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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'.

Kniphofia praecox

(Red-Hot Poker)

This is a must for a stunning winter garden. It is an evergreen groundcover which is frost resistant and fast growing. Plant a clump of them in the sun, in a moist area or a wetland. The orange-yellow flowers make a stunning display in winter and attract birds and butterflies. It is suitable for small gardens and the flowers are long lasting in the vase. Named for Johannes Hieronymus Kniphof ( 1704-1763) a German physician, lecturer, professor of medicine, then dean and rector till his death.

Nymphoides indica

(Water Lily)

This is a pretty, fast-growing, perennial water plant that grows about 30cm x 80cm. It has flat, rounded, floating leaves, and delicate yellow flowers appearing in summer. It makes a useful addition to ornamental ponds and dams, especially for gardeners who may be searching for indigenous alternatives to exotic water plants. It may be planted in the soil at the bottom of a pond in about 30-40 cm of water, although it is fairly tolerant of fluctuating water levels.

Wachendorfia thrysiflora

(Blood Root)

Wachendorfia thrysiflora or Blood root has very distinctive leaves that are pleated. The flower spike can grow to 1.5m and is covered in star shaped yellow flowers. It occurs in the winter rainfall areas so would need watering during the winter on the Highveld. It has beautiful red colouration on the bottom of the stems and their roots are red as indicated by their common name. A very dramatic plant and worth planting near a pond, water feature or dam. This an easy plant to grow and is ideally suited to marshy or swampy conditions in full sun or semi-shade, but will also grow in soil that is not waterlogged provided it gets ample water particularly during winter and spring. A generous mulch of compost is also very beneficial. It is evergreen if it is given water all year round, but if given total summer drought it may die down and go dormant. Wachendorfia thyrsiflora is invaluable in difficult, permanently wet areas, is an attractive addition to the water garden where it can be planted at the waters edge or where the water overflows, and it makes an excellent backdrop to the herbaceous border. It attracts birds and butterflies. Named for Evert Jacob van Wachendorff (1702-1758)

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