Adiantum Monocolor Ferns are elegant, fast growing, evergreen foliage plants with delicate, lacy fronds that are held on wiry, 6″-12″ black stems. Maidenhair fronds are composed of bright green, triangular leaflets and can grow up to 12″ wide and 18″ long. The plants themselves will spread to about 24″. They are long lived plants when they receive sufficient humidity and are not exposed to drafts, gas fumes or cigarette smoke.