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Wild Ginger Woodlands Shop Interrupted Fern (Osmunda claytonia)
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Interrupted fern is a large fern and its fertile fronds have leaflets that are capsules of spores. Image 1 of 4
Interrupted fern is a large fern and its fertile fronds have leaflets that are capsules of spores.
A young interrupted fern is in a pot ready for a sale. Image 2 of 4
A young interrupted fern is in a pot ready for a sale.
Interrupted fern is a large fern and its fertile fronds have leaflets that are capsules of spores. This fern also has infertile fronds. Image 3 of 4
Interrupted fern is a large fern and its fertile fronds have leaflets that are capsules of spores. This fern also has infertile fronds.
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Interrupted Fern (Osmunda claytonia)

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Interrupted Fern is a large fern, 2-4 feet high, that looks similar to both Ostrich Fern and Cinnamon Fern. It has separate fertile fronds and infertile fronds that are long and tapering. The leaflets are also long and tapering. They have rounded lobes and if you look closely, there are forked veins.

Fertile fronds tend to stand up straight. About half way along the rachis (stem) of the fertile fronds, a few to several pairs of leaflets are covered in sporangia (the capsule that holds the spores). They start out green and turn dark and then they release the spores. Once this is accomplished, these leaflets wither away and fall off leaving a gap. This is where the name “interrupted” comes from. The whole plant dies back in the fall.

Interrupted Fern is found in wet forests and swamp edges throughout the state of Michigan, though it is not as common as Ostrich Fern. It likes dappled sunlight or shade, and sandy, somewhat acidic soil. Illinois Wildflowers mentions that it likes humidity and needs protection from strong winds.

Interrupted Fern (Osmunda claytonia)

Michigan Flora reference page for state distribution: Interrupted Fern

height: 2-4 feet

soil: medium-wet

sun: dappled shade, shade

plant spacing: 3’

life cycle: perennial

family: Osmundaceae

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Interrupted Fern is a large fern, 2-4 feet high, that looks similar to both Ostrich Fern and Cinnamon Fern. It has separate fertile fronds and infertile fronds that are long and tapering. The leaflets are also long and tapering. They have rounded lobes and if you look closely, there are forked veins.

Fertile fronds tend to stand up straight. About half way along the rachis (stem) of the fertile fronds, a few to several pairs of leaflets are covered in sporangia (the capsule that holds the spores). They start out green and turn dark and then they release the spores. Once this is accomplished, these leaflets wither away and fall off leaving a gap. This is where the name “interrupted” comes from. The whole plant dies back in the fall.

Interrupted Fern is found in wet forests and swamp edges throughout the state of Michigan, though it is not as common as Ostrich Fern. It likes dappled sunlight or shade, and sandy, somewhat acidic soil. Illinois Wildflowers mentions that it likes humidity and needs protection from strong winds.

Interrupted Fern (Osmunda claytonia)

Michigan Flora reference page for state distribution: Interrupted Fern

height: 2-4 feet

soil: medium-wet

sun: dappled shade, shade

plant spacing: 3’

life cycle: perennial

family: Osmundaceae

Interrupted Fern is a large fern, 2-4 feet high, that looks similar to both Ostrich Fern and Cinnamon Fern. It has separate fertile fronds and infertile fronds that are long and tapering. The leaflets are also long and tapering. They have rounded lobes and if you look closely, there are forked veins.

Fertile fronds tend to stand up straight. About half way along the rachis (stem) of the fertile fronds, a few to several pairs of leaflets are covered in sporangia (the capsule that holds the spores). They start out green and turn dark and then they release the spores. Once this is accomplished, these leaflets wither away and fall off leaving a gap. This is where the name “interrupted” comes from. The whole plant dies back in the fall.

Interrupted Fern is found in wet forests and swamp edges throughout the state of Michigan, though it is not as common as Ostrich Fern. It likes dappled sunlight or shade, and sandy, somewhat acidic soil. Illinois Wildflowers mentions that it likes humidity and needs protection from strong winds.

Interrupted Fern (Osmunda claytonia)

Michigan Flora reference page for state distribution: Interrupted Fern

height: 2-4 feet

soil: medium-wet

sun: dappled shade, shade

plant spacing: 3’

life cycle: perennial

family: Osmundaceae

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Interrupted fern is a large fern and its fertile fronds have leaflets that are capsules of spores.
A young interrupted fern is in a pot ready for a sale.
Interrupted fern is a large fern and its fertile fronds have leaflets that are capsules of spores. This fern also has infertile fronds.
more images soon.jpg