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What is in flower in Ohio — late summer and autumn

8 of the 10 on this chart are in flower in Ohio today, 22 August.

  • Ironweedat its peak now
  • Bonesetat its peak now
  • Cardinal Flowerpeaks 28 August
  • Joe-Pye Weedpeaked 15 August
  • Great Blue Lobeliapeaks 1 September
  • Common Ragweedpeaks 1 September
  • Canada Goldenrodpeaks 5 September
  • Stiff Goldenrodpeaks 10 September

Opening in the next fortnight

  • New England Asterfirst flowers about 25 August
  • Aromatic Asterfirst flowers about 5 September
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Late summer and autumn Joe-Pye WeedEutrochium purpureum · Where: wet meadows, stream edges and wood bordersIn flower — peak Aug 15 IronweedVernonia gigantea · Where: wet pastures, ditches and field edgesIn flower — peak Aug 20 BonesetEupatorium perfoliatum · Where: wet meadows and ditchesIn flower — peak Aug 25 Cardinal FlowerLobelia cardinalis · Where: stream banks, wet ditches and pond edgesIn flower — peak Aug 28 Great Blue LobeliaLobelia siphilitica · Where: wet ground, seeps and stream edgesIn flower — peak Sep 1 Canada GoldenrodSolidago canadensis · Where: old fields, roadsides — the dominant plant of an abandoned Ohio fieldIn flower — peak Sep 5 Stiff GoldenrodSolidago rigida · Where: dry prairie remnants and plantingsIn flower — peak Sep 10 New England AsterSymphyotrichum novae-angliae · Where: moist meadows, roadsides and plantingsIn flower — peak Sep 25 Aromatic AsterSymphyotrichum oblongifolium · Where: dry banks, limestone ground and plantingsIn flower — peak Oct 5 Common RagweedAmbrosia artemisiifolia · Where: disturbed ground, field margins, construction lotsIn flower — peak Sep 1
In flowerTodayThe pale tick inside a bar is that plant's peak. ✦ marks a species that is not native to Ohio. Hover a name for where to find it.

The last nectar of the year, and the most important. Goldenrods and asters are what fuel the southbound monarch flight and what the bumblebee queens feed on before they overwinter. Goldenrod does not cause hay fever — its pollen is heavy and insect-carried — and ragweed, which does, flowers at exactly the same time.

Why this group has its own gauge

It is the only bloom group still lit in October. The chart above carries 10 species, sliced out of the full 54-row bloom chart.

The rows on this chart
Species In season Peak Where
Joe-Pye Weed 20 July – 15 September 15 August wet meadows, stream edges and wood borders
Ironweed 25 July – 20 September 20 August wet pastures, ditches and field edges
Boneset 1 August – 25 September 25 August wet meadows and ditches
Cardinal Flower 1 August – 25 September 28 August stream banks, wet ditches and pond edges
Great Blue Lobelia 5 August – 1 October 1 September wet ground, seeps and stream edges
Canada Goldenrod 5 August – 10 October 5 September old fields, roadsides — the dominant plant of an abandoned Ohio field
Stiff Goldenrod 15 August – 5 October 10 September dry prairie remnants and plantings
New England Aster 25 August – 25 October 25 September moist meadows, roadsides and plantings
Aromatic Aster 5 September – 5 November 5 October dry banks, limestone ground and plantings
Common Ragweed 5 August – 5 October 1 September disturbed ground, field margins, construction lots

Where this sits

The full picture is on Ohio flower bloom times, which carries every group on one chart. Each mark on the breadcrumb strip at the top of the site links to the page for its own group.