Bold and beautiful, Kimberly queen fern (also called sword fern because the fronds are straight and narrow) is easy to grow. The dark green fronds are perfect for adding tropical texture to shaded decks, patios, and other outdoor living areas. It's particularly striking in large containers as a specimen plant. Low-maintenance Kimberly Queen fern grows well both in containers and planted in the ground. It grows 3 feet tall and the mature fronds develop attractive spots (spores) on the undersides of each leaf.