Season shown in 1 of Ohio's 88 counties. Explore Ohio
No result yet (8)
Recorded, too few records for a result (55)
Recorded, season not shown (24)
Season shown (1)
Boundaries: U.S. Census Bureau, 2025 Cartographic Boundary Files, 1:500,000. Show as a table
Counties as a table
wild teasel by Ohio county: records and mapped range
County
Records
Adams County
Recorded, too few records for a result
Allen County
22 · Recorded, season not shown
Ashland County
Recorded, too few records for a result
Ashtabula County
Recorded, too few records for a result
Athens County
207 · Recorded, season not shown
Auglaize County
Recorded, too few records for a result
Belmont County
Recorded, too few records for a result
Brown County
No qualifying records yet
Butler County
73 · Recorded, season not 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
29 · 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
148 · Recorded, season not shown
Darke County
Recorded, too few records for a result
Defiance County
Recorded, too few records for a result
Delaware County
69 · Season shown
Erie County
20 · Recorded, season not shown
Fairfield County
Recorded, too few records for a result
Fayette County
Recorded, too few records for a result
Franklin County
239 · Recorded, season not shown
Fulton County
Recorded, too few records for a result
Gallia County
Recorded, too few records for a result
Geauga County
44 · Recorded, season not shown
Greene County
41 · Recorded, season not shown
Guernsey County
Recorded, too few records for a result
Hamilton County
80 · Recorded, season not shown
Hancock County
Recorded, too few records for a result
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
Recorded, too few records for a result
Hocking County
Recorded, too few records for a result
Holmes County
No qualifying records yet
Huron County
Recorded, too few records for a result
Jackson County
Recorded, too few records for a result
Jefferson County
Recorded, too few records for a result
Knox County
Recorded, too few records for a result
Lake County
22 · Recorded, season not shown
Lawrence County
No qualifying records yet
Licking County
26 · Recorded, season not shown
Logan County
Recorded, too few records for a result
Lorain County
64 · Recorded, season not shown
Lucas County
38 · Recorded, season not shown
Madison County
Recorded, too few records for a result
Mahoning County
24 · Recorded, season not shown
Marion County
Recorded, too few records for a result
Medina County
52 · Recorded, season not shown
Meigs County
Recorded, too few records for a result
Mercer County
No qualifying records yet
Miami County
23 · Recorded, season not shown
Monroe County
Recorded, too few records for a result
Montgomery County
51 · 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
Recorded, too few records for a result
Pickaway County
Recorded, too few records for a result
Pike County
Recorded, too few records for a result
Portage County
50 · 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
54 · Recorded, season not shown
Summit County
157 · Recorded, season not shown
Trumbull County
Recorded, too few records for a result
Tuscarawas County
Recorded, too few records for a result
Union County
22 · Recorded, season not shown
Van Wert County
No qualifying records yet
Vinton County
Recorded, too few records for a result
Warren County
32 · 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
64 · 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 Erie County
Not enough evidence
The weeks are still too uncertain to show a season. Based on 20 records in 6 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 Erie County · records of all species each week, 14,434 in all
Records per week from 20 records in 6 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 wild teasel in Erie County each week, and records of all species
Week
Records of wild teasel
Years recorded
Records of all species
Jan 4–10
0
0
47
Jan 11–17
1
1
75
Jan 18–24
0
0
52
Jan 25–31
0
0
67
Feb 1–7
0
0
70
Feb 8–14
0
0
21
Feb 15–21
0
0
52
Feb 22–28
0
0
60
Mar 1–7
0
0
90
Mar 8–14
0
0
90
Mar 15–21
0
0
79
Mar 22–28
1
1
93
Mar 29 – Apr 4
0
0
82
Apr 5–11
1
1
499
Apr 12–18
1
1
555
Apr 19–25
2
1
531
Apr 26 – May 2
2
1
590
May 3–9
0
0
519
May 10–16
0
0
765
May 17–23
0
0
697
May 24–30
0
0
548
May 31 – Jun 6
0
0
427
Jun 7–13
0
0
381
Jun 14–20
1
1
384
Jun 21–27
0
0
273
Jun 28 – Jul 4
0
0
316
Jul 5–11
2
2
605
Jul 12–18
0
0
329
Jul 19–25
1
1
514
Jul 26 – Aug 1
1
1
527
Aug 2–8
1
1
409
Aug 9–15
0
0
422
Aug 16–22
3
2
699
Aug 23–29
0
0
309
Aug 30 – Sep 5
0
0
440
Sep 6–12
0
0
392
Sep 13–19
0
0
444
Sep 20–26
0
0
398
Sep 27 – Oct 3
0
0
248
Oct 4–10
0
0
260
Oct 11–17
1
1
148
Oct 18–24
0
0
176
Oct 25–31
0
0
161
Nov 1–7
0
0
149
Nov 8–14
2
1
78
Nov 15–21
0
0
49
Nov 22–28
0
0
72
Nov 29 – Dec 5
0
0
71
Dec 6–12
0
0
27
Dec 13–19
0
0
29
Dec 20–26
0
0
54
Dec 27 – Jan 2
0
0
61
Reported in flower
Only 1 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 5 records here show fruit, too few to show a fruiting season. One needs at least 20 records from 5 different years.
In Ohio
Late March to late October, middle week Jul 19–25
Middle week · Jul 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 2,385 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 1,167 dates. Latest record: December 2025.
Show as a table
Records of wild teasel in Ohio each week, and records of all species
Week
Records of wild teasel
Years recorded
Records of all species
Jan 4–10
9
5
6,211
Jan 11–17
7
4
5,146
Jan 18–24
1
1
4,645
Jan 25–31
6
3
4,698
Feb 1–7
10
6
6,023
Feb 8–14
6
4
5,888
Feb 15–21
9
4
5,436
Feb 22–28
14
5
6,846
Mar 1–7
13
5
8,321
Mar 8–14
16
6
10,384
Mar 15–21
17
6
12,620
Mar 22–28
20
7
13,949
Mar 29 – Apr 4
19
5
19,661
Apr 5–11
57
9
26,860
Apr 12–18
56
8
39,925
Apr 19–25
44
8
41,623
Apr 26 – May 2
93
8
56,391
May 3–9
34
7
52,952
May 10–16
37
7
53,785
May 17–23
57
9
57,698
May 24–30
79
8
54,651
May 31 – Jun 6
40
9
53,099
Jun 7–13
39
8
53,700
Jun 14–20
49
6
56,625
Jun 21–27
59
8
55,361
Jun 28 – Jul 4
83
8
58,477
Jul 5–11
114
10
61,336
Jul 12–18
149
9
64,722
Jul 19–25
169
10
69,753
Jul 26 – Aug 1
133
10
59,416
Aug 2–8
98
9
59,712
Aug 9–15
83
8
55,994
Aug 16–22
64
10
54,328
Aug 23–29
38
9
51,772
Aug 30 – Sep 5
51
8
57,167
Sep 6–12
77
10
59,075
Sep 13–19
59
9
54,543
Sep 20–26
63
9
45,860
Sep 27 – Oct 3
120
9
43,180
Oct 4–10
68
9
37,841
Oct 11–17
47
7
30,824
Oct 18–24
24
8
21,156
Oct 25–31
38
8
19,021
Nov 1–7
35
8
14,172
Nov 8–14
22
7
12,621
Nov 15–21
9
6
7,965
Nov 22–28
17
7
8,136
Nov 29 – Dec 5
7
5
6,083
Dec 6–12
5
4
6,004
Dec 13–19
6
4
5,423
Dec 20–26
1
1
5,661
Dec 27 – Jan 2
14
4
8,459
Reported in flower
Usually reported in flower early July to early October, middle week Jul 26 – Aug 1.
From 93 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.
Identification
How to identify it
Telling it apart
From what Ohio’s records show. Only what the records support is shown.
cutleaf teaselDipsacus laciniatusOften confused in Ohio: 271 identifications in Ohio named one where the other was meant
Bull ThistleCirsium vulgareOften confused in Ohio: 11 identifications in Ohio named one where the other was meant
wild carrotDaucus carota25 identifications worldwide named one where the other was meant
chicoryCichorium intybus20 identifications worldwide named one where the other was meant
curled dockRumex crispus18 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
62%49%
Farmland
26%11%
Forest
9%31%
Wetland
2%5%
Grassland and shrub
0.9%0.9%
Open water
0.7%3%
Barren
0.3%0.6%
From 1,587 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.
