Aloe pluridens French Aloe

Family    Xanthorrhoeaceae
Subfamily    Asphodeloideae

The specie name pluridens is derived from two words pluri = many and dens = teeth which refers to the many teeth on the leaf margins.

A group of Aloe pluridens growing against the boaundary fence at my natural aloe and grassland garden at Mount Moreland

Distribution and habitat of Aloe pluridens

It occurs naturally from the Eastern Cape to just north of Durban in KwaZulu  Natal where it is normally found growing on cliffs and in the shade of coastal bush. It is particularly common in the Port Elizabeth, Uitenhage and the Albany areas where the rosettes may be seen above the surrounding bush.

Description

Aloe pluridens is a very attractive aloe which is usually single-stemmed or may be branched it bears numerous small plantlets on the lower stems. Aloe pluridens is a tall aloe, occasionally reaching up to 5-6 m high. The leaves are bright yellowish to bright green. The leaf margin is armed with numerous teeth. The leaf sap is clear with a strong, rhubarb-like smell.

The inflorescence is attractive, branched with up to 4 racemes protruding above the leaves. The flowers are usually orange or pinkish-red, but a yellow form is also known. Up to three inflorescences may be borne from each rosette. The flowers that are produced from May to July attract sunbirds and bees which in my garden at Mount Moreland often attract Fork tailed Drongos which feed on the bees. This winter the beautiful Scarlet Chested Sunbird which normally occurs much further north has been attracted to the numerous aloes, Kniphofias and Erythrinas trees  that I have flowering in my garden.

Growing Aloe pluridens

Aloe pluridens is extremely easy to grow preferring partial shade for the hottest time of day.  Aloe pluridens will grow in poor soils with little attention but will do much better if it is planted in a large hole that has first been enriched with well-rotted compost and fertilised at least once a year at the beginning of the growing season with a balanced granular fertiliser. 

Irrigation

Although Aloe pluridens is drought tolerant, it thrives and flowers better if adequate irrigation is provided in the summer months.

Propagating Aloe pluridens

Aloe pluridens is extremely easy to propagate which is best done by simply removing the numerous plantlets on the stem and planting them.

The numerous suckers growing on the main stem of Aloe pluridens can clearly be seen

The removal of the side plantlets that are produced in large numbers stimulates the plant to produce more giving a continuous supply of propagating material which makes is possible to quickly produce ever larger numbers of this spectacular aloe. Aloe pluridens can also be grown from seed which they do not produce in large numbers. When vegetatively propagated always propagate from a number of mother plants so that your entire collection does not consist of the clones of one single plant to allow for cross pollination and the production of seed which will hopefully spread to and grow in your neighbours garden.

Landscape value

Aloe pluridens has a high landscape value both as a feature plant where it can be planted as a single plant or as an extensive mass plantings to create a focal point or to define a boundary. Massed plantings provided a brilliant splash of colour during the dry winter months. This aloe is a must for every coastal garden irrespective of whether it is planted entirely to local  indigenous plants or exotic foreign plants

Ecological value

Aloe pluridens is a good source of nectar for birds and bees during the dry winter months

Pests and diseases

Aloe Snout Weevils

Aloe Snout Weevils belonging to the family Curculionidae, the Lesser Aloe Weevil Rhadinomerus illicitus being a particularily destructive specie

The Aloe Snout Weevil is grey, dark brown to black in colour. They are between 15mm-25mm in length. The adult Aloe Snout Weevil feeds on the sap it obtains by puncturing the aloe leaves causing circular lesions 3mm in diameter which leave unsightly marks on the aloe leaves.  The Aloe Snout Weevil lays its eggs at the base of the aloe leaves, the larvae bore into the stem just below the crown of the plant which often causes the entire plant to die.

For comprehensive information on Snout weevil Damage Done to Aloes go to Kumbula Nursery Blog at

http://kumbulanursery.co.za/blog/snout-beetle-damage-done-to-aloes

White Scale insects

The white scale insects become visible as neat white rows on the leaves, especially on the lower surfaces. If untreated, the entire plant will eventually be covered by the insects and may die.

Medicinal uses of Aloe Pluridens

The sulphur-containing compound Pluridone found in the roots of Aloe pluridens has been proven in trials to effectively control coccidia in poultry.

Michael Hickman

Landscape Design and Rehabilitation Specialist

www.ecoman.co.za

michael@ecoman.co.za

06.06.15

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Justicia betonica, White shrimp plant, Squirrels’ tails

Justicia betonica is a very variable plant in the family Acanthaceae with a large distribution range

which extends from the east coast of South Africa along the coast of tropical east Africa and on through Arabia, India and East Asia. In many areas in particular where it is cultivated as a garden and landscape plant it is known as the white shrimp plant or squirrel's tail.

Justicia betonica in flower

The plants that I have growing are medium sized 1-1.5 m glossy brilliant green plants that

have blooms that are held in slim upright showy, terminal or axillary spikes which are comprised of papery, green bracts enclosing small white flowers. The flowers which are produced in late summer into the early autumn are followed by club-shaped seed capsules which open explosively when ripe to scatter the seeds.

  

Justicia betonica flower

Justicia betonica needs to be cut back hard in late winter after flowering and tip-pruned as it grows through spring and early summer, to promote a compact tidy shape, otherwise it can become leggy. Justicia betonica grows best in partial shade but will also grow well in full sun. This attractive, fast-growing plant grows best in rich moderately wet areas in the garden and spreads rapidly by seed, forming dense stands.

Although Justicia betonica grows best in shaded wet conditions in loose sandy soil well enriched with organic material I have found it in my own garden to be very drought tolerant growing on dense dry clay soils being one of the very last plants to wilt during times of drought.

If you do not want Justicia betonica to spread throughout the garden it would be advisable to remove the seed heads before they ripen and scatter the seed far and wide.

Black striped hairtail Anthene amarah amarah

Justicia betonica is an asset to any natural indigenous garden because it is always a pleasant refreshing bright shining green colour and it attracts large numbers of insects in particular wasps, solitary bees as well as butterflies in particular species belonging to the family Lycaenidae and a rage of other colourful bugs.

Juvenile Stink Bug Caura rufiventris

Justicia betonica which is not well known here in South Africa is well known and is widely cultivated in most of the warmer regions of the world in particular in the United States of America as a bedding plant in private gardens and public landscapes.

Justicia betonica grows very easily from seed, transplanted seedling or large cuttings that are simply planted in situ and watered until they have rooted.

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Trema orientalis Pigeon Wood Tree

Trema orientalis is a common pioneer tree which belongs to the hemp (dagga) family, Cannabaceae.

Pigeon Wood Trema orientalis

Trema orientalis has a very wide distribution in the tropical and warm temperate parts of the Old World. It´s range extends from South Africa, through Africa the Middle East, the Indian subcontinent into southern China, Southeast Asia  including the Philippines and Australia.

Over it´s wide range Trema orientalis has many common names which include pigeon wood, charcoal-tree and gunpowder tree

Trema orientalis has considerable ecological significance being a very productive tree

with at least 14 species of butterfly using it as a larval food plant. Many species of birds are attracted to this tree to eat the vast amounts of small berries that it produces almost continuously throughout the year or to feed on the abundant insects which live on these trees. 

Pigeon Wood Trema orientalis berries

In my own garden they are frequented by a large number of bird species which include Black Collard Barbet, Crested Barbet, Yellow Rumped Tinker Bird, Glossy, Black Bellied, Violet Backed and Redwinged Starlings, Purple Crested Turaco, White Eyes, Thickbilled Weavers, Klaas Cuckoo Diederik Cuckoo, Somber Bulbul, Grey Bulbul, Speckled Mouse bird, Ring Necked Doves and many others. 

The vast numbers of tiny greenish yellow flowers are pollinated by various bee species which attract insect eating birds.

Pigeon Wood Trema orientalis flowers

The leaves are also browsed by game animals and can be used as spinach. This tree is a fast growing species found in previously disturbed areas and on forest margins. It is a pioneer species that can grow on poor soil and can be used to regenerate forest areas by providing shade and protection to saplings of forest hardwoods

Trema orientalis is a nitrogen fixing tree which improves soil fertility for other plant species.

From a conventional landscaping point of view Trema orientalis  is not a very suitable candidate for a landscape feature tree because it often looks rather messy due to its leaves being eaten by just about every conceivable insect however it is a must in every garden that strives to encourage wildlife.

Pigeon Wood Trema orientalis leaves eaten by insects

Being a pioneer tree Trema orientalis is very useful when it comes to establishing a new proudly South African garden in particular on poor soils providing shade and a windbreak for other plants that are being established.

Trema orientalis is invaluable when it comes to indigenous forest restoration where it provides shade, nutrients and organic material in the form of dead leaves and vast amounts of excrement from the many insects that feed on its leaves. In addition it provides protection for the slower growing and more tender specimens. Seeds of many trees are also brought onto site by birds which come to feed on the seeds though this may not always be a good thing where undesirable alien plants seeds are brought in by birds feeding on its fruits.