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Karlo Fen State Nature Preserve


Preserving 18 acres in Summit County

Nestled between the base of sand and gravel deposits from glacial outwash, this small preserve supports an unusually rich diversity of bog and fen species including Bebb’s sedge (Carex bebbii), blazing star (Liatris spicata), autumn willow (Salix serissima) and the deciduous conifer known as the tamarack (Larix laricina).

Amongst hummocks of sphagnum moss, more acidic loving plants such as the grass pink (Calopogon tuberosus) and rose pogonia (Pogonia ophioglossoides) orchids can be found along with the insectivorous plant, round-leaved sundew (Drosera rotundifolia).

Situated adjacent to Nimisila Reservoir, Karlo fen is a small remnant of what was once a more frequent ecosystem found in the region. Suburban development south of the Akron area has all but surrounded this small pocket of Ohio’s glacial past. Careful management and monitoring allow this diverse preserve to survive for preservation of rare species, research and nature study.

Local Directions

City of Green, Summit County, adjacent to Portage Lakes State Park. Due to the sensitivity of the fen community, access to Karlo Fen State Nature Preserve is by permit only from the Division.

Special Features

  • Rich diversity of bog and fen species
  • Pocket of Ohio’s glacial past

Managing Agency

Managed by Summit Metro Parks

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