Fern, Ostrich FernOstrich Fern is a clump forming upright deciduous fern with large showy light green fronds that resemble ostrich plums. Best in part sun and moist well drained soil. The Ostrich Fern fiddleheads are edible. *Deciduous ferns may still be dormant until late spring. This will appear that we've delivered a pot full of dirt however a healthy robust fern is awaiting inside. Type: Fern Height: 3' 6 Spread: 5' 8' Spacing: 5 USDA Hardiness Zone: 3 7 Culture: