The Sensitive Fern, Onoclea sensibilis, is a large, somewhat coarse deciduous fern which occurs in wet woods and thickets and in moist soils along streams and springs. Sensitive Ferns can grow up to 4' tall. It features long-stalked, deeply pinnatifid, bright green, vegetative (sterile) fronds (2-4' long) with leathery, triangular leaflets (pinnae) which have distinctively netted veins. It is best not to remove dead fronds until spring, because they provide protection for the crowns over the winter.
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