General Plant Information (Edit)
Plant Habit: Fern
Life cycle: Perennial
Sun Requirements: Partial or Dappled Shade
Partial Shade to Full Shade
Full Shade
Water Preferences: Wet
Wet Mesic
Mesic
Soil pH Preferences: Slightly acid (6.1 – 6.5)
Neutral (6.6 – 7.3)
Minimum cold hardiness: Zone 5a -28.9 °C (-20 °F) to -26.1 °C (-15 °F)
Maximum recommended zone: Zone 9b
Plant Height: 3 to 4 feet
Plant Spread: 2 to 3 feet
Leaves: Semi-evergreen
Underground structures: Rhizome
Suitable Locations: Bog gardening
Uses: Groundcover
Resistances: Deer Resistant
Rabbit Resistant
Flood Resistant
Propagation: Other methods: Division

Image
Common names
  • Log Fern

Photo Gallery
Location: Greer Spring, MO
Date: 2019-04-06
Location: Downingtown, Pennsylvania
Date: 2022-07-30
paired sori (spore-producing structures) under leaves
Location: Downingtown, Pennsylvania
Date: 2022-07-30
my specimen at the back of my yard is good-sized
Location: Downingtown, Pennsylvania
Date: 2020-07-17
sori under leaves to bear spores, non-flower structure
Location: Tennessee
photo courtesy of Sunlight Gardens, www.sunlightgardens.com
Location: Downingtown, Pennsylvania
Date: 2018-09-19
specimen in back perennial border
Location: Jenkins Arboretum in Berwyn, Pennsylvania
Date: 2013-07-05
a group
Location: Downingtown, Pennsylvania
Date: 2019-04-23
expanded fiddleheads

Courtesy Crownsville Nursery
  • Uploaded by vic

Photo Courtesy of Lazy S'S Farm Nursery.
  • Uploaded by Joy

Photo Courtesy of Lazy S'S Farm Nursery.
  • Uploaded by Joy
Location: Downingtown, Pennsylvania
Date: 2020-07-17
mature plant in a border
Location: Downingtown, Pennsylvania
Date: 2020-07-17
sori on the underside of the frond
Location: Jenkins Arboretum in Berwyn, Pennsylvania
Date: 2012-06-16
fronds
Comments:
  • Posted by ILPARW (southeast Pennsylvania - Zone 6b) on Sep 21, 2018 8:11 AM concerning plant:
    Log Fern is an uncommon species that is mostly native to the southeastern USA, but it also grows up into Illinois, Indiana, southwest Michigan, western New York & Pennsylvania & New Jersey, and spots in New England in moist or wet woodlands and swamps. It is a fairly tall fern about, 3 to 4 feet high, with upright, arching triangular fronds. The foliage is dark green, sort of glossy, and of a firm, thick texture. Its sori (spore producing structures) are kidney-shaped spots under the leaves. There are scales on the petioles (leaf stems) that are brown with a dark central stripe. It does produce some short creeping rhizomes (underground stems) but this fern spreads very slowly and is "well-behaved" next to some species that spread like crazy. The plant crown can be divided in spring or fall to propagate. While it is found in wet or very moist soils in nature, it does well in mesic, rich soil that is acid or neutral in a regular garden. I have one in my backyard and it is a handsome plant. A client let me take an offshoot. It is sold by some native plant nurseries. Some large, diverse conventional nurseries may carry some.

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