Osmunda cinnamomea, commonly called Cinnamon Fern, is a perennial nicknamed for the cinnamon-shaded fertile fronds that emerge from her center in spring.

First, though, edible fiddleheads surface from the center of a symmetric clump and stretch out into large, erect, pinnate-compounded, lemony-green sterile fronds stretching 2-4 feet long. In autumn, these fade to yellow then turn a topaz-brown before dying back in winter. Then, the fertile fronds emerge from the fern's center standing above the vase-like cluster of sterile fronds. At first green, they soon turn the spicy cinnamon shade for which she is famous, resulting in wonderful explosions of color.

Fertile fronds are covered with abundant masses of brownish sporangia that die back after shedding their spores in late summer. All of this ultimately results in wonderful texture and visual interest amidst any garden.

Cinnamon ferns yield delightful beauty as borders, or because they actually require moist soil, as edgings for ponds and streams. Grown in mass, their rusty-hued fronds create a feeling of flames in springtime, and as an accent, a clump of Cinnamon fern adds a lush, tropical feeling, particularly in shaded areas.

Winter dormant, these ferns have a slow to moderate growth rate, are some of the few groundcovers that will grow under walnut trees and deter deer, attributes for which they are prized. Ultimately, the Cinnamon Fern is an extra hardy, highly versatile, moisture loving perennial that offers constant growth interest as well as shimmering shades of shifting colors.

Things to Note
This plant is available for 20% off when purchased with Japanese Painted Ferns (Athyrium niponicum 'Pictum').

Interesting Facts


The latent buds of the Cinnamon Fern rival chestnuts in size and flavor!

Fronds can be killed by fire, but they re-sprout from rhizomes. Because of this, Cinnamon Ferns have good fire tolerance, often showing vigorous rhizome growth after the fact.

Gardener Tips
If you have a water feature, you will want to strongly consider this fern as one of its most stunning applications is planted by a pond where its reflection, in vivid green, is breathtaking.

Specifications

• Cold hardiness zone: 2-10 (-50 degrees F) - Contact your local extension to confirm hardiness if you are in a fringe zone (we cannot guarantee hardiness in fringe zones)
• AHS Heat Zone: 10-1
• Light: Part sun   Shade
• Growth rate: Moderate to slow
• Mature height: 30-60"
• Spread: 24-36"
• Spacing: 24-30"
• Tolerant of: Deer, Drought, Rabbits
• pH of Soil: 4.5 - 7.0, Ideal pH: 5.5 - 6.5
• Grows Under Trees: Conifer - Yes, Walnut - Yes, Other - Yes
• Good for borders & edging: Yes
• Edible: Yes
• Native to the U.S.: Yes

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