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 (54)
Recorded, too few records for a result (32)
Recorded, season not shown (1)
Season shown (1)
Boundaries: U.S. Census Bureau, 2025 Cartographic Boundary Files, 1:500,000. Show as a table
Counties as a table
Grey Field-speedwell by Ohio county: records and mapped range
County
Records
Adams County
No qualifying records yet
Allen County
No qualifying records yet
Ashland County
No qualifying records yet
Ashtabula County
No qualifying records yet
Athens County
Recorded, too few records for a result
Auglaize County
No qualifying records yet
Belmont County
Recorded, too few records for a result
Brown County
No qualifying records yet
Butler County
Recorded, too few records for a result
Carroll County
No qualifying records yet
Champaign County
No qualifying records yet
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
No qualifying records yet
Coshocton County
No qualifying records yet
Crawford County
No qualifying records yet
Cuyahoga County
Recorded, too few records for a result
Darke County
Recorded, too few records for a result
Defiance County
No qualifying records yet
Delaware County
Recorded, too few records for a result
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
27 · Season shown
Fulton County
No qualifying records yet
Gallia County
No qualifying records yet
Geauga County
No qualifying records yet
Greene County
Recorded, too few records for a result
Guernsey County
No qualifying records yet
Hamilton County
25 · Recorded, season not 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
Recorded, too few records for a result
Highland County
No qualifying records yet
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
No qualifying records yet
Jefferson County
No qualifying records yet
Knox County
No qualifying records yet
Lake County
No qualifying records yet
Lawrence County
No qualifying records yet
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
No qualifying records yet
Marion County
Recorded, too few records for a result
Medina County
No qualifying records yet
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
No qualifying records yet
Noble County
No qualifying records yet
Ottawa County
No qualifying records yet
Paulding County
No qualifying records yet
Perry County
No qualifying records yet
Pickaway County
Recorded, too few records for a result
Pike County
No qualifying records yet
Portage County
No qualifying records yet
Preble County
No qualifying records yet
Putnam County
No qualifying records yet
Richland County
No qualifying records yet
Ross County
No qualifying records yet
Sandusky County
No qualifying records yet
Scioto County
No qualifying records yet
Seneca County
No qualifying records yet
Shelby County
No qualifying records yet
Stark County
Recorded, too few records for a result
Summit County
Recorded, too few records for a result
Trumbull County
No qualifying records yet
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
No qualifying records yet
Warren County
Recorded, too few records for a result
Washington County
Recorded, too few records for a result
Wayne County
No qualifying records yet
Williams County
No qualifying records yet
Wood County
Recorded, too few records for a result
Wyandot County
No qualifying records yet
No mapped range from the range source used, the USGS Gap Analysis Project, which maps land vertebrates only.
Season
When it is recorded
In Ohio
Not enough evidence
The weeks are still too uncertain to show a season. Based on 193 records in 9 of the 10 years from 2016 to 2025, above the minimum of 20 records from 5 different years.
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 193 records in 9 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 Grey Field-speedwell in Ohio each week, and records of all species
Week
Records of Grey Field-speedwell
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
1
1
5,888
Feb 15–21
1
1
5,436
Feb 22–28
7
2
6,846
Mar 1–7
7
4
8,321
Mar 8–14
13
5
10,384
Mar 15–21
36
8
12,620
Mar 22–28
18
6
13,949
Mar 29 – Apr 4
27
7
19,661
Apr 5–11
17
6
26,860
Apr 12–18
27
8
39,925
Apr 19–25
6
5
41,623
Apr 26 – May 2
12
5
56,391
May 3–9
6
4
52,952
May 10–16
4
3
53,785
May 17–23
0
0
57,698
May 24–30
2
2
54,651
May 31 – Jun 6
1
1
53,099
Jun 7–13
0
0
53,700
Jun 14–20
0
0
56,625
Jun 21–27
0
0
55,361
Jun 28 – Jul 4
0
0
58,477
Jul 5–11
0
0
61,336
Jul 12–18
0
0
64,722
Jul 19–25
0
0
69,753
Jul 26 – Aug 1
0
0
59,416
Aug 2–8
1
1
59,712
Aug 9–15
0
0
55,994
Aug 16–22
0
0
54,328
Aug 23–29
0
0
51,772
Aug 30 – Sep 5
0
0
57,167
Sep 6–12
0
0
59,075
Sep 13–19
0
0
54,543
Sep 20–26
0
0
45,860
Sep 27 – Oct 3
1
1
43,180
Oct 4–10
2
2
37,841
Oct 11–17
1
1
30,824
Oct 18–24
0
0
21,156
Oct 25–31
0
0
19,021
Nov 1–7
0
0
14,172
Nov 8–14
1
1
12,621
Nov 15–21
0
0
7,965
Nov 22–28
1
1
8,136
Nov 29 – Dec 5
0
0
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
0
0
8,459
Reported in flower
Usually reported in flower mid-March to late April, middle week Apr 5–11.
From 22 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 1 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.
bird's-eye speedwellVeronica persicaOften confused in Ohio: 55 identifications in Ohio named one where the other was meant
corn speedwellVeronica arvensisOften confused in Ohio: 11 identifications in Ohio named one where the other was meant
Ivy-leaved SpeedwellVeronica hederifolia72 identifications worldwide named one where the other was meant
henbit deadnettleLamium amplexicaule37 identifications worldwide named one where the other was meant
ground-ivyGlechoma hederacea24 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: no record
Jul: no record
Aug: recorded
Sep: recorded
Oct: recorded
Nov: recorded
Dec: recorded
Not reported in Ohio in January and June to July, 2016 to 2025.
Time of day it is recorded
midnight6 amnoon6 pm
From 192 Ohio records with a time. Most records are made when people are outside, so night and early-morning species are under-recorded.
Land cover where it is recorded
Land cover
Its recordsAll Ohio records
Developed
84%49%
Farmland
11%11%
Forest
5%31%
Open water
0.8%3%
From 123 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.
