you also may want to look into the factor that ferns cannot grow in places that get full sun. That being said, thats probably not the best place in the area to plant. I'd look around for an area with a little bit more light penetrating through the canopy of the woods.
just my opinion though.

and the answer to your question is no the ferns will not fuck with our plants if you leave them there. Ferns are very sensitive plants and a small change in their ecosystem can kill them. in fact theyll probably die b4 u finish this grow because of you walking on them occasionally


oh and 4cyl5spd....may i ask WTF is fiddlehead soup?