Flowering plantsIn Ohio
American chestnut
Castanea dentata (Marshall) Borkh.
- Kingdom
- Plantae
- Phylum
- Tracheophyta
- Class
- Magnoliopsida
- Order
- Fagales
- Family
- Fagaceae
- Genus
- Castanea
Range
Where it is recorded
Not enough evidence yet
Recorded in 31 of Ohio's 88 counties, with too few records in each for a result.
- No result yet (57)
- Recorded, too few records for a result (31)
- Recorded, season not shown (0)
- Season shown (0)
Counties as a table
| County | Records |
|---|---|
| Adams County | Recorded, too few records for a result |
| Allen County | Recorded, too few records for a result |
| Ashland County | No qualifying records yet |
| Ashtabula County | Recorded, too few records for a result |
| Athens County | Recorded, too few records for a result |
| Auglaize County | No qualifying records yet |
| Belmont County | No qualifying records yet |
| Brown County | No qualifying records yet |
| Butler County | No qualifying records yet |
| Carroll County | No qualifying records yet |
| Champaign County | No qualifying records yet |
| Clark County | No qualifying records yet |
| Clermont County | No qualifying records yet |
| Clinton County | No qualifying records yet |
| Columbiana County | Recorded, too few records for a result |
| Coshocton County | Recorded, too few records for a result |
| Crawford County | No qualifying records yet |
| Cuyahoga County | Recorded, too few records for a result |
| Darke County | No qualifying records yet |
| Defiance County | No qualifying records yet |
| Delaware County | No qualifying records yet |
| Erie County | No qualifying records yet |
| Fairfield County | Recorded, too few records for a result |
| Fayette County | No qualifying records yet |
| Franklin County | Recorded, too few records for a result |
| Fulton County | No qualifying records yet |
| Gallia County | Recorded, too few records for a result |
| Geauga County | Recorded, too few records for a result |
| Greene County | No qualifying records yet |
| Guernsey County | No qualifying records yet |
| Hamilton County | No qualifying records yet |
| Hancock County | No qualifying records yet |
| Hardin County | No qualifying records yet |
| 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 | No qualifying records yet |
| Huron County | No qualifying records yet |
| Jackson County | Recorded, too few records for a result |
| Jefferson County | No qualifying records yet |
| Knox County | No qualifying records yet |
| Lake County | Recorded, too few records for a result |
| 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 | No qualifying records yet |
| Madison County | No qualifying records yet |
| Mahoning County | Recorded, too few records for a result |
| Marion County | No qualifying records yet |
| Medina County | No qualifying records yet |
| Meigs County | No qualifying records yet |
| Mercer County | No qualifying records yet |
| Miami County | No qualifying records yet |
| Monroe County | Recorded, too few records for a result |
| Montgomery County | No qualifying records yet |
| Morgan County | Recorded, too few records for a result |
| Morrow County | No qualifying records yet |
| Muskingum County | Recorded, too few records for a result |
| Noble County | No qualifying records yet |
| Ottawa County | No qualifying records yet |
| Paulding County | No qualifying records yet |
| Perry County | Recorded, too few records for a result |
| Pickaway County | No qualifying records yet |
| Pike County | No qualifying records yet |
| Portage County | Recorded, too few records for a result |
| Preble County | No qualifying records yet |
| 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 | No qualifying records yet |
| Scioto County | Recorded, too few records for a result |
| 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 | Recorded, too few records for a result |
| Tuscarawas County | Recorded, too few records for a result |
| Union County | No qualifying records yet |
| Van Wert County | No qualifying records yet |
| Vinton County | Recorded, too few records for a result |
| Warren County | No qualifying records yet |
| Washington County | No qualifying records yet |
| Wayne County | Recorded, too few records for a result |
| Williams County | No qualifying records yet |
| Wood County | No qualifying records yet |
| 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
Mid-August to early November, middle week late 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.
This week · Nov 8–14
Show over the bars
Records per week from 407 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
| Week | Records of American chestnut | 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 | 0 | 0 | 4,698 |
| Feb 1–7 | 1 | 1 | 6,023 |
| Feb 8–14 | 1 | 1 | 5,888 |
| Feb 15–21 | 3 | 2 | 5,436 |
| Feb 22–28 | 1 | 1 | 6,846 |
| Mar 1–7 | 1 | 1 | 8,321 |
| Mar 8–14 | 1 | 1 | 10,384 |
| Mar 15–21 | 0 | 0 | 12,620 |
| Mar 22–28 | 0 | 0 | 13,949 |
| Mar 29 – Apr 4 | 3 | 3 | 19,661 |
| Apr 5–11 | 0 | 0 | 26,860 |
| Apr 12–18 | 0 | 0 | 39,925 |
| Apr 19–25 | 2 | 2 | 41,623 |
| Apr 26 – May 2 | 4 | 3 | 56,391 |
| May 3–9 | 4 | 4 | 52,952 |
| May 10–16 | 8 | 5 | 53,785 |
| May 17–23 | 15 | 6 | 57,698 |
| May 24–30 | 15 | 7 | 54,651 |
| May 31 – Jun 6 | 25 | 7 | 53,099 |
| Jun 7–13 | 15 | 7 | 53,700 |
| Jun 14–20 | 17 | 9 | 56,625 |
| Jun 21–27 | 20 | 10 | 55,361 |
| Jun 28 – Jul 4 | 18 | 8 | 58,477 |
| Jul 5–11 | 18 | 8 | 61,336 |
| Jul 12–18 | 7 | 5 | 64,722 |
| Jul 19–25 | 12 | 6 | 69,753 |
| Jul 26 – Aug 1 | 10 | 5 | 59,416 |
| Aug 2–8 | 8 | 4 | 59,712 |
| Aug 9–15 | 10 | 4 | 55,994 |
| Aug 16–22 | 13 | 5 | 54,328 |
| Aug 23–29 | 7 | 5 | 51,772 |
| Aug 30 – Sep 5 | 19 | 7 | 57,167 |
| Sep 6–12 | 9 | 5 | 59,075 |
| Sep 13–19 | 17 | 7 | 54,543 |
| Sep 20–26 | 14 | 7 | 45,860 |
| Sep 27 – Oct 3 | 23 | 8 | 43,180 |
| Oct 4–10 | 19 | 6 | 37,841 |
| Oct 11–17 | 28 | 6 | 30,824 |
| Oct 18–24 | 9 | 4 | 21,156 |
| Oct 25–31 | 7 | 4 | 19,021 |
| Nov 1–7 | 10 | 6 | 14,172 |
| Nov 8–14 | 3 | 2 | 12,621 |
| Nov 15–21 | 1 | 1 | 7,965 |
| Nov 22–28 | 3 | 3 | 8,136 |
| Nov 29 – Dec 5 | 0 | 0 | 6,083 |
| Dec 6–12 | 1 | 1 | 6,004 |
| Dec 13–19 | 0 | 0 | 5,423 |
| Dec 20–26 | 3 | 3 | 5,661 |
| Dec 27 – Jan 2 | 1 | 1 | 8,459 |
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 fruiting season shown here. Most records come from a single year, so a season is not shown yet.
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.
Relatives
In the same genus
Other Castanea recorded in Ohio
Identification
How to identify it
Look-alikes
Land cover
Often confused with
- Chinese chestnut Castanea mollissimaOften confused in Ohio: 41 identifications in Ohio named one where the other was meant
- American beech Fagus grandifoliaOften confused in Ohio: 11 identifications in Ohio named one where the other was meant
- Allegheny Chinquapin Castanea pumila108 identifications worldwide named one where the other was meant
- Sawtooth oak Quercus acutissima42 identifications worldwide named one where the other was meant
- chestnut oak Quercus montana37 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 |
|---|---|
| Forest | 76%31% |
| Developed | 19%49% |
| Farmland | 4%11% |
| Wetland | 1%5% |
From 99 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
- See it on iNaturalist (opens in a new tab)OpenPhenology is independent and not affiliated with iNaturalist.
Records behind the Ohio result
407 records from 2 datasets.
- iNaturalist Research-grade Observations (opens in a new tab) · iNaturalist.org · 400 recordsiNaturalist contributors, iNaturalist (2026). iNaturalist Research-grade Observations. iNaturalist.org. Occurrence dataset https://doi.org/10.15468/ab3s5x accessed via GBIF.org on 2026-11-13.
- iNaturalist observations (opens in a new tab) · iNaturalist.org · 7 recordsiNaturalist. Available from https://www.inaturalist.org. Accessed 2026-11-13
To cite: the GBIF download doi:10.15468/dl.y2jkt8 (opens in a new tab).
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.