Fragrant Maidenhair Fern - Adiantum raddianum 'Fragrantissima' - 4” Pot

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Fragrant Maidenhair Fern - Adiantum raddianum 'Fragrantissima' - 4” Pot

With its graceful open architecture, Fragrant Maidenhair Fern (Adiantum raddianum ‘Fragrantissimum’) is one of the most popular indoor ferns.

With a hint of refreshing fragrance, this tropical Maidenhair is definitely a market hit. While its largest market in the USA is west of the Rockies, this durable house plant is gaining popularity in the East.

Its delicate fronds love good indirect light and uniform humidity, but no misting of foliage. Try to protect it from drafts, and especially from forced-air heat.


Adiantum
Adiantum /ˌædiˈæntəm/, the walking fern or maidenhair fern, is a genus of about 200 species of ferns in the Vittarioideae subfamily of the family Pteridaceae, though some researchers place it in its own family, Adiantaceae. The genus name comes from Greek, meaning "not wetting", referring to the fronds' ability to shed water without becoming wet.

Description
They are distinctive in appearance, with dark, often black stipes and rachises, and bright green, often delicately cut leaf tissue. The sori are borne submarginally, and are covered by reflexed flaps of leaf tissue which resemble indusia. Dimorphism between sterile and fertile fronds is generally subtle.

They generally prefer humus-rich, moist, well-drained sites, ranging from bottomland soils to vertical rock walls. Many species are especially known for growing on rock walls around waterfalls and water seepage areas.

The highest species diversity is in the Andes. Fairly high diversity also occurs in eastern Asia, with nearly 40 species in China.

Species native to North America include A. pedatum (five-fingered fern) and the closely related A. aleuticum, which are distinctive in having a bifurcating frond that radiates pinnae on one side only. A. capillus-veneris (Venus-hair fern) has a native distribution that extends into the eastern continent. A. jordanii (California Maidenhair) is native to the west coast.

There is a rich Adiantum flora in New Zealand with 3 endemic species (A. cunninghamii, A. viridescens and A. fulvum) in a total of 10 recorded species. Many of these are common especially in the west and south of the islands.

Cladistics
It is now known that this genus is paraphyletic, and that the vittarioid ferns are derived from this larger paraphyletic genus. However, if A. raddianum, and possibly a few other species, are removed, the remaining plants (genus type: Adiantum capillus-veneris) are then monophyletic.

Cultivation
Many species are grown in the horticultural trade, including all three of the species mentioned, as well as a number of tropical species, A. raddianum and A. peruvianum. Both A. pedatum and A. aleuticum are hardy to zone 3, and are by far the most cold-hardy members of the genus. A. venustum is also cold-hardy to zone 5. A. capillus-veneris is hardy to zone 7.