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 16 of Ohio's 88 counties. Explore Ohio
No result yet (1)
Recorded, too few records for a result (62)
Recorded, season not shown (9)
Season shown (16)
Boundaries: U.S. Census Bureau, 2025 Cartographic Boundary Files, 1:500,000. Show as a table
Counties as a table
chicory 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
25 · Recorded, season not shown
Athens County
302 · 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
175 · Season 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
54 · Season 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
282 · 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
22 · Season shown
Fairfield County
44 · Recorded, season not shown
Fayette County
Recorded, too few records for a result
Franklin County
262 · Season shown
Fulton County
Recorded, too few records for a result
Gallia County
Recorded, too few records for a result
Geauga County
32 · Season shown
Greene County
73 · Recorded, season not shown
Guernsey County
Recorded, too few records for a result
Hamilton County
149 · 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
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
Recorded, too few records for a result
Knox County
Recorded, too few records for a result
Lake County
56 · Season shown
Lawrence County
Recorded, too few records for a result
Licking County
30 · Recorded, season not shown
Logan County
Recorded, too few records for a result
Lorain County
64 · Season shown
Lucas County
135 · 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
36 · Season shown
Meigs County
Recorded, too few records for a result
Mercer County
Recorded, too few records for a result
Miami County
29 · Season shown
Monroe County
No qualifying records yet
Montgomery County
90 · Season 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
25 · Season shown
Paulding County
Recorded, too few records for a result
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
42 · 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
Recorded, too few records for a result
Stark County
48 · Recorded, season not shown
Summit County
346 · Season 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
49 · Season 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
127 · Season 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 Greene County
Mid-August to mid-October, middle week mid-September
Recorded in two separate seasons, each shown with its own early, middle and late weeks. An earlier season is not shown: the weeks are still too uncertain.
JanFebMarAprMayJunJulAugSepOctNovDec
Show over the bars
Recording in Greene County · records of all species each week, 31,407 in all
Records per week from 73 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 chicory in Greene County each week, and records of all species
Week
Records of chicory
Years recorded
Records of all species
Jan 4–10
0
0
97
Jan 11–17
0
0
49
Jan 18–24
0
0
37
Jan 25–31
0
0
55
Feb 1–7
0
0
82
Feb 8–14
0
0
90
Feb 15–21
0
0
186
Feb 22–28
0
0
151
Mar 1–7
0
0
124
Mar 8–14
0
0
238
Mar 15–21
0
0
299
Mar 22–28
0
0
338
Mar 29 – Apr 4
0
0
561
Apr 5–11
0
0
537
Apr 12–18
0
0
738
Apr 19–25
0
0
793
Apr 26 – May 2
0
0
1,090
May 3–9
1
1
778
May 10–16
0
0
721
May 17–23
0
0
889
May 24–30
0
0
932
May 31 – Jun 6
0
0
889
Jun 7–13
0
0
1,186
Jun 14–20
5
3
1,205
Jun 21–27
5
4
1,059
Jun 28 – Jul 4
3
3
1,150
Jul 5–11
4
3
1,279
Jul 12–18
5
4
1,164
Jul 19–25
8
6
1,228
Jul 26 – Aug 1
3
3
1,533
Aug 2–8
2
2
1,324
Aug 9–15
2
2
1,105
Aug 16–22
4
3
957
Aug 23–29
2
2
942
Aug 30 – Sep 5
3
3
932
Sep 6–12
5
5
992
Sep 13–19
10
3
1,194
Sep 20–26
3
3
870
Sep 27 – Oct 3
2
2
677
Oct 4–10
1
1
614
Oct 11–17
2
1
533
Oct 18–24
2
2
305
Oct 25–31
1
1
307
Nov 1–7
0
0
214
Nov 8–14
0
0
227
Nov 15–21
0
0
155
Nov 22–28
0
0
110
Nov 29 – Dec 5
0
0
86
Dec 6–12
0
0
36
Dec 13–19
0
0
46
Dec 20–26
0
0
117
Dec 27 – Jan 2
0
0
186
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
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 June to mid-October, middle week Aug 23–29
Middle week · Aug 23–29
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 3,696 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 1,082 dates. Latest record: December 2025.
Show as a table
Records of chicory in Ohio each week, and records of all species
Week
Records of chicory
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
1
1
6,023
Feb 8–14
0
0
5,888
Feb 15–21
1
1
5,436
Feb 22–28
0
0
6,846
Mar 1–7
0
0
8,321
Mar 8–14
2
1
10,384
Mar 15–21
0
0
12,620
Mar 22–28
0
0
13,949
Mar 29 – Apr 4
0
0
19,661
Apr 5–11
2
1
26,860
Apr 12–18
1
1
39,925
Apr 19–25
0
0
41,623
Apr 26 – May 2
3
2
56,391
May 3–9
1
1
52,952
May 10–16
0
0
53,785
May 17–23
0
0
57,698
May 24–30
1
1
54,651
May 31 – Jun 6
9
4
53,099
Jun 7–13
20
7
53,700
Jun 14–20
65
8
56,625
Jun 21–27
111
9
55,361
Jun 28 – Jul 4
178
10
58,477
Jul 5–11
218
10
61,336
Jul 12–18
251
9
64,722
Jul 19–25
208
10
69,753
Jul 26 – Aug 1
148
10
59,416
Aug 2–8
184
10
59,712
Aug 9–15
166
10
55,994
Aug 16–22
136
9
54,328
Aug 23–29
163
10
51,772
Aug 30 – Sep 5
218
10
57,167
Sep 6–12
349
10
59,075
Sep 13–19
318
10
54,543
Sep 20–26
209
10
45,860
Sep 27 – Oct 3
217
10
43,180
Oct 4–10
178
10
37,841
Oct 11–17
151
10
30,824
Oct 18–24
71
9
21,156
Oct 25–31
49
8
19,021
Nov 1–7
35
8
14,172
Nov 8–14
20
8
12,621
Nov 15–21
8
3
7,965
Nov 22–28
2
1
8,136
Nov 29 – Dec 5
0
0
6,083
Dec 6–12
0
0
6,004
Dec 13–19
0
0
5,423
Dec 20–26
0
0
5,661
Dec 27 – Jan 2
2
2
8,459
Reported in flower
Usually reported in flower late June to mid-October, middle week Aug 30 – Sep 5.
From 347 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
Only 17 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.
CornflowerCentaurea cyanusOften confused in Ohio: 12 identifications in Ohio named one where the other was meant
Perennial Sow ThistleSonchus arvensis56 identifications worldwide named one where the other was meant
common dandelionTaraxacum officinale44 identifications worldwide named one where the other was meant
woodland lettuceLactuca floridana37 identifications worldwide named one where the other was meant
prickly lettuceLactuca serriola31 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
72%49%
Farmland
15%11%
Forest
11%31%
Barren
0.9%0.6%
Wetland
0.9%5%
Grassland and shrub
0.6%0.9%
Open water
0.4%3%
From 2,465 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.
