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Euphorbia ingens

(Common Tree Euphorbia)

An upright, succulent tree with a dark green crown which is well rounded and often shaped like a hot-air balloon. Grows up to 12 m. The branches are segmented with spines running along the ridges of the segments. It produces small, greenish yellow flowers on the ridges of the topmost segment of every branch from autumn to winter. The fruit is a round 3-lobed capsule which turns red to purple when ripening. These plants are easy to grow and make a wonderful addition to a succulent garden or rockery. As it is a succulent it needs little to no maintenance, being a very drought hardy plant. It does best in the open sun. Because of its poisonous latex/sap no pests seem to bother these trees. The latex of this tree is extremely toxic and can cause severe skin irritations, blindness and severe illness to humans and animals if swallowed. Grass is soaked in the latex and used as fish poison. it is also used medicinally in small amounts to treat cancer. The wood is used for boats, doors and planks. The trunk is first burnt to solidify the latex before it is cut as the latex in the eyes can cause blindness. It can be used for hedging and screening and an effective thorny barrier. It is frost tender. The fruit is enjoyed by monkeys while porcupine and cane rats eat the roots. The name is derived from the Greek eu=well and phorbe=pasteur referring to the Greek physician Euphorbus.

Searsia chirindensis (Rhus chirindensis)

(Red Currant)

The red currant is a semi-deciduous shrub to small tree, 6-10 m tall although it may reach 20 m. Young and coppicing branches are armed with spines, although the mature tree is spineless. The flowers are small, yellowish green and are borne in clusters at the ends of the branches from August to March. Male and female flowers occur on separate trees. The edible fruit, which is round, shiny, slightly fleshy, dark reddish brown are borne from December to March, in heavy clusters which can weigh down the branches. They are also enjoyed by people and fruit eating birds like pigeons, louries, bulbuls, barbets and parrots as well as monkeys. The leaves and the bark are browsed by Black Rhino, kudu, duiker, bushbuck and nyala. It can be grown in full sun or partial shade and should be planted in well-drained, composted soil. It does not have an aggressive root system. It will tolerate moderate frosts and is drought hardy. The sap of this tree is used in traditional medicine for treating heart complaints. The bark is also used to strengthen the body, to stimulate circulation and in the treatment of rheumatism and mental disorders. It is the larval host for the Macken's Dart, Burnished Opal, Mooi River Opal, Namaqua Arrowhead and the Pringle's Arrowhead butterflies. The wood is red and is used to make furniture. We have had Mopani worms on the tree in our nursery which delighted my staff as they eat them. A lovey shade tree. Plant it 4 meters from a building or a pool. The name is derived from the Greek rhous, = red; referring to the fruits or the autumn leaves. Named for Paul Sears( 1891-1990) a US plant ecologist and professor who authored many books.

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