| Description | An easy to grow large upright fern. Interrupted fern gets its name from the brown fertile pinnae, which "interrupt" the green sterile leaflets on the larger fronds. |
|---|---|
| Pronunciation | (os-MUN-duh) |
| Plant Type | All Plants, Ferns - Hardy |
| Hardiness Zone | 2-8 |
| Sunlight | part sun |
| Moisture | moist |
| Soil & Site | Naturally occurs in moist woods. Prefers acidic moist soils but tolerant of most soils. |
| Temperature | Leaves wither early after a frost. |
| Flowers | Ferns do not produce flowers. They were around prior to the evolution of the flowering plants (angiosperms). This fern produces its spores in the center of a fertile frond. These fertile pinnae interrupt the frond. |
| Leaves | The frond is pinnate-pinnatifid. The fertile frond is interrupted in the middle with the fertile pinnae. On top of this section and below are vegetative pinnae. |
| Stems | Rhizome is compact and horizontal forming a stubby mass of black old stems at the base of the plant. |
| Dimensions | Reaches 2-4 feet. |
| Propagation | spores |
| Author's Notes | Given the proper site I have found this an easy fern to grow. |
| Notes & Reference | #80-A Field Guide to Ferns (Boughton Cobb), #90-Ferns for American Gardens (John T Mickel) |
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