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Cordyline indivisa ‘Mountain Cabbage Tree’

Mountain Cabbage Tree

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Cordyline indivisa ‘Mountain Cabbage Tree’

Mountain Cabbage Tree
€1.98

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Packet Size:20 Seeds
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While the familiar Cordyline australis is commonly grown in areas all over the world, Cordyline indivisa is a rare and beautiful high altitude species from New Zealand.
This attractive and distinctive species is rarely cultivated, but is occasionally offered by specialist nurseries. It can be distinguished from all other Cordyline species by its very broad blue-grey leaves, and its smaller, tightly compacted inflorescence (cluster of flowers arranged on a stem) which is produced from beneath the foliage.

Known as Toi in the Maori vernacular, The Blue or Broad-leaved Cabbage tree, is the most magnificent of the species. The foliage, which droops with age, is blue-green and shaped like a broad sword, with a broad and conspicuous midrib which is often tinged red, orange red or golden. They are dusted a pale blue-white on the undersides.
C. indivisa prefers a moist, cool, even climate. Hardy to -10°C (14), it will tolerate a little more cold than C. australis but is a little more discerning when it comes to its planting position. It required not only the infamous moist but well drained soil, in addition a sheltered spot in part shade or filtered light is essential. Once established it is less demanding. It forms a stout tree with a trunk from 40 to 80cm (16 to 32in) in diameter. The stem, unlike its relatives does not branch.

Cordylines indivisa combine well with other exotica, such as bananas and palms, but they look equally at home in more conventional and hardy ornamental borders, often used when small to give structure to annual bedding schemes. They look good adjacent to other large foliage plants or some of the softer, gentle grasses which offset the hard lines of the leaves. When choosing flowering neighbours for a cordyline opt for fiery colours - reds, yellows and oranges for a dramatic display.



Sowing: Sow indoors at any time of year
Sow the seed in small pots or in seed trays in a seed and potting compost mixture and cover with 2mm (¼in) of compost. Keep in a warm temperature around 18 to 22°C (65 to 70°F). Germination 8 to 12 weeks (some may take a little longer). Be careful not to over water they can be susceptible to the fungal disease damping off.
When the seeds have germinated they can be pricked out into single three inch pots. Keep them in a very light room (greenhouse if possible). They need warmth to grow well, otherwise the roots struggle to take up nutrients and the seedlings turn yellow and die. Water sparingly until the seedlings are of a good size. You may wish to keep them in pots while young, as although they are hardy plants, for their first winter they are best moved into a greenhouse or conservatory for some protection while they are still young.
If planted early in the next summer, they will have made substantial new roots by wintertime and should be better able to cope with the rigours of our climate.


Planting out:
They prefer good light, but in very hot areas give them some protection from direct sun, under the canopy of palms or trees is perfect. Cordyline are slow growing, but if left to mature in time can grow tall, usually to 3m (10ft) in UK, but can grow up to 6m (20ft) high and 2m (6ft) wide in warmer locations. Plant 4m (12ft) away from any structure.
Before planting try and mix into your soil some well rotted manure and if this is not possible incorporate a general base fertiliser such as Fish Blood and Bone Meal. Addition of extra sulphate of potash enhances their colour. It is important that they are planted in a well drained soil - they do not like water logged conditions.
The plant can be cut back to reduce height or to force multiple trunks. It looks most natural if planted in groups. Three or more plants can be planted together in the same hole to produce this effect. Cordylines are very drought tolerant and can withstand the rigors of a fairly harsh environment. They work well in containers and are useful in dry gardens. They can tolerate coastal conditions if protected from direct sea winds.


Container Planting:
The great thing about a tree in a pot is that you can move it around to change the mood in the garden, but a problem with containers is that they tend to dry out quickly. Use loam-based compost such as John Innes No 2 or 3 which are quite free draining, but do tend to hold water much better than many of the peat-based multipurpose composts. Add an extra ten per cent of sharp grit sand. You can also add water retaining granules. Add 12 month release granules and place gravel stones in the bottom of the pot to assist drainage. Cover them with fleece when very frosty weather threatens.
Two cordyline species make good houseplants - C. australis and C. fruticosa. In the wild they would both become trees, but do not attain these dimensions in the home.


Cultivation:
For optimum growth water freely and feed monthly while in active growth. (or fertilise annually with a long term slow release fertiliser) Once established they will tolerate dry spells better than most plants. Established plants will tolerate a reasonable amount of frost, but the real killers are usually cold wet roots, or a cold damp head. In very cold regions it is worth tying the leaves up to the stem so that the crown is protected from the worst of the winter weather. Make sure that the foliage is thoroughly dry before you wrap it up for the winter. Use a forgiving material, such as fleece or raffia to tie plants so the leaves aren't bruised or cut.
You will find that the lower leaves will start to yellow and go brown; this is a natural senescing of the leaves and usually happens around October. They can be left on the plant or cut off close to the main stem with a sharp pair of secateurs or garden shears. Do not tear the leaves off as this can damage the main stem.


Maori culture:
“E kore e riro, he ti tamore no rarotonga” - meaning “The cabbage tree is never carried away in a gale”. Referring to a person of courage being like a cordyline which can withstand a gale. In its native New Zealand it is one of the world’s tallest monocotyledon growing as high as 20 metres and reaching an age of several hundred years.
‘Ti kouka’ as the Maori call it, were prized as navigational markers. The very strong fibres in the leaves were used for fishing and are still used in craftwork for baskets etc.
For at least the first 800 years of Maori occupation of New Zealand they were a valuable food source. The new shoots of the tree were an important source of protein and eaten as a vegetable. Their high carbohydrate content can be made digestible by cooking. Inner pithy fibres of the trunk can be dried and cooked into porridge, the stems are sweet. Their high carbohydrate content can be made digestible by cooking. Beer or wine is made from decoctions of the roots.
The Maori made use of its medicinal properties - healing sores and cuts and as a cure for dysentery and stomach pains. New Zealand is testing the tree for use as a crop for fructose production trialing the Maori tradition of coppicing C. australis as a perennial stem crop.


Nomenclature:
The name Cordyline comes from the Greek word for a club ‘kordyle’, referring to the enlarged rhizomes. Often referred to as a palm, they are actually members of the Agave family, Agavaceae


Botanical Synonymy:
Dracaena australis, Charlwoodia australis, Dracaenopsis australis, Terminalis australis, Cordyline superbiens, Dracaenopsis calocoma, Cordyline lentiginosa, Cordyline veitchii, Cordyline forsteri, Cordyline calocoma, Cordyline sturmii, Cordyline calocoma


The genus Cordyline is much confused with the closely related species Dracaena. The foliage of Cordyline can to the untrained eye look like the foliage of some Dracaena species, hence the confusion. One quick way to tell if you have a Cordyline or a Dracaena is to look at the roots.... Cordylines have white roots and Dracaenas have orange roots. Dracaena are not hardy in the UK


The leaves of a cordyline grow in a rosette circling the central stem. This distinguishes it from the similar looking Phormium (New Zealand Flax) which produces its leaves in a fan shaped arrangement.


Additional Information

Additional Information

Packet Size 20 Seeds
Family Agavaceae
Genus Cordyline
Species indivisa
Synonym Dracaena australis, Charlwoodia australis, Dracaenopsis australis, Terminalis australis, Cordyline superbiens, Dracaenopsis calocoma, Cordyline lentiginosa, Cordyline veitchii, Cordyline forsteri, Cordyline calocoma, Cordyline sturmii, Cordyline calocoma
Common Name Mountain Cabbage Tree
Other Common Names Blue or Broad-leaved Cabbage Tree, Giant Torbay Palm, Toi
Hardiness Tree
Hardy Hardy to -10°C (14°F)
Flowers Small scented white flowers
Natural Flower Time In Summer
Fruit Small blue/black berries
Foliage Blue-green and shaped like a broad sword.
Height 8m (26ft)
Spread 2 to 4m (6 to 12ft)
Spacing Plant 4m (12ft) away from any structure
Position Full sun to partial shade
Soil Any but prefers deep humus rich free draining.
Time to Sow Sow indoors at any time of year
Germination 8 to 12 weeks at 18 to 22°C (65 to 70°F)
Notes Often used as a shrub. Medium to fast Growing.

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