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Gardeners World episode 6 2002

Gardeners World episode 6 2002

Gardeners World episode 6 2002: Alan Titchmarsh and Joe remove winter protection from the tree ferns and Chris visits a place with inhospitable terrain in Yorkshire.



 

 

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Gardeners World episode 6 2002

 

Tree fern

The tree ferns are the ferns that grow with a trunk elevating the fronds above ground level. Most tree ferns are members of the “core tree ferns”, belonging to the families Dicksoniaceae, Metaxyaceae, and Cibotiaceae in the order Cyatheales. This order is the third group of ferns known to have given rise to tree-like forms. The two others are the Marattiales, a eusporangiate order that the extinct Psaronius evolved from, and the order Polypodiales where the extinct genus Tempskya belongs.

In addition to those families, many ferns in other groups may be considered tree ferns, such as several ferns in the family Osmundaceae, which can achieve short trunks under a metre tall, and particularly ferns in the genus Cibotium, which can grow ten metres tall. Fern species with short trunks in the genera Blechnum, Calochleana, Cnemedaria, Culcita (mountains only tree fern), Cystodium, Leptopteris, Lophosoria, Sadleria, Thyrsopteris and Todea could also be considered tree ferns in a liberal interpretation of the term.

Crocosmia

Crocosmia is a small genus of flowering plants in the iris family, Iridaceae. It is native to the grasslands of southern and eastern Africa, ranging from South Africa to Sudan. One species is endemic to Madagascar.

They can be evergreen or deciduous perennials that grow from basal underground corms. The alternate leaves are cauline and ensiform (sword shaped). The blades are parallel-veined. The margin is entire. The corms form in vertical chains with the youngest at the top and oldest and largest buried most deeply in the soil. The roots of the lowermost corm in a chain are contractile roots and drag the corm deeper into the ground where conditions allow. The chains of corms are fragile and easily separated, a quality that has enabled some species to become invasive and difficult to control in the garden.

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Gardeners World episode 6 2002
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Gardeners World episode 6 2002: Alan Titchmarsh and Joe remove winter protection from the tree ferns and Chris visits a place with inhospitable terrain in Yorkshire.