Introduced and assessed as invasive in the lower 48 states
Ohio law lists it as an invasive plant: not native to Ohio, and causing, or likely to cause, economic, environmental or human health harm.
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 0 of Ohio's 88 counties. Explore Ohio
No result yet (9)
Recorded, too few records for a result (56)
Recorded, season not shown (23)
Season shown (0)
Boundaries: U.S. Census Bureau, 2025 Cartographic Boundary Files, 1:500,000. Show as a table
Counties as a table
autumn olive by Ohio county: records and mapped range
County
Records
Adams County
Recorded, too few records for a result
Allen County
21 · Recorded, season not shown
Ashland County
Recorded, too few records for a result
Ashtabula County
Recorded, too few records for a result
Athens County
379 · 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
82 · 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
59 · 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
49 · Recorded, season not shown
Darke County
Recorded, too few records for a result
Defiance County
Recorded, too few records for a result
Delaware County
55 · Recorded, season not shown
Erie County
35 · Recorded, season not shown
Fairfield County
Recorded, too few records for a result
Fayette County
No qualifying records yet
Franklin County
110 · Recorded, season not shown
Fulton County
Recorded, too few records for a result
Gallia County
Recorded, too few records for a result
Geauga County
Recorded, too few records for a result
Greene County
44 · Recorded, season not shown
Guernsey County
Recorded, too few records for a result
Hamilton County
55 · 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
No qualifying records yet
Highland County
Recorded, too few records for a result
Hocking County
39 · Recorded, season not shown
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
29 · Recorded, season not shown
Lawrence County
No qualifying records yet
Licking County
Recorded, too few records for a result
Logan County
Recorded, too few records for a result
Lorain County
33 · Recorded, season not shown
Lucas County
58 · Recorded, season not shown
Madison County
Recorded, too few records for a result
Mahoning County
21 · Recorded, season not shown
Marion County
Recorded, too few records for a result
Medina County
21 · Recorded, season not shown
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
Recorded, too few records for a result
Montgomery County
45 · 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
29 · Recorded, season not shown
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
No qualifying records yet
Portage County
56 · 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
No qualifying records yet
Shelby County
No qualifying records yet
Stark County
53 · Recorded, season not shown
Summit County
114 · 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
No qualifying records yet
Vinton County
Recorded, too few records for a result
Warren County
42 · 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
22 · 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 Delaware County
Mid-April to mid-July, middle week early May, and again late August to early November, middle week late September
Recorded in two separate seasons, each shown with its own early, middle and late weeks.
JanFebMarAprMayJunJulAugSepOctNovDec
Show over the bars
Recording in Delaware County · records of all species each week, 21,087 in all
Records per week from 55 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 autumn olive in Delaware County each week, and records of all species
Week
Records of autumn olive
Years recorded
Records of all species
Jan 4–10
0
0
75
Jan 11–17
0
0
35
Jan 18–24
0
0
37
Jan 25–31
0
0
28
Feb 1–7
0
0
33
Feb 8–14
0
0
56
Feb 15–21
0
0
38
Feb 22–28
0
0
36
Mar 1–7
0
0
73
Mar 8–14
0
0
118
Mar 15–21
0
0
111
Mar 22–28
0
0
120
Mar 29 – Apr 4
0
0
208
Apr 5–11
1
1
304
Apr 12–18
0
0
810
Apr 19–25
1
1
622
Apr 26 – May 2
3
3
561
May 3–9
6
3
539
May 10–16
8
4
620
May 17–23
3
2
560
May 24–30
0
0
640
May 31 – Jun 6
0
0
751
Jun 7–13
2
2
746
Jun 14–20
1
1
593
Jun 21–27
2
1
623
Jun 28 – Jul 4
0
0
725
Jul 5–11
1
1
597
Jul 12–18
1
1
785
Jul 19–25
1
1
848
Jul 26 – Aug 1
0
0
646
Aug 2–8
0
0
665
Aug 9–15
0
0
612
Aug 16–22
1
1
684
Aug 23–29
1
1
775
Aug 30 – Sep 5
0
0
782
Sep 6–12
5
4
1,111
Sep 13–19
2
2
827
Sep 20–26
3
2
663
Sep 27 – Oct 3
5
3
686
Oct 4–10
2
2
576
Oct 11–17
0
0
411
Oct 18–24
0
0
350
Oct 25–31
3
2
245
Nov 1–7
2
2
181
Nov 8–14
1
1
112
Nov 15–21
0
0
101
Nov 22–28
0
0
93
Nov 29 – Dec 5
0
0
55
Dec 6–12
0
0
39
Dec 13–19
0
0
56
Dec 20–26
0
0
39
Dec 27 – Jan 2
0
0
86
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 2 records here show fruit, too few to show a fruiting season. One needs at least 20 records from 5 different years.
In Ohio
Early April to mid-June, middle week early May, and again mid-July to early November, middle week mid-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 2,260 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 autumn olive in Ohio each week, and records of all species
Week
Records of autumn olive
Years recorded
Records of all species
Jan 4–10
0
0
6,211
Jan 11–17
0
0
5,146
Jan 18–24
1
1
4,645
Jan 25–31
1
1
4,698
Feb 1–7
0
0
6,023
Feb 8–14
1
1
5,888
Feb 15–21
3
3
5,436
Feb 22–28
4
1
6,846
Mar 1–7
2
2
8,321
Mar 8–14
3
2
10,384
Mar 15–21
2
2
12,620
Mar 22–28
11
3
13,949
Mar 29 – Apr 4
19
5
19,661
Apr 5–11
23
6
26,860
Apr 12–18
31
6
39,925
Apr 19–25
94
9
41,623
Apr 26 – May 2
216
10
56,391
May 3–9
208
10
52,952
May 10–16
146
9
53,785
May 17–23
126
9
57,698
May 24–30
97
9
54,651
May 31 – Jun 6
28
8
53,099
Jun 7–13
23
8
53,700
Jun 14–20
31
7
56,625
Jun 21–27
18
7
55,361
Jun 28 – Jul 4
18
7
58,477
Jul 5–11
24
7
61,336
Jul 12–18
37
9
64,722
Jul 19–25
31
8
69,753
Jul 26 – Aug 1
33
8
59,416
Aug 2–8
49
8
59,712
Aug 9–15
56
8
55,994
Aug 16–22
75
8
54,328
Aug 23–29
88
9
51,772
Aug 30 – Sep 5
63
8
57,167
Sep 6–12
94
8
59,075
Sep 13–19
71
9
54,543
Sep 20–26
86
9
45,860
Sep 27 – Oct 3
94
9
43,180
Oct 4–10
84
10
37,841
Oct 11–17
62
9
30,824
Oct 18–24
43
8
21,156
Oct 25–31
40
9
19,021
Nov 1–7
43
8
14,172
Nov 8–14
25
8
12,621
Nov 15–21
16
7
7,965
Nov 22–28
21
8
8,136
Nov 29 – Dec 5
7
5
6,083
Dec 6–12
8
5
6,004
Dec 13–19
2
2
5,423
Dec 20–26
0
0
5,661
Dec 27 – Jan 2
2
1
8,459
Reported in flower
No flowering season shown here. Most records come from a single year, so a season is not shown yet.
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.
Amur honeysuckleLonicera maackiiOften confused in Ohio: 23 identifications in Ohio named one where the other was meant
border privetLigustrum obtusifolium75 identifications worldwide named one where the other was meant
Morrow's honeysuckleLonicera morrowii68 identifications worldwide named one where the other was meant
winterberry hollyIlex verticillata60 identifications worldwide named one where the other was meant
Common PrivetLigustrum vulgare56 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
43%49%
Forest
32%31%
Farmland
18%11%
Wetland
4%5%
Open water
1%3%
Barren
1%0.6%
Grassland and shrub
1%0.9%
From 1,514 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.
