Maidenhair fern (Adiantum pedatum)

Their leaves (called “fronds”) appear delicate, but maidenhair ferns (Adiantum spp.) are reliable long-lived perennials. Northern maidenhair (A. pedatum) thrives in most gardens within USDA zones 3-8, while the Southern counterpart, (A. capillus-veneris), predominates in warmer USDA 7-10. Unfortunately, planting of maidenhairs are not utilized in the Southern Appalachian gardens (USDA zones 6-8).

Fronds average 18-24 inches in length and form 12-15 inch wide colonies. Northern maidenhair flourishes in zones with a humid, warm summer its soil rhizome network as the only clue of its presence. Spritely green fronds emerge in the spring. Utilize them in partially- to fully- shaded landscape areas. In a container, permit the dainty fronds to spill over the edge of the planter.

Choose a dense moist woodland spot and generously amend the well drained soil with compost. Maidenhair prospers around ponds and other water features. A neutral to slightly alkaline soil is perfect. Gradually add limestone to adjust soil pH higher as needed and maintain good air circulation around plants.

When planting most ferns, set the roots in the hole so the crown is at or slightly shallow with the soil surface. Avoid planting deep! Lightly cover with 1-2 inches of an organic mulch such as bark chips, pine needles or leaf mold.

Most ferns are light but constant feeders. Feed bi-monthly from March thru August with a water-soluble fertilizer such as Miracle Gro®, Schultz™ or Hollytone® for optimum growth.