
2
2
220
Nov 29 – Dec 5
0
0
53
Dec 6–12
0
0
58
Dec 13–19
0
0
45
Dec 20–26
0
0
75
Dec 27 – Jan 2
0
0
140
Reported in flower
Only 3 records here show flowers, too few to show a flowering season. One needs at least 20 records from 5 different years.
Reported in fruit
No records here show fruit yet, so there is no fruiting season to show. One needs at least 20 records from 5 different years.
In Ohio
Early March to mid-October, middle week Apr 19–25
Middle week · Apr 19–25
This week · Nov 8–14
JanFebMarAprMayJunJulAugSepOctNovDec
Show over the bars
Recording in Ohio · records of all species each week, 1,691,199 in all
Records per week from 1,938 records in 10 of the 10 years from 2016 to 2025. Shows when people recorded it, not how common it is. The grey bars show how many records of all species were made here each week, so you can see when recording itself was high or low; the season is not adjusted by them.
Recorded on 876 dates. Latest record: December 2025.
Show as a table
Records of lesser periwinkle in Ohio each week, and records of all species
Week
Records of lesser periwinkle
Years recorded
Records of all species
Jan 4–10
6
5
6,211
Jan 11–17
3
2
5,146
Jan 18–24
6
4
4,645
Jan 25–31
4
2
4,698
Feb 1–7
3
2
6,023
Feb 8–14
15
4
5,888
Feb 15–21
11
4
5,436
Feb 22–28
5
4
6,846
Mar 1–7
26
6
8,321
Mar 8–14
40
7
10,384
Mar 15–21
57
7
12,620
Mar 22–28
94
9
13,949
Mar 29 – Apr 4
145
8
19,661
Apr 5–11
213
8
26,860
Apr 12–18
209
10
39,925
Apr 19–25
194
10
41,623
Apr 26 – May 2
205
9
56,391
May 3–9
105
9
52,952
May 10–16
57
8
53,785
May 17–23
41
9
57,698
May 24–30
23
7
54,651
May 31 – Jun 6
22
7
53,099
Jun 7–13
12
7
53,700
Jun 14–20
28
7
56,625
Jun 21–27
9
6
55,361
Jun 28 – Jul 4
12
6
58,477
Jul 5–11
10
4
61,336
Jul 12–18
14
5
64,722
Jul 19–25
13
7
69,753
Jul 26 – Aug 1
10
7
59,416
Aug 2–8
14
6
59,712
Aug 9–15
8
5
55,994
Aug 16–22
14
6
54,328
Aug 23–29
20
8
51,772
Aug 30 – Sep 5
18
8
57,167
Sep 6–12
19
7
59,075
Sep 13–19
26
8
54,543
Sep 20–26
18
8
45,860
Sep 27 – Oct 3
36
8
43,180
Oct 4–10
37
8
37,841
Oct 11–17
22
6
30,824
Oct 18–24
22
6
21,156
Oct 25–31
21
5
19,021
Nov 1–7
12
6
14,172
Nov 8–14
10
6
12,621
Nov 15–21
10
7
7,965
Nov 22–28
9
5
8,136
Nov 29 – Dec 5
13
8
6,083
Dec 6–12
5
5
6,004
Dec 13–19
0
0
5,423
Dec 20–26
3
2
5,661
Dec 27 – Jan 2
9
4
8,459
Reported in flower
Usually reported in flower mid-March to mid-May, middle week Apr 12–18.
From 199 records that show flowers. Not every photo of a plant in flower is marked as flowering, so this shows when people reported it in flower, not when it flowers.
Reported in fruit
No records here show fruit yet, so there is no fruiting season to show. One needs at least 20 records from 5 different years.
What these results show
These results show when people recorded a species, not when or where it occurs. Missing weeks and low counts do not mean absence or scarcity, and counts are not abundance. Contributed records reflect where, when and what people chose to observe.
Identification
How to identify it
Telling it apart
From what Ohio’s records show. Only what the records support is shown.
greater periwinkleVinca majorOften confused in Ohio: 41 identifications in Ohio named one where the other was meant
fortune's spindleEuonymus fortuneiOften confused in Ohio: 37 identifications in Ohio named one where the other was meant
blue phloxPhlox divaricataOften confused in Ohio: 10 identifications in Ohio named one where the other was meant
Eastern TeaberryGaultheria procumbens59 identifications worldwide named one where the other was meant
partridgeberryMitchella repens28 identifications worldwide named one where the other was meant
From iNaturalist’s similar-species counts, refreshed monthly: confusions in Ohio first, then worldwide. Only species with an Ohio result are listed.
Land cover where it is recorded
Land cover
Its recordsAll Ohio records
Developed
63%49%
Forest
33%31%
Wetland
2%5%
Farmland
2%11%
Open water
0.3%3%
Barren
0.1%0.6%
Grassland and shrub
0.1%0.9%
From 1,346 records placed within 100 m, beside all Ohio records placed the same way. People record where they go, so this shows where records come from, not where the species lives. Land cover: USGS Annual NLCD, 2025 (opens in a new tab)
Sources
Where these results come from
Records from iNaturalist research-grade observations and expert-identified GBIF datasets, CC0, CC BY and CC BY-NC. Sources
Seasons use the published method and its evidence thresholds. Methods
A spreadsheet (CSV) with a link to each record, on iNaturalist or GBIF. Records whose location was hidden by the observer or the source are counted but not linked.
