Space plants according to the ultimate size of species you’ve chosen. Most hardy ferns prefer a shady or partly shaded location, with soil that is light yet highly organic. Take care not to plant crowns too deep – set them at or just below soil level.
Mulch at planting time, and make sure plants have ample water during the spring and early summer, particularly during the first few years, when plants are establishing themselves.
We recommend that no fertilizer be used on hardy ferns; mulching will provide enough organic matter. It’s best not to disturb the duff (the layer of decaying vegetation that covers the soil around the plant). Overhead spraying from time to time is beneficial.
Divide as necessary by separating the rhizomes – this should be done before new growth begins in the spring or, preferably, as plants go dormant in the fall.