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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'.

Crinum campanulatum

(Water Crinum)

A deciduous groundcover that grows about 40cm high, but it requires some effort as one should leave it in the pond during summer and remove it from the water in winter to prevent the bulb from rotting. It is a true aquatic species that needs to be placed under water in order to flower. It requires full sun and is an ideal plant for water gardens. The name is derived from the Greek 'krinon'= lily.

Dierama pendulum

(Harebell or Angel's Fishing Rod)

This deciduous bulb grows to 1m x 1m in the sun. It is frost resistant. The sprays of pink flowers occur in summer and it is a show stopper when in full bloom. As it occurs in wetlands and along our rivers it is suitable for a bog garden or near a water feature. Burning in winter promotes flowering. The corms are placed in gourds as a charm for a good harvest. They are also crushed and used on bruises. The flowers are are mixed with hot water and the juice of the Sour Fig (Carpobrotus) leaf and applied to bites, stings and rashes. The bulbs are also medicinal as they are used as a purgative or an enema. The name is derived from the Greek 'diorama'=a funnel which refers to the shape of the flower.

Gunnera purpensa

(Wild Rhubarb)

Gunnera purpensa Wild Rhubarb This deciduous shrub grows to about 1m in the sun. It is frost resistant and produces reddish brown flowers in spring. As it grows along our rivers it is useful for wetlands or in a dam. The stems and roots are peeled and eaten and it also has medicinal value. The large leaves are 30 cm wide and are attractive next to a water feature. The leaf and flower stems can be eaten raw or cooked. The underground stem is used to promote the expulsion of the afterbirth in stock and in humans. An infusion is used to treat urinary disorders and psoriasis. It is also mixed with a Crinum bulbispermum to treat rheumatic fever pain. The roots are used to treat male and female infertility. , rheumatic fever, poor appetite, abdominal pain, colds and flu and to cleanse the blood. Named after Johan Ernest Gunnerus ( 1718-1773) who was a Norwegian clergyman, collector and scholar. He discovered many plants, birds, fish and animals. This is a protected plant in South Africa.

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