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Onoclea sensibilis 'Supersize'
@ Juniper Level Botanic Gdn, NC

Onoclea sensibilis 'Supersize'

Supersize Sensitive Fern

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Item #: 9212

Zones: 3a to 9b

Dormancy: Winter

Height: 36" tall

Culture: Part Sun to Light Shade

Origin: United States

Pot Size: 3.5" pot (24 fl. oz/0.7 L) ?


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In 2007, I was tromping through a bog in Horry County, SC, and spotted a patch of the deciduous sensitive fern that seemed much larger than the typical size plants that grew nearby. Upon planting a rhizome in our home garden, it didn't let me down, producing leaves much larger than normal. The giant 3' tall fronds (2' tall is normal) are comparable in size to our other giant Onoclea, 'Texas Too Tall'. When the fronds of Onoclea sensibilis 'Supersize' emerge in spring, they also have a nice red central stipe, whose color later fades in the heat. Moist rich soils will produce the largest size plants. Remember that these spread by rhizomes, so don't plant them near other less aggressive plants.