iNaturalist's volunteer curators list it as introduced in their Ohio checklist.
Near Geauga County
Range
Where it is recorded
Season shown in 1 of Ohio's 88 counties. Explore Ohio
No result yet (7)
Recorded, too few records for a result (58)
Recorded, season not shown (22)
Season shown (1)
Boundaries: U.S. Census Bureau, 2025 Cartographic Boundary Files, 1:500,000. Show as a table
Counties as a table
Carolina horsenettle by Ohio county: records and mapped range
County
Records
Adams County
22 · Recorded, season not shown
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
92 · Season 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
54 · Recorded, season not shown
Carroll County
Recorded, too few records for a result
Champaign County
Recorded, too few records for a result
Clark County
Recorded, too few records for a result
Clermont County
98 · 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
93 · Recorded, season not shown
Darke County
Recorded, too few records for a result
Defiance County
Recorded, too few records for a result
Delaware County
48 · Recorded, season not shown
Erie County
Recorded, too few records for a result
Fairfield County
26 · Recorded, season not shown
Fayette County
Recorded, too few records for a result
Franklin County
119 · Recorded, season not shown
Fulton County
Recorded, too few records for a result
Gallia County
Recorded, too few records for a result
Geauga County
30 · Recorded, season not shown
Greene County
29 · Recorded, season not shown
Guernsey County
Recorded, too few records for a result
Hamilton County
151 · Recorded, season not shown
Hancock County
Recorded, too few records for a result
Hardin County
Recorded, too few records for a result
Harrison County
No qualifying records yet
Henry County
No qualifying records yet
Highland County
Recorded, too few records for a result
Hocking County
29 · Recorded, season not shown
Holmes County
No qualifying records yet
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
40 · Recorded, season not shown
Lawrence County
Recorded, too few records for a result
Licking County
57 · Recorded, season not shown
Logan County
Recorded, too few records for a result
Lorain County
36 · Recorded, season not shown
Lucas County
42 · Recorded, season not shown
Madison County
Recorded, too few records for a result
Mahoning County
Recorded, too few records for a result
Marion County
Recorded, too few records for a result
Medina County
32 · Recorded, season not shown
Meigs County
Recorded, too few records for a result
Mercer County
Recorded, too few records for a result
Miami County
Recorded, too few records for a result
Monroe County
Recorded, too few records for a result
Montgomery County
38 · 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
Recorded, too few records for a result
Ottawa County
Recorded, too few records for a result
Paulding County
No qualifying records yet
Perry County
No qualifying records yet
Pickaway County
Recorded, too few records for a result
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
Recorded, too few records for a result
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
No qualifying records yet
Stark County
31 · Recorded, season not shown
Summit County
97 · 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
Recorded, too few records for a result
Vinton County
Recorded, too few records for a result
Warren County
46 · 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
36 · Recorded, season not shown
Wyandot County
Recorded, too few records for a result
No mapped range from the range source used, the USGS Gap Analysis Project, which maps land vertebrates only.
Season
When it is recorded
In Geauga County
Not enough evidence
The weeks are still too uncertain to show a season. Based on 30 records in 7 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 Geauga County · records of all species each week, 18,220 in all
Records per week from 30 records in 7 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 Carolina horsenettle in Geauga County each week, and records of all species
Week
Records of Carolina horsenettle
Years recorded
Records of all species
Jan 4–10
0
0
92
Jan 11–17
0
0
20
Jan 18–24
0
0
17
Jan 25–31
1
1
70
Feb 1–7
0
0
24
Feb 8–14
0
0
28
Feb 15–21
0
0
64
Feb 22–28
1
1
24
Mar 1–7
0
0
46
Mar 8–14
3
3
36
Mar 15–21
0
0
71
Mar 22–28
0
0
71
Mar 29 – Apr 4
0
0
165
Apr 5–11
0
0
168
Apr 12–18
0
0
279
Apr 19–25
1
1
375
Apr 26 – May 2
0
0
491
May 3–9
1
1
571
May 10–16
0
0
554
May 17–23
0
0
638
May 24–30
0
0
735
May 31 – Jun 6
0
0
688
Jun 7–13
0
0
844
Jun 14–20
2
2
701
Jun 21–27
1
1
791
Jun 28 – Jul 4
0
0
699
Jul 5–11
0
0
824
Jul 12–18
3
2
712
Jul 19–25
0
0
738
Jul 26 – Aug 1
3
2
811
Aug 2–8
0
0
730
Aug 9–15
2
2
859
Aug 16–22
3
3
600
Aug 23–29
1
1
715
Aug 30 – Sep 5
3
2
713
Sep 6–12
0
0
619
Sep 13–19
0
0
437
Sep 20–26
1
1
388
Sep 27 – Oct 3
2
2
331
Oct 4–10
0
0
258
Oct 11–17
0
0
281
Oct 18–24
2
2
239
Oct 25–31
0
0
187
Nov 1–7
0
0
63
Nov 8–14
0
0
106
Nov 15–21
0
0
58
Nov 22–28
0
0
25
Nov 29 – Dec 5
0
0
42
Dec 6–12
0
0
53
Dec 13–19
0
0
49
Dec 20–26
0
0
29
Dec 27 – Jan 2
0
0
91
Reported in flower
Only 2 records here show flowers, too few to show a flowering season. One needs at least 20 records from 5 different years.
Reported in fruit
Only 1 records here show fruit, too few to show a fruiting season. One needs at least 20 records from 5 different years.
In Ohio
Mid-June to late January, middle week Aug 2–8
Middle week · Aug 2–8
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 2,056 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 1,018 dates. Latest record: December 2025.
Show as a table
Records of Carolina horsenettle in Ohio each week, and records of all species
Week
Records of Carolina horsenettle
Years recorded
Records of all species
Jan 4–10
6
4
6,211
Jan 11–17
4
4
5,146
Jan 18–24
6
5
4,645
Jan 25–31
12
2
4,698
Feb 1–7
12
7
6,023
Feb 8–14
5
2
5,888
Feb 15–21
9
3
5,436
Feb 22–28
6
5
6,846
Mar 1–7
7
3
8,321
Mar 8–14
10
6
10,384
Mar 15–21
7
6
12,620
Mar 22–28
10
6
13,949
Mar 29 – Apr 4
14
5
19,661
Apr 5–11
9
5
26,860
Apr 12–18
6
4
39,925
Apr 19–25
7
6
41,623
Apr 26 – May 2
7
3
56,391
May 3–9
6
4
52,952
May 10–16
1
1
53,785
May 17–23
3
3
57,698
May 24–30
6
3
54,651
May 31 – Jun 6
22
5
53,099
Jun 7–13
31
8
53,700
Jun 14–20
90
9
56,625
Jun 21–27
121
9
55,361
Jun 28 – Jul 4
138
9
58,477
Jul 5–11
160
10
61,336
Jul 12–18
137
10
64,722
Jul 19–25
137
9
69,753
Jul 26 – Aug 1
95
9
59,416
Aug 2–8
82
10
59,712
Aug 9–15
81
9
55,994
Aug 16–22
73
9
54,328
Aug 23–29
70
8
51,772
Aug 30 – Sep 5
71
9
57,167
Sep 6–12
63
9
59,075
Sep 13–19
69
8
54,543
Sep 20–26
52
9
45,860
Sep 27 – Oct 3
83
8
43,180
Oct 4–10
61
9
37,841
Oct 11–17
52
7
30,824
Oct 18–24
38
8
21,156
Oct 25–31
36
8
19,021
Nov 1–7
22
7
14,172
Nov 8–14
27
9
12,621
Nov 15–21
16
6
7,965
Nov 22–28
23
6
8,136
Nov 29 – Dec 5
13
6
6,083
Dec 6–12
9
7
6,004
Dec 13–19
7
4
5,423
Dec 20–26
4
3
5,661
Dec 27 – Jan 2
20
7
8,459
Reported in flower
Usually reported in flower mid-June to mid-September, middle week Jul 12–18.
From 161 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 fruiting season shown here. The weeks are still too uncertain to show a season.
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.
eastern black nightshadeSolanum emulans119 identifications worldwide named one where the other was meant
tomatoSolanum lycopersicum102 identifications worldwide named one where the other was meant
jimsonweedDatura stramonium78 identifications worldwide named one where the other was meant
bittersweet nightshadeSolanum dulcamara46 identifications worldwide named one where the other was meant
bear's footSmallanthus uvedalia38 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
40%49%
Farmland
36%11%
Forest
19%31%
Wetland
2%5%
Grassland and shrub
2%0.9%
Open water
0.7%3%
Barren
0.5%0.6%
From 1,280 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.
