Adiantum raddianum aka Delta Maidenhair Fern

Taxonomy

Adiantum raddianum, also known as the Delta maidenhair fern, is a popular indoor fern native to South America. Its shiny, dark leafstalks resemble human hair and its triangular fronds can reach up to 12 inches in length and 6 inches in width. This plant is typically found on forest floors, rock crevices, river banks, coastal cliffs, and basalt banks along trails and streams. The genus name Adiantum comes from the Greek word "adiantos", meaning "unwetted" in reference to the leaves. It is hardy down to 5 °C (41 °F) and requires high humidity, well-drained soil, bright indirect light, and a constant temperature. Maidenhair ferns originated in the Brazilian tropics and contain almost 200 different species, growing in temperate climates. Pacific Maidenhair Fern is a popular houseplant that needs regular watering and abundant sunlight, and should be less than 3 feet from a window. A. raddianum is suitable for USDA hardiness zones 10 and 11, but may be considered invasive in Hawaii and French Polynesia. The cultivars ‘Brilliantelse’ and ‘Kensington Gem’ have won the Royal Horticultural Society's Award of Garden Merit. With proper care, this fern can grow more beautiful with each passing year, and during the spring may produce fronds that contain fern spores for reproduction.

Common names

Delta Maidenhair Fern, Delta Maidenhair, Maidenhair Fern

How to care for Delta Maidenhair Fern

Difficulty

Delta Maidenhair Fern requires a bit more attention and knowledge to thrive, making it a suitable plant for those with some gardening experience.

Water

Delta Maidenhair Fern should be watered regularly, allowing the soil to dry out between waterings.

Soil

When growing Delta Maidenhair Fern, it is important to pay attention to the soil type you are using. This plant is very sensitive to dry soil and needs a potting soil that retains moisture. A good soil should still be well-draining and contain lots of organic matter. Coco coir or sphagnum moss are great options to provide the Delta Maidenhair with the nutrients and moisture it needs. The added organic matter will also help the soil retain water and prevent the Delta Maidenhair Fern from drying out too quickly. Before planting, make sure to mix compost or manure into the soil for extra nutrients. Also, make sure to water the Delta Maidenhair Fern regularly, making sure to keep the soil evenly moist but never soggy. With the correct soil and watering regimen, the Delta Maidenhair Fern will thrive and bring lots of beauty to your home.

Dormancy

During the cold period, it is common for Delta Maidenhair Fern to go dormant and their growth may slow down, so waterings should be spaced out more during this period.

Cat approves this plant

Toxicity

Delta Maidenhair Fern is not known to cause harm to humans or pets.

Fertilizer

The growth of Delta Maidenhair Fern is not rapid and it doesn't necessitate any extra fertilization. By replacing its potting soil once a year, it should receive ample nutrition. It is important to note that plants obtain their energy from the sun's rays, not from fertilizers.

Growth-pattern

The Delta Maidenhair Fern is clumping in nature, with new growth originating from the soil in close proximity to the original plant.

Region of origin

Delta Maidenhair Fern’s native range is Worldwide.


More info:
Wikipedia