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Cyathea Medullaris is also known as the black tree fern.




Images of Cyathea Medullaris or Black tree fern at google.com

Cyathea Medullaris is also known as the black tree fern.

Overview of Cyathea Medullaris

• It is a large tree fern.
• It can grow up to a height of 20 m.
• It is distributed across the south-west Pacific from Fiji to Pitcairn and New Zealand.
• It is called by the names mamaku, katata, korau, or p?tau in the Maori language.
• C. medullaris is common in lowland forest throughout the North Island.
• This fern has black trunk with characteristic hexagonal stripe bases.
• The fronds are about 5 m long.
• They arch upwards from the crown.
• Dead fronds are shed.
• The primary pinnae are from 40 cm to 1 m long.
• The undersides bear scales with marginal spines.
• The stripes is thick and black.
• They are very rough to the touch.
• C. medullaris will grow from fresh spores.
• Plants are easy to transplant when young.
• Tree fern trunks have been used as rough building material.
• It is also used for makeshift track work.

Scientific classification for Cyathea Medullaris

• Kingdom : Plantae
• Division : Pteridophyta
• Class : Pteridopsida
• Order : Cyatheales
• Family : Cyatheaceae
• Genus : Cyathea
• Subgenus : Sphaeropteris
• Section : Sphaeropteris
• Species : C. medullaris

Growing/Caring conditions for Cyathea Medullaris

• Locate a shady location.
• The site should receive periodic direct sunlight.
• Tree ferns will not thrive in complete shade.
• It should be planted in areas.
• The location should receive some direct sunlight.
• The locations should also have plenty of space to develop.
• Mature ferns may have a spread of 15 feet or more.
• Till compost into the soil of the planting site.
• This will help to improve drainage.
• It will also provide nutrients for developing tree ferns.
• Compost should be thoroughly mixed into the soil to a depth of at least 2 feet.
• Tilling the soil helps young tree fern roots to develop and expand underground.
• Sow tree fern spores into the soil.
• Cover with a thin layer of soil.
• If planting a small tree fern from a nursery, loosen the roots of young tree ferns before planting.
• If the roots are tangled and stunted, carefully cut with scissors.
• This will spur new root development.
• Place the plant gently into the soil.
• Ensure that the roots are evenly spread.
• Place mulch around the tree fern.
• Help maintain soil moisture.
• Fertilize tree ferns lightly.
• It should be fertilized throughout the growing season with a wettable fertilizer.
• Water tree ferns regularly.
• Cover tree fern fronds with newspapers.
• This is to protect tree ferns from frost damage as needed.
• Prune brown fronds as needed.
• Monitor closely for diseases.
• Tree ferns are most commonly infested by mites, mealy bugs and termites.





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