Season shown in 3 of Ohio's 88 counties. Explore Ohio
No result yet (11)
Recorded, too few records for a result (57)
Recorded, season not shown (17)
Season shown (3)
Boundaries: U.S. Census Bureau, 2025 Cartographic Boundary Files, 1:500,000. Show as a table
Counties as a table
black-eyed Susan 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
47 · 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
52 · 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
45 · 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
104 · Season shown
Darke County
Recorded, too few records for a result
Defiance County
Recorded, too few records for a result
Delaware County
52 · Recorded, season not shown
Erie County
Recorded, too few records for a result
Fairfield County
Recorded, too few records for a result
Fayette County
No qualifying records yet
Franklin County
149 · Season shown
Fulton County
No qualifying records yet
Gallia County
Recorded, too few records for a result
Geauga County
21 · Recorded, season not shown
Greene County
47 · Recorded, season not shown
Guernsey County
Recorded, too few records for a result
Hamilton County
182 · Recorded, season not shown
Hancock County
21 · Recorded, season not shown
Hardin County
Recorded, too few records for a result
Harrison County
Recorded, too few records for a result
Henry County
No qualifying records yet
Highland County
Recorded, too few records for a result
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
Recorded, too few records for a result
Jefferson County
No qualifying records yet
Knox County
Recorded, too few records for a result
Lake County
30 · Recorded, season not shown
Lawrence County
Recorded, too few records for a result
Licking County
26 · Recorded, season not shown
Logan County
Recorded, too few records for a result
Lorain County
41 · Recorded, season not shown
Lucas County
366 · 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
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
No qualifying records yet
Montgomery County
22 · Recorded, season not shown
Morgan County
No qualifying records yet
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
Recorded, too few records for a result
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
28 · 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 · Season shown
Summit County
163 · Recorded, season not shown
Trumbull County
Recorded, too few records for a result
Tuscarawas County
No qualifying records yet
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
31 · 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
152 · 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 Summit County
Not enough evidence
The weeks are still too uncertain to show a season. Based on 163 records in 10 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 Summit County · records of all species each week, 106,876 in all
Records per week from 163 records in 10 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-eyed Susan in Summit County each week, and records of all species
Week
Records of black-eyed Susan
Years recorded
Records of all species
Jan 4–10
0
0
711
Jan 11–17
0
0
665
Jan 18–24
0
0
601
Jan 25–31
0
0
526
Feb 1–7
0
0
608
Feb 8–14
0
0
619
Feb 15–21
0
0
629
Feb 22–28
0
0
748
Mar 1–7
0
0
728
Mar 8–14
0
0
852
Mar 15–21
1
1
1,055
Mar 22–28
0
0
1,007
Mar 29 – Apr 4
0
0
1,005
Apr 5–11
0
0
1,654
Apr 12–18
0
0
2,454
Apr 19–25
0
0
2,699
Apr 26 – May 2
1
1
3,970
May 3–9
0
0
3,569
May 10–16
0
0
4,053
May 17–23
1
1
3,509
May 24–30
0
0
4,045
May 31 – Jun 6
3
1
2,874
Jun 7–13
1
1
3,158
Jun 14–20
4
3
3,796
Jun 21–27
9
5
3,501
Jun 28 – Jul 4
22
7
3,968
Jul 5–11
29
8
3,632
Jul 12–18
17
9
4,051
Jul 19–25
15
8
3,855
Jul 26 – Aug 1
16
9
2,908
Aug 2–8
14
4
3,828
Aug 9–15
6
5
3,583
Aug 16–22
3
2
3,535
Aug 23–29
0
0
2,939
Aug 30 – Sep 5
0
0
2,840
Sep 6–12
5
4
2,758
Sep 13–19
4
4
2,761
Sep 20–26
1
1
2,646
Sep 27 – Oct 3
2
2
2,089
Oct 4–10
1
1
2,317
Oct 11–17
1
1
1,944
Oct 18–24
2
2
1,314
Oct 25–31
3
3
1,272
Nov 1–7
0
0
786
Nov 8–14
0
0
761
Nov 15–21
1
1
654
Nov 22–28
0
0
703
Nov 29 – Dec 5
1
1
503
Dec 6–12
0
0
447
Dec 13–19
0
0
496
Dec 20–26
0
0
522
Dec 27 – Jan 2
0
0
728
Reported in flower
No flowering season shown here. The weeks are still too uncertain to show a season.
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
Early June to mid-August, middle week early July, and again early September to late October, middle week late September
Recorded in two separate seasons, each shown with its own early, middle and late weeks.
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 2,466 records in 10 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-eyed Susan in Ohio each week, and records of all species
Week
Records of black-eyed Susan
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
0
0
5,888
Feb 15–21
0
0
5,436
Feb 22–28
0
0
6,846
Mar 1–7
0
0
8,321
Mar 8–14
0
0
10,384
Mar 15–21
1
1
12,620
Mar 22–28
0
0
13,949
Mar 29 – Apr 4
2
2
19,661
Apr 5–11
3
2
26,860
Apr 12–18
1
1
39,925
Apr 19–25
5
5
41,623
Apr 26 – May 2
9
5
56,391
May 3–9
2
2
52,952
May 10–16
5
3
53,785
May 17–23
7
4
57,698
May 24–30
3
3
54,651
May 31 – Jun 6
20
5
53,099
Jun 7–13
42
8
53,700
Jun 14–20
104
10
56,625
Jun 21–27
178
9
55,361
Jun 28 – Jul 4
267
10
58,477
Jul 5–11
293
10
61,336
Jul 12–18
170
10
64,722
Jul 19–25
155
10
69,753
Jul 26 – Aug 1
121
10
59,416
Aug 2–8
105
9
59,712
Aug 9–15
67
9
55,994
Aug 16–22
59
9
54,328
Aug 23–29
34
6
51,772
Aug 30 – Sep 5
37
10
57,167
Sep 6–12
54
10
59,075
Sep 13–19
75
10
54,543
Sep 20–26
117
10
45,860
Sep 27 – Oct 3
167
8
43,180
Oct 4–10
186
8
37,841
Oct 11–17
100
8
30,824
Oct 18–24
29
7
21,156
Oct 25–31
16
8
19,021
Nov 1–7
14
6
14,172
Nov 8–14
9
6
12,621
Nov 15–21
3
2
7,965
Nov 22–28
2
2
8,136
Nov 29 – Dec 5
3
2
6,083
Dec 6–12
0
0
6,004
Dec 13–19
0
0
5,423
Dec 20–26
1
1
5,661
Dec 27 – Jan 2
0
0
8,459
Reported in flower
Usually reported in flower mid-June to mid-August, middle week early July. A later season is not shown: most records are from one year.
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.
orange coneflowerRudbeckia fulgidaOften confused in Ohio: 314 identifications in Ohio named one where the other was meant
brown-eyed SusanRudbeckia trilobaOften confused in Ohio: 130 identifications in Ohio named one where the other was meant
sweet black-eyed SusanRudbeckia subtomentosaOften confused in Ohio: 48 identifications in Ohio named one where the other was meant
grey-headed coneflowerRatibida pinnataOften confused in Ohio: 23 identifications in Ohio named one where the other was meant
clasping coneflowerRudbeckia amplexicaulis546 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: no record
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 to February, 2016 to 2025.
Land cover where it is recorded
Land cover
Its recordsAll Ohio records
Developed
63%49%
Farmland
23%11%
Forest
11%31%
Wetland
1%5%
Grassland and shrub
1%0.9%
Barren
0.5%0.6%
Open water
0.5%3%
From 1,627 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)
Finer identifications
Some Ohio records of this species were identified to a variety:
Rudbeckia hirta var. pulcherrimaweedy black-eyed susanvariety
Every one of these records counts toward black-eyed Susan's season above.
Why some records go further than species
Many plants vary from place to place. Botanists name these groups at three levels below species: subspecies, variety and form, from the broadest difference to the smallest. Observers and experts only identify a record that far when it shows enough detail to tell them apart. Records without that detail count at the species level.
Names: Catalogue of Life.
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.
