Fern Fiddleheads in the Spring

Like: 
1
Edible: 
yes
Dynamic Accumulator: 
no
Perennial: 
no

please be aware, fern or its young form fiddlehead as in this video is known to be carcinogenic and don't ever eat it raw, and thorough cooking is necessary, because the toxin can be destroyed in certain degree under boiling conditions, and don't eat it too often either.

Botanical name: 
Matteuccia struthiopteris