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Vachellia xanthophloea (Acacia xanthophloea)

(Fever Tree)

This large sized deciduous tree is fast growing in the sun or semi-shade .It also grows well in a swampy, low lying areas and clay soils. It was originally thought that the tree caused malaria, hence it's common name. It was the swampy conditions that caused the malaria. The fragrant yellow flowers open in Spring and smell like vanilla which attracts insects and insectivorous birds. There is also a white flowering form. First hand experience shows that it has an aggressive roots system, although some books claim that they are non aggressive. Plant it 6 meters from a building or a pool. The beautiful yellow bark makes it distinctive and highly sought after, but be aware that they are frost tender when young. It is a useful tree as it has medicinal bark, edible gum and the timber is used for boxwood, furniture and carving as it is hard and heavy. Elephants eat the young branches and giraffe, monkeys and baboon eat the leaves, flowers and the pods. Weavers like to build their nests in these trees, probably because the thorns help to protect them. The bark is used as a good luck charm and it is used medicinally, mixed with dried roots to treat malaria and to treat fevers and eye complaints and the bark is rolled into small balls and chewed for a cough and sore throat. Branches are used to protect fields from hippo. This is a popular bonsai subject. Unfortunately this fungal disease is rather common on Fever Trees. The fungus has been identified as a rust, similar to Uromyces. The suggestion is to totally spray the trunks with triazole type fungicides. (Defender or Bumper 30 ml per 100 L water) Probably the most popular treatment is a total drench with Trichotec --- Trichoderma spp. A living fungi that is antagonistic to many other pathogenic fungi. After the drench it is essential to cover as much of the treated trunk with newspaper to shield the Trichoderma from ultra violet light for a few weeks. Preventatively - be careful as weed-eater damage can initiate an infection. If this is not successful, call an arborist for their opinion and treatment. Named for Rev George Harvey Vachel (1798-1839) a British priest and plant collector. He was chaplain to the British East India company in China where he collected plants. Rudyard Kipling's story 'The Elephant's child' immortalised the specie with 'The banks of the great grey-green, greasy Limpopo River, all set about with Fever Trees'.

Schotia brachypetala

(Weeping Boerbean)

This large, handsome, evergreen tree is drought resistant and relatively frost resistant in warm areas. It is found in riverine forests so is adaptable as it grows in the sun, shade or semi-shade. It occurs naturally in Botswana, Zimbabwe, Transvaal and Natal. The stunning rich, deep red flowers open in spring and summer and they attract birds, the insect, fruit and nectar eaters. They are also eaten by louries, parrots, baboons and monkeys. It flowers best after a long dry winter so don't be tempted to water it in the winter. The leaves are browsed by baboon, giraffe, impala, nyala and black rhino. It is also used for nesting sites and attracts Foxy and Giant charaxes butterflies. The bark is traditionally used to make sangoma's red dye and the seeds are roasted and eaten. The seeds were eaten by the early Boers. It’s a magical tree and is used to ward off evil. There are many medicinal uses as a decoction is drunk after excessive beer drinking and for heartburn, nausea and diarrhoea. The smoke from the leaves is inhaled for nose bleeds. Powdered leaves are put on ulcers to speed up healing. The bark contains tannin and is used for tanning leather. The wood is hard and is used for furniture, flooring and fuel. It’s a show stopper when in flower but do remember that it drops nectar on parked cars, hence the common name! The roots are not aggressive so plant it about 3 meters from a building and a pool. This is a popular bonsai subject. The Tsonga common name of "Mvhovhovhoz" imitates the sound of the swarming insects at flowering. Named for Richard van der Schot ( 1730-1790) a Dutch gardener who studied at Leiden and became head gardener at the imperial Gardens at Schonbrunn. He was then asked to take a 4 year journery to Grenada, Saint Vincent, Aruba, Cuba and Curacao to collect tropical plants and 'curiosities' for the palaces natural history collection.

Senegalia galpinii (Acacia galpinii)

(Monkey Thorn)

This deciduous tree loses its leaves during the winter and is drought and frost resistant. It has a large rounded crown and is fast-growing as it can reach 25-30 m. The flower buds are purple-red and the creamy white, spike flowers open during September-October. They smell of honey! Reddish to purplish brown pods ripen during February-March. It survives hot and dry conditions and is a stunning tree as a street tree provided there is sufficient space. It is an ideal tree for a big garden. It is grazed and used for shade by giraffe, kudu and elephant. Many birds nest in this tree as it provides protection. We have a pair of grey Hornbill that nest in one on our property. It provides dappled shade on hot summer days, making it an ideal tree for planting on a lawn where some sun can penetrate. Many insects such as bees and wasps visit the flowers so it also attracts insect eating birds. The bark is used for rope and the wood is used for furniture. Mature trunks are rough and the bark often flakes away in rectangular patched. This tree has aggressive roots so don't plant it closer than 8 meters from a building or a pool. Named for Ernest Edward Galpin (1858-1941)a South African botanist and banker. He left 16,000 sheets to the Natural Herbarium and several species are named after him. .

Vachellia sieberana (Acacia sieberiana var. woodii)

(Paperbark Thorn)

This tree occurs in Northern Namibia, Botswana, Zimbabwe, Transvaal, Swaziland and Natal. It is easily identified by its dense, widely spreading foliage, a flattened crown and flaking bark. The fluffy, scented white pompom blooms are conspicuous against the deep green, feathery foliage. The papery bark is exceptionally attractive and peels off in flattish strips, displaying yellow under bark. The bark is highly flammable and sensitive to fire, so perhaps it’s best not to build a braai under it. Legend has it that one should write one’s wishes on a piece of bark and blow it away. This apparently guarantees that your wishes will be fulfilled. The bark shelters insects which are foraged by insect eating birds. The Buffalo Weavers nest in these trees. Pied and Crested Barbets like to make nesting holes in the bark. The bark is also used to create a grey dye. It will remain evergreen in a moist habitat but in cooler or drier parts it is semi or completely deciduous. The paired, white thorns are joined at the base and grow up to 100 mm in length. The light brown pods have a musty or fruity smell and are 100 to 200 mm long. The pods are browsed by game and the Grey Hornbills crack open the pods to eat the seeds but the leaves contain prussic acid which is dangerous to stock. A wonderful nesting and lookout site for many birds, and is a ‘food basket’ for a variety of birds, beetles, bees and other bugs. It is the larval host of the Black-striped Hairtail, Common Scarlet and the Silver-spotted Grey. It is medicinal as an infusion from the roots is used as an antiseptic and a bark decoction is a painkiller. It is also used to wash children who have a fever, stomach ache, acne, gonorrhoea, colds, tapeworms and diarrhea. The leaves are a vermifuge. The wood is used for general timber although easily damaged by insects. It is fasts growing and would make useful firewood and timber. It is often seasoned under water for 6 months to make it more durable. The gum is clear and of a good quality. Soot is added to the gum to make ink.It has been recorded as growing to about 200 years. It has aggressive roots so don't plant it closer than 7 meters from buildings and pools. This is a popular bonsai subject. Branches fall from these trees. All thorn trees drop their thorns so it is not suitable for a lawn. Named for Rev George Harvey Vachel (1798-1839) a British priest and plant collector. He was chaplain to the British East India company in China where he collected plants.

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