An ideal choice for shadier rooms, north or east facing windowsills or bathrooms, this tough fern is an undemanding houseplant. Asplenium nidus bears bright green, sword-like fronds with prominent black midribs. Fresh young fronds are continually produced from the basal rosette, replacing older leaves. Its clean outlines are elegantly simple, and it also has the benefit of being a good air purifier. Maximum height: 1.5m (60in). Spread: 1m (40in).