Juniperus procera - African Cedar

A beautiful afro-montane tree often reaching 30-35 m high; can reach 50 m, actually the largest tree of its genus. Altitude: 1100-3500 m, Mean annual rainfall: 400-1200 mm Soil type: Prefers well-drained soils no heavier than sandy clay. Can be found scattered on rocky sites.

Olea europaea subsp. africana - African Olive 

A neatly shaped evergreen tree with a dense spreading crown (9 x 12 m) of glossy grey-green foliage. Leaves are dark-green above and greyish below. The rough, grey bark sometimes peels off in strips.This tree is found in a variety of habitats, often near water, and on rocky hillsides, on stream banks and in woodland (where it can reach 12 m). It is widespread in Africa up to 2,500m.

Dombeya torrida - Dombeya 

A deciduous tree with an umbrella-shaped crown; it can grow 7 - 24 metres tall. The bole is generally slightly curved or crooked, up to 120cm in diameter. Forest, scrub, secondary bushland, grassland and cultivated land, at elevations from 1,600 - 3,400 metres

Sesbania sesban - Sesbania

A narrow-crowned, deep-rooting single or multi stemmed shrub or small tree,

1-7 m tall. The trees usually have a main stem but may develop many side branches if widely spaced. S. sesban grows well all over Kenya and is significant in extending the nitrogen-fixing forage trees into cooler, higher elevation regions of the tropics. It has outstanding ability to withstand waterlogging and is ideally suited to seasonally flooded environments. It is common along streams, swamp banks and moist and inundated bottomlands and old quarries.