Cyathea brownii

Norfolk tree fern ( Cyathea brownii )

The Norfolk tree fern ( Cyathea brownii ) is considered the greatest of all the tree ferns in the world. He comes from Norfolk Island where it reaches heights of up to 30 m. The long and wide twice to three times pinnate fronds lengths can reach up to 5 m. The trunk is long and as the young fronds heavily covered by brown to orange- colored hair; it can be smooth with time and have oval scars of fallen fronds. Cyathea brownii is named after the botanist Robert Brown ( 1773-1858 ).

Cultivation

The Norfolk tree fern grows from spores zoom, as a young plant quite fast, up to 30 cm per year, forming approximately one frond per month. He needs to have a neutral to slightly acidic humus-rich soil; this must be moist, but be slightly translucent. Waterlogging tolerate the plant bad. Cyathea brownii also requires high humidity and moderate to plenty of water and loves a bright position out of the midday sun. Fertiliser is rarely required, it is rather the danger of over-fertilization, giving the plant may suffer severe damage. The Norfolk tree fern can light frost to -4 ° C was well tolerated, but should still be protected from frost stronger. In colder regions, this beautiful and unusual plant is usually kept in the greenhouse. It is easy to handle and is recovering by their rapid growth also usually quickly from damage. Its size can make quite impractical the tree fern however.

Natural Habitat

Cyathea brownii is in the subtropical rain forest of Norfolk Island at home. The daytime temperatures are about 23 ° C in the summer months and about 17 ° C in winter; the maximum temperatures are approximately at 29 ° C, and the lowest at 6 ° C. The relative humidity is consistently between 70 and 80 percent throughout the year; the annual precipitation 1200 mm.

Swell

  • John E. Braggins, Mark F. Large: Tree Ferns. Timber Press, 2004, ISBN 0881926302
  • Martin Rickard: The Plant Finder's Guide To Garden Ferns. Timber Press, 2003, ISBN 0881925675
  • Bureau of Meteorology, Australian Government
  • Tree Ferns
Leptosporangiate fern Cyatheaceae Genus Species Karel Domin Cyatheales Wedel Rainforest
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