Western Oak Fern - Gymnocarpium dryopteris

Western Oak Fern

Gymnocarpium dryopteris

This delicate-looking native fern that spreads gracefully by long creeping rhizomes rather than from a central crown: its three-parted fronds emerge from unexpected spots across the ground, creating a naturally flowing, informal groundcover that softens shaded areas beautifully.

  • Fronds emerge from long creeping rhizomes rather than a central crown, producing a flowing, naturalistic groundcover effect
  • Hairy fiddleheads rise individually from underground rhizomes; each develops into one of three frond divisions
  • Delicate pale green fronds in spring deepen in colour with age
  • Deciduous, dies back cleanly in fall; reappears reliably each spring
Size
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Plant Characteristics

Sunlight
Shade
Soil Moisture
Dry
Hardiness Zone
3 – 8
Mature Height (meters)
0.1 – 0.3
Mature Spread (meters)
0.3 – 0.5
Growth Rate
Medium
Foliage Colour
Green
Habit
Spreading
Deer Resistant
Ontario Native
Growing & Maintenance Tips
Oak fern grows best in a moist to average, well-drained soil, in partial or full shade. They need consistent moisture and do not like to dry out.

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