with giant fronds reaching 40 feet tall grow alongside gnarly 'ohi'a lehua trees.
This demonstrates the large interspecific variation in tree fern
growth as already cited by Arens (2001); Schmitt and Windisch (2007).
Gametophyte and sporophyte of tree ferns
in vitro culture.
WARMER summers are prompting many gardeners to include a touch of the exotic in their planting - and there's nowhere better to start than palms and tree ferns
Above these altitudes, in the highlands of New Guinea, cloud forest occurs from here up to the tree line and is dominated by Amaracarpus caeruleus and Pittosporum pullifolium, with many specimens of the tree fern
Cyathea percrassa in the lower levels together with members of Ericaceae (Rhododendron gaultheriifolium, Dimorphanthera microphylla) and Epacridaceae (Trochocarpa dispersa, Rapanea vaccinioides).
Create the structure of a sub-tropical-style garden with tree ferns
, palms and gunnera, then plant your flowers and ferns in front.
Extraction of adult plants and deforestation are threatening the existence not only of the tree fern
species but also of microhabitats for epiphytic fern species, some of them exclusively (or mostly so) found on this kind of substrate.
Q Does my Dicksonia tree fern
need any protection during winter?
Hardy in zones 14-17 (unless noted): Australian tree fern
(except zone 14), blue hibiscus, datura (except zones 14-15), lady palm.
Due to their epiphytic (non-parasitic) habit, they require an organic, loose, well-drained potting medium such as sphagnum moss alone or mixed with other materials like tree fern
fiber and leaf mold.
For the more ambitious there is the splendid Australian Tree fern
which requires regular watering and winter protection to establish over here, the most popular growing at no more than an inch a year.
Behind is a tree fern
(Dicksonia X Lathamii) which was here at the same time as Ernest Wilson (inset).
Similarly, should you grow somewhat tender ferns such as the tree fern
, an onion bag of leaves placed in the crown will protect the new growth from frost - but don't forget to take it out after the last frosts next year.
Speaking of ferns, the CSUN botanic garden has an amazing Australian tree fern
variety called ``Brentwood'' that is faster-growing, more robust and larger than the type typically planted in our gardens.
A THE Australian tree fern
is hardy down to about -15C but will lose its fronds in winter.