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 1 of Ohio's 88 counties. Explore Ohio
No result yet (25)
Recorded, too few records for a result (57)
Recorded, season not shown (5)
Season shown (1)
Boundaries: U.S. Census Bureau, 2025 Cartographic Boundary Files, 1:500,000. Show as a table
Counties as a table
Black Medick 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
40 · 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
36 · Recorded, season not shown
Carroll County
No qualifying records yet
Champaign County
Recorded, too few records for a result
Clark County
Recorded, too few records for a result
Clermont County
Recorded, too few records for a result
Clinton County
No qualifying records yet
Columbiana County
Recorded, too few records for a result
Coshocton County
No qualifying records yet
Crawford County
Recorded, too few records for a result
Cuyahoga County
31 · Recorded, season not shown
Darke County
No qualifying records yet
Defiance County
Recorded, too few records for a result
Delaware County
Recorded, too few records for a result
Erie County
Recorded, too few records for a result
Fairfield County
No qualifying records yet
Fayette County
Recorded, too few records for a result
Franklin County
82 · Recorded, season not shown
Fulton County
No qualifying records yet
Gallia County
No qualifying records yet
Geauga County
Recorded, too few records for a result
Greene County
Recorded, too few records for a result
Guernsey County
Recorded, too few records for a result
Hamilton County
60 · Season 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
No qualifying records yet
Hocking County
Recorded, too few records for a result
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
No qualifying records yet
Knox County
Recorded, too few records for a result
Lake County
Recorded, too few records for a result
Lawrence County
Recorded, too few records for a result
Licking County
Recorded, too few records for a result
Logan County
No qualifying records yet
Lorain County
Recorded, too few records for a result
Lucas County
Recorded, too few records for a result
Madison County
Recorded, too few records for a result
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
No qualifying records yet
Mercer County
Recorded, too few records for a result
Miami County
Recorded, too few records for a result
Monroe County
No qualifying records yet
Montgomery County
Recorded, too few records for a result
Morgan County
No qualifying records yet
Morrow County
No qualifying records yet
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
Recorded, too few records for a result
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
No qualifying records yet
Stark County
Recorded, too few records for a result
Summit County
40 · 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
No qualifying records yet
Warren County
Recorded, too few records for a result
Washington County
Recorded, too few records for a result
Wayne County
Recorded, too few records for a result
Williams County
No qualifying records yet
Wood County
Recorded, too few records for a result
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 Athens County
Not enough evidence
The weeks are still too uncertain to show a season. Based on 40 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 Athens County · records of all species each week, 51,499 in all
Records per week from 40 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 Black Medick in Athens County each week, and records of all species
Week
Records of Black Medick
Years recorded
Records of all species
Jan 4–10
0
0
74
Jan 11–17
0
0
132
Jan 18–24
0
0
107
Jan 25–31
0
0
219
Feb 1–7
0
0
392
Feb 8–14
2
1
232
Feb 15–21
1
1
235
Feb 22–28
0
0
361
Mar 1–7
1
1
532
Mar 8–14
1
1
466
Mar 15–21
0
0
593
Mar 22–28
1
1
950
Mar 29 – Apr 4
1
1
1,265
Apr 5–11
0
0
1,616
Apr 12–18
2
2
1,804
Apr 19–25
2
2
1,926
Apr 26 – May 2
4
3
2,291
May 3–9
0
0
1,407
May 10–16
1
1
1,408
May 17–23
6
3
2,542
May 24–30
1
1
1,821
May 31 – Jun 6
3
2
798
Jun 7–13
1
1
775
Jun 14–20
3
2
830
Jun 21–27
3
2
700
Jun 28 – Jul 4
1
1
549
Jul 5–11
0
0
664
Jul 12–18
1
1
869
Jul 19–25
0
0
700
Jul 26 – Aug 1
0
0
673
Aug 2–8
0
0
613
Aug 9–15
0
0
871
Aug 16–22
0
0
807
Aug 23–29
0
0
1,289
Aug 30 – Sep 5
1
1
2,925
Sep 6–12
1
1
2,530
Sep 13–19
0
0
2,417
Sep 20–26
0
0
1,530
Sep 27 – Oct 3
0
0
1,628
Oct 4–10
0
0
1,836
Oct 11–17
0
0
1,920
Oct 18–24
0
0
825
Oct 25–31
0
0
930
Nov 1–7
1
1
881
Nov 8–14
2
2
846
Nov 15–21
0
0
573
Nov 22–28
0
0
536
Nov 29 – Dec 5
0
0
270
Dec 6–12
0
0
982
Dec 13–19
0
0
158
Dec 20–26
0
0
106
Dec 27 – Jan 2
0
0
95
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
Late April to late September, middle week Jun 7–13
Middle week · Jun 7–13
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 723 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 465 dates. Latest record: November 2025.
Show as a table
Records of Black Medick in Ohio each week, and records of all species
Week
Records of Black Medick
Years recorded
Records of all species
Jan 4–10
0
0
6,211
Jan 11–17
0
0
5,146
Jan 18–24
0
0
4,645
Jan 25–31
0
0
4,698
Feb 1–7
0
0
6,023
Feb 8–14
3
2
5,888
Feb 15–21
1
1
5,436
Feb 22–28
0
0
6,846
Mar 1–7
1
1
8,321
Mar 8–14
3
3
10,384
Mar 15–21
3
2
12,620
Mar 22–28
2
2
13,949
Mar 29 – Apr 4
5
4
19,661
Apr 5–11
1
1
26,860
Apr 12–18
7
3
39,925
Apr 19–25
9
6
41,623
Apr 26 – May 2
16
3
56,391
May 3–9
29
8
52,952
May 10–16
31
6
53,785
May 17–23
57
8
57,698
May 24–30
54
10
54,651
May 31 – Jun 6
76
8
53,099
Jun 7–13
71
8
53,700
Jun 14–20
66
7
56,625
Jun 21–27
46
8
55,361
Jun 28 – Jul 4
43
8
58,477
Jul 5–11
19
6
61,336
Jul 12–18
26
8
64,722
Jul 19–25
19
6
69,753
Jul 26 – Aug 1
16
7
59,416
Aug 2–8
14
7
59,712
Aug 9–15
10
5
55,994
Aug 16–22
11
6
54,328
Aug 23–29
5
3
51,772
Aug 30 – Sep 5
12
6
57,167
Sep 6–12
9
6
59,075
Sep 13–19
8
4
54,543
Sep 20–26
8
5
45,860
Sep 27 – Oct 3
9
5
43,180
Oct 4–10
9
5
37,841
Oct 11–17
4
3
30,824
Oct 18–24
2
1
21,156
Oct 25–31
1
1
19,021
Nov 1–7
6
4
14,172
Nov 8–14
7
4
12,621
Nov 15–21
0
0
7,965
Nov 22–28
1
1
8,136
Nov 29 – Dec 5
1
1
6,083
Dec 6–12
0
0
6,004
Dec 13–19
1
1
5,423
Dec 20–26
0
0
5,661
Dec 27 – Jan 2
1
1
8,459
Reported in flower
No flowering season shown here. The weeks are still too uncertain to show a season.
Reported in fruit
Only 14 records here show fruit, too few to show a fruiting season. 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.
Lesser hop trefoilTrifolium dubiumOften confused in Ohio: 40 identifications in Ohio named one where the other was meant
hop trefoilTrifolium campestreOften confused in Ohio: 38 identifications in Ohio named one where the other was meant
white cloverTrifolium repensOften confused in Ohio: 22 identifications in Ohio named one where the other was meant
large hop cloverTrifolium aureum146 identifications worldwide named one where the other was meant
bird's-foot trefoilLotus corniculatus116 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.
Months not reported
Jan: no record
Feb: recorded
Mar: recorded
Apr: recorded
May: recorded
Jun: recorded
Jul: recorded
Aug: recorded
Sep: recorded
Oct: recorded
Nov: recorded
Dec: recorded
Not reported in Ohio in January, 2016 to 2025.
Land cover where it is recorded
Land cover
Its recordsAll Ohio records
Developed
82%49%
Forest
9%31%
Farmland
7%11%
Wetland
1%5%
Open water
0.4%3%
Barren
0.2%0.6%
Grassland and shrub
0.2%0.9%
From 453 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.
