Maidenhair Fern

Botanical Name: Adiantum raddianum

Maidenhair Fern is a foliage plant with arching, black, wiry fronds covered with green triangular leaflets, called pinnae.

One of the most commonly grown in a container, Adiantum raddianum is well-worth growing for its stunning foliage. It will live a long time, too, if you can meet its need for high humidity.

This beautiful fern grows from rhizomes, that spread quickly just under the surface of the soil. It can reach a width of 24 in (60 cm) or more. You'll enjoy many plants over time by propagating the plant. It's easy to divide.

Repot in spring when it has outgrown its pot, using a container that provides good drainage. This is a good time to divide the plant, if needed.

Not many pests bother this fern. However, scale insects and mealybugs are the most common. Check the fronds for infestations. They are much easier to remedy if caught early.

Somewhat difficult to grow, this tropical native demands high humidity which is not practical in most homes. Grows best in terrariums where humidity is kept at a high level. Drafts and dry air will cause leaflets to shrivel.

Origin: Brazil and Venezuela

Height: 6-15 inches (15-38 cm).

Light: Bright light. No direct sun.

Water: Keep soil evenly moist, but do not allow to stand in water.

Humidity: Requires moist air. Use a humidifier or plant in a terrarium.

Temperature: Average room temperatures 60-75°F, 16-24°C

Soil: Combine half potting mix with half peat moss. Don't use potting mix that contains fertilizer (it can dissolve too fast and burn delicate fern roots).

Fertilizer: Feed once a month spring through summer with liquid fertilizer diluted by half.

Propagation: Division. This plant grows from rhizomes that spread horizontally just beneath the surface of the soil. Divide clump in spring, leaving rhizome attached to 1-2 fronds, and pot in its own container.