Flowering plantsIn Montgomery County, Ohio

Prairie dock

Silphium terebinthinaceum Jacq.

Prairie dock in all of Ohio
prairie dock (Silphium terebinthinaceum)
(c) Frank Mayfield, some rights reserved (CC BY-SA) · CC BY-SA 4.0 (opens in a new tab) · iNaturalist (opens in a new tab)
Kingdom
Plantae
Phylum
Tracheophyta
Near Montgomery County

Range

Where it is recorded

Season shown in 1 of Ohio's 88 counties. Explore Ohio

  • No result yet (40)
  • Recorded, too few records for a result (41)
  • Recorded, season not shown (6)
  • Season shown (1)
Boundaries: U.S. Census Bureau, 2025 Cartographic Boundary Files, 1:500,000. Show as a table
Counties as a table
prairie dock by Ohio county: records and mapped range
CountyRecords
Adams County57 · Recorded, season not shown
Allen CountyRecorded, too few records for a result
Ashland CountyRecorded, too few records for a result
Ashtabula CountyNo qualifying records yet
Athens CountyRecorded, too few records for a result
Auglaize CountyNo qualifying records yet
Belmont CountyNo qualifying records yet
Brown CountyNo qualifying records yet
Butler CountyRecorded, too few records for a result
Carroll CountyNo qualifying records yet
Champaign County27 · Recorded, season not shown
Clark CountyRecorded, too few records for a result
Clermont CountyRecorded, too few records for a result
Clinton CountyNo qualifying records yet
Columbiana CountyNo qualifying records yet
Coshocton CountyNo qualifying records yet
Crawford CountyRecorded, too few records for a result
Cuyahoga CountyRecorded, too few records for a result
Darke CountyRecorded, too few records for a result
Defiance CountyNo qualifying records yet
Delaware CountyRecorded, too few records for a result
Erie CountyRecorded, too few records for a result
Fairfield CountyRecorded, too few records for a result
Fayette CountyNo qualifying records yet
Franklin County47 · Recorded, season not shown
Fulton CountyRecorded, too few records for a result
Gallia CountyNo qualifying records yet
Geauga CountyRecorded, too few records for a result
Greene CountyRecorded, too few records for a result
Guernsey CountyNo qualifying records yet
Hamilton County53 · Recorded, season not shown
Hancock CountyRecorded, too few records for a result
Hardin CountyNo qualifying records yet
Harrison CountyNo qualifying records yet
Henry CountyNo qualifying records yet
Highland CountyRecorded, too few records for a result
Hocking CountyNo qualifying records yet
Holmes CountyNo qualifying records yet
Huron CountyNo qualifying records yet
Jackson CountyNo qualifying records yet
Jefferson CountyNo qualifying records yet
Knox CountyRecorded, too few records for a result
Lake CountyRecorded, too few records for a result
Lawrence CountyNo qualifying records yet
Licking CountyRecorded, too few records for a result
Logan CountyNo qualifying records yet
Lorain CountyRecorded, too few records for a result
Lucas CountyRecorded, too few records for a result
Madison CountyRecorded, too few records for a result
Mahoning CountyRecorded, too few records for a result
Marion CountyRecorded, too few records for a result
Medina CountyRecorded, too few records for a result
Meigs CountyNo qualifying records yet
Mercer CountyNo qualifying records yet
Miami CountyRecorded, too few records for a result
Monroe CountyNo qualifying records yet
Montgomery County21 · Recorded, season not shown
Morgan CountyNo qualifying records yet
Morrow CountyNo qualifying records yet
Muskingum CountyNo qualifying records yet
Noble CountyNo qualifying records yet
Ottawa CountyRecorded, too few records for a result
Paulding CountyNo qualifying records yet
Perry CountyNo qualifying records yet
Pickaway CountyRecorded, too few records for a result
Pike CountyNo qualifying records yet
Portage CountyRecorded, too few records for a result
Preble CountyRecorded, too few records for a result
Putnam CountyNo qualifying records yet
Richland CountyRecorded, too few records for a result
Ross CountyNo qualifying records yet
Sandusky CountyRecorded, too few records for a result
Scioto CountyRecorded, too few records for a result
Seneca CountyRecorded, too few records for a result
Shelby CountyNo qualifying records yet
Stark CountyRecorded, too few records for a result
Summit County35 · Season shown
Trumbull CountyNo qualifying records yet
Tuscarawas CountyNo qualifying records yet
Union CountyRecorded, too few records for a result
Van Wert CountyNo qualifying records yet
Vinton CountyNo qualifying records yet
Warren CountyRecorded, too few records for a result
Washington CountyNo qualifying records yet
Wayne CountyRecorded, too few records for a result
Williams CountyRecorded, too few records for a result
Wood County24 · Recorded, season not shown
Wyandot CountyRecorded, 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 Montgomery County

Not enough evidence

The weeks are still too uncertain to show a season. Based on 21 records in 8 of the 10 years from 2016 to 2025, above the minimum of 20 records from 5 different years.
Show over the bars
Recording in Montgomery County · records of all species each week, 33,949 in all

Records per week from 21 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 prairie dock in Montgomery County each week, and records of all species
WeekRecords of prairie dockYears recordedRecords of all species
Jan 4–1000165
Jan 11–170071
Jan 18–2400156
Jan 25–3100194
Feb 1–700127
Feb 8–1411144
Feb 15–2100124
Feb 22–2800137
Mar 1–700122
Mar 8–1400221
Mar 15–2100272
Mar 22–2800269
Mar 29 – Apr 400482
Apr 5–1100674
Apr 12–1800853
Apr 19–2500812
Apr 26 – May 2001,172
May 3–900849
May 10–1611850
May 17–2300880
May 24–30001,224
May 31 – Jun 6001,255
Jun 7–13111,217
Jun 14–20221,247
Jun 21–27111,015
Jun 28 – Jul 411990
Jul 5–11001,130
Jul 12–18111,190
Jul 19–25221,323
Jul 26 – Aug 100961
Aug 2–8111,177
Aug 9–15331,587
Aug 16–22001,241
Aug 23–29001,131
Aug 30 – Sep 5221,299
Sep 6–12221,342
Sep 13–19001,020
Sep 20–2600722
Sep 27 – Oct 332624
Oct 4–1000674
Oct 11–1700557
Oct 18–2400436
Oct 25–3100389
Nov 1–700296
Nov 8–1400279
Nov 15–2100235
Nov 22–2800210
Nov 29 – Dec 50094
Dec 6–120069
Dec 13–190085
Dec 20–2600104
Dec 27 – Jan 200252

Reported in flower

Only 1 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

Mid-May to early October, middle week Aug 2–8

Show over the bars
Recording in Ohio · records of all species each week, 1,691,199 in all

Records per week from 697 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 491 dates. Latest record: November 2025.

Show as a table
Records of prairie dock in Ohio each week, and records of all species
WeekRecords of prairie dockYears recordedRecords of all species
Jan 4–10116,211
Jan 11–17005,146
Jan 18–24004,645
Jan 25–31004,698
Feb 1–7116,023
Feb 8–14225,888
Feb 15–21005,436
Feb 22–28116,846
Mar 1–7008,321
Mar 8–140010,384
Mar 15–211112,620
Mar 22–280013,949
Mar 29 – Apr 40019,661
Apr 5–110026,860
Apr 12–180039,925
Apr 19–251141,623
Apr 26 – May 25356,391
May 3–99552,952
May 10–169453,785
May 17–238557,698
May 24–3021654,651
May 31 – Jun 620653,099
Jun 7–1314853,700
Jun 14–2030756,625
Jun 21–2728655,361
Jun 28 – Jul 431658,477
Jul 5–1137861,336
Jul 12–1834964,722
Jul 19–2549869,753
Jul 26 – Aug 144959,416
Aug 2–848959,712
Aug 9–1546955,994
Aug 16–2242954,328
Aug 23–2940851,772
Aug 30 – Sep 530957,167
Sep 6–1237959,075
Sep 13–1930954,543
Sep 20–2617745,860
Sep 27 – Oct 322743,180
Oct 4–1012437,841
Oct 11–179530,824
Oct 18–245321,156
Oct 25–312219,021
Nov 1–77414,172
Nov 8–141112,621
Nov 15–21007,965
Nov 22–28008,136
Nov 29 – Dec 5116,083
Dec 6–12226,004
Dec 13–19005,423
Dec 20–26005,661
Dec 27 – Jan 2008,459

Reported in flower

Usually reported in flower late June to mid-September, middle week Aug 23–29.

From 30 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 4 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.

Relatives

In the same genus

Other Silphium recorded in Montgomery County

Identification

How to identify it

Telling it apart

From what Ohio’s records show. Only what the records support is shown.

Often confused with

  • compass plant Silphium laciniatumOften confused in Ohio: 10 identifications in Ohio named one where the other was meant
  • cup plant Silphium perfoliatum59 identifications worldwide named one where the other was meant
  • wild quinine Parthenium integrifolium19 identifications worldwide named one where the other was meant
  • stiff-leaved goldenrod Solidago rigida18 identifications worldwide named one where the other was meant
  • prairie rosinweed Silphium integrifolium13 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 coverIts recordsAll Ohio records
Developed43%49%
Farmland31%11%
Forest18%31%
Wetland6%5%
Grassland and shrub2%0.9%

From 395 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

697 records from 2 datasets.

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.