• Photo of Adiantum raddianum (Adiantum raddianums)

Plant Profile: Adiantum raddianum

Taxonomy: Adiantum raddianum

Names

Delta Maidenhair, Maidenhair Fern, Pacific Maidenhair

  • Photo of Adiantum raddianum (Adiantum raddianums)

Phonetic Spelling:ae-dee-AN-tum rad-dee-AE-num

Genus:Adiantum

Species:raddianum

Family:Pteridaceae

This perennial fern, which forms clumps and sheds its leaves seasonally, is indigenous to the Tropical Americas and the West Indies. Its genus name is derived from the Greek term "adiantos," meaning "unwetted," a nod to its water-repellent leaves. The specific name honors the Italian botanist Giuseppe Raddi.

This fern thrives in partial to full shade but may lose its vigor if exposed to excessive darkness. It requires consistently moist to wet soil and should not be allowed to dry out. The plant propagates through rhizomes and benefits from high humidity; when cultivated indoors, it flourishes in bathrooms.

The rhizome is short and spreads widely.

Adiantum raddianum Feature Summary

Adiantum raddianum Image Gallery

Tags

#deciduous
#houseplant
#lacy leaves
#interiorscape
#fern
#high maintenance
#deer resistant
#delicate
#humidity tolerant
#tropical feel
#container plants

Similar Plants

Adiantum raddianum is often confused with:

Adiantum raddianum Feature Summary

Attributes
Tropical Americas and West Indies
Tropical Americas and West Indies
Perennial
Fruit
No fruit; reproduces via spores
Flowers
Leaves
Delicate, lace-likec lustered fronds, clump forming. 1-5-pinnate, arching, weakly glaucous beneath, membraneous; pinnae often decompound, flabellately branched; pinnules/leaflets somewhat triangular, broadly cuneate, lobed, sterile lobes cut deeply; stipe/petiole wiry, shiny black or tinged purple. SORI round to elongated, covered my revolute pinnule marginal flap.
Compound (Pinnately , Bipinnately, Palmately)
Fronds
Other/more complex
Whole Plant Traits
Houseplant
Fern
Arching
Clumping
Creeping
Cultural Conditions
Partial Shade (Direct sunlight only part of the day, 2-6 hours)
Dappled Sunlight (Shade through upper canopy all day)
Good Drainage
Occasionally Wet
Landscape

Adiantum raddianum Attributes

Adiantum raddianum: Country Or Region Of Origin

Tropical Americas and West Indies

Adiantum raddianum: Distribution

Tropical Americas and West Indies

Adiantum raddianum: Particularly Resistant To (Insects/Diseases/Other Problems)

This plant is seldom damaged by deer.

Adiantum raddianum: Life Cycle

Annual
Biennial
Bulb
Perennial
Woody

Adiantum raddianum: Recommended Propagation Strategy

Division
Grafting
Layering
Leaf Cutting
Root Cutting
Seed
Stem Cutting

Adiantum raddianum Fruit

Adiantum raddianum: Fruit Description

No fruit; reproduces via spores

Adiantum raddianum Flowers

Adiantum raddianum: Flower Description

No flowers.

Adiantum raddianum Leaves

Adiantum raddianum: Leaf Description

Delicate, lace-likec lustered fronds, clump forming. 1-5-pinnate, arching, weakly glaucous beneath, membraneous; pinnae often decompound, flabellately branched; pinnules/leaflets somewhat triangular, broadly cuneate, lobed, sterile lobes cut deeply; stipe/petiole wiry, shiny black or tinged purple. SORI round to elongated, covered my revolute pinnule marginal flap.

Adiantum raddianum: Woody Plant Leaf Characteristics

Broadleaf Evergreen
Deciduous
Needled Evergreen
Semi-evergreen

Adiantum raddianum: Leaf Color

spa
Green

Adiantum raddianum: Leaf Type

Compound (Pinnately , Bipinnately, Palmately)
Fronds
Needles
Sheath
Simple

Adiantum raddianum: Leaf Arrangement

Alternate
Opposite
Other/more complex
Rosulate
Whorled

Adiantum raddianum: Leaf Shape

Acicular
Auriculate
Cordate
Cuneate
Deltoid
Elliptical
Filiform
Lanceolate
Linear
Oblanceolate
Oblong
Obovate
Obtuse
Orbicular
Ovate
Palmasect
Palmatifid
Peltate
Pinnatifid
Pinnatisect
Reniform
Rhomboidal
Spatulate
Subcordate
Subulate

Adiantum raddianum: Leaf Margin

Crenate
Crenulate
Dentate
Denticulate
Doubly Crenate
Doubly Dentate
Doubly Serrate
Entire
Lobed
Serrate
Sinuate
Undulate

Adiantum raddianum: Hairs Present

No
Yes

Adiantum raddianum Whole Plant Traits

Adiantum raddianum: Plant Type

Annual
Bulb
Carnivorous
Edible
Epiphyte
Fern
Ground Cover
Herb
Herbaceous Perennial
Houseplant
Mushroom
Native Plant
Ornamental Grasses and Sedges
Perennial
Poisonous
Rose
Shrub
Succulent
Tree
Turfgrass
Vegetable
Vine
Water Plant
Weed
Wildflower

Adiantum raddianum: Woody Plant Leaf Characteristics

Broadleaf Evergreen
Deciduous
Needled Evergreen
Semi-evergreen

Adiantum raddianum: Habit/Form

Arching
Ascending
Broad
Cascading
Climbing
Clumping
Columnar
Conical
Creeping
Dense
Erect
Horizontal
Irregular
Mounding
Multi-stemmed
Multi-trunked
Open
Oval
Prostrate
Pyramidal
Rounded
Spreading
Vase
Weeping

Adiantum raddianum: Growth Rate

Slow
Medium
Rapid

Adiantum raddianum: Maintenance

Low
Medium
High

Adiantum raddianum: Texture

Fine
Medium
Coarse

Adiantum raddianum Cultural Conditions

Adiantum raddianum: Light

Dappled Sunlight (Shade through upper canopy all day)
Deep shade (Less than 2 hours to no direct sunlight)
Full sun (6 or more hours of direct sunlight a day)
Partial Shade (Direct sunlight only part of the day, 2-6 hours)

Adiantum raddianum: Soil Drainage

Frequent Standing Water
Good Drainage
Moist
Occasional Flooding
Occasionally Dry
Occasionally Wet
Very Dry

Adiantum raddianum: Available Space To Plant

12 inches-3 feet
12-24 feet
24-60 feet
3 feet-6 feet
6-feet-12 feet
Less than 12 inches
more than 60 feet

Adiantum raddianum: USDA Plant Hardiness Zone

thermostat
10a
thermostat
10b
thermostat
9b

Adiantum raddianum Stem

Adiantum raddianum: Stem Color

grass
Black

Adiantum raddianum: Stem Is Aromatic

No
Yes

Adiantum raddianum Landscape

Adiantum raddianum: Resistance To Challenges

Black Walnut
Compaction
Deer
Diseases
Drought
Dry Soil
Erosion
Fire
Foot Traffic
Heat
Heavy Shade
Humidity
Insect Pests
Pollution
Poor Soil
Rabbits
Salt
Slugs
Squirrels
Storm damage
Urban Conditions
Voles
Wet Soil
Wind

Adiantum raddianum: Landscape Location

Coastal
Container
Hanging Baskets
Houseplants
Lawn
Meadow
Naturalized Area
Near Septic
Patio
Pond
Pool/Hardscape
Recreational Play Area
Riparian
Rock Wall
Slope/Bank
Small Space
Vertical Spaces
Walkways
Woodland