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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'.

Combretum erythrophyllum

(River Bushwillow)

This is a medium to large deciduous tree with reddish autumn colours. Flowers are cream to pale yellow, slightly scented and open in September to November. The fruit are small, 4-winged and a greenish brown colour, ripening to yellowish brown and drying to a honey-brown. They stay on the tree for a long time. The fruit is poisonous and results in hiccups. A popular shade tree, surprisingly drought and frost resistant and fast growing, reaching 4-6 m in three years. The gum has interesting antibiotic properties and is applied to sores. It is non-toxic, elastic, producing a non-cracking varnish. Ornaments, cattle troughs and grain mortars are made from the wood, which is yellow, tough and easily worked. It is also used as fire wood. A dark, rich brown dye is extracted from the roots which is used when tanning hides. The dried fruits also work well in flower arrangements and are eaten by pied barbets. It has non-aggressive roots and attracts birds. It is the larval host plant for several butterflies like Liordes Hairtail, Red -tab Policeman, Two-pip Policeman and the Orange-barred Playboy. I just love these charming butterfly names! It is an ideal tree for wetlands as well as game farms as it is browsed by Kudu, Bushbuck, Eland, Giraffe and Elephant. It is often used as a street tree, in large gardens and along rivers. There are many medicinal uses. Root bark and stem bark are used to treat a cough, infertility, leprosy and VD. The bark is taken during labour to ease childbirth, to treat infertility and as an aphrodisiac. The leaves are used for coughs and abdominal pains.The roots, which some regard as poisonous are used as a purgative, to treat venereal diseases and as a prophylactic for V.D. The roots are fed to dogs by the Zulu to fatten them up.

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