The following are some Athyrium ferns recommended for used in Delaware Landscapes. All require part shade to full shade conditionas and moist soils.
Athyrium filix-femina 'Lady In Red', Lady fern
This is a delicate, lacy fern with arching fronds and red stems at maturity. It is a native fern species and is 1-1.5' in height.
Photograph of the Lady fern (Athyrium filix-femina en ssp. angustum 'Lady in Red'). Photo taken at the Mt. Cuba Center where it was identified. Photo by and (c)2007 Derek Ramsey (Ram-Man). the GFDL v.1.2 license applies http://www.gnu.org/copyleft/fdl.html.
Athyrium 'Ghost', Ghost fern
This fern is a bit taller at 2-2.5' in height. It is silvery-grey with stiffly upright fronds and is a slow spreading groundcover.
Athyrium niponicum 'Regal Red', Japanese painted fern
This Athyrium fern has silvery grey-green fronds and vase-shaped arching foliage. It is very elegant looking. It is 1-1.5' in height.
Athyrium niponicum 'Pictum', Japanese painted fern
This is a slightly larger Japanese painted fern 18-20" in height. It has silvery grey-green fronds with burgundy tones and was a perennial plant of year.
Athyrium 'Ocean's Fury', Crested painted fern
This 3' fern has upright fronds dusted in silver. It forms 2' wide clumps and is useful as a groundcover.