INTRODUCTION 
This Booklet is in the same style as the first, and 
for convenience of those readers who are not botanists we 
reprint the note on structure of flowers. The drawings have 
been made as simple as possible; it is suggested that those 
who find them dull might colour them with water colours 
or crayons. 
A note on the planting of trees may be helpful. If your 
soil is heavy, you should dig a hole three feet deep, to allow 
drainage, and at least three feet wide. When the earth is 
returned to the hole, it should be mixed with as much 
garden compost as you can spare, and preferably also 8 oz. 
of rock phosphate. In light soils, deep digging is not essential, 
but a good quantity of compost improves the water-holding 
capacity of the soil and also provides necessary food for the 
roots. Manure or fertilizer may be given every six months 
after planting for two or three years, after which most trees 
will look after themselves. A litter of dead leaves (renewed 
from time to time) for a radius of at least six feet around 
the young tree is helpful, or a cover crop to prevent surface 
wash . 
A newly planted young tree should be tied carefully to a 
strong stake, sheltered from sun for a fortnight or so with 
palm leaves, and watered regularly if there is no rain. Side- 
branches should be nipped off as soon as they appear, to 
maintain a single stem as high as a clear trunk is desired 
in the mature tree. 
All the trees illustrated in this booklet are suitable for a 
moderate-sized garden. 
R. E. HOLTTUM 
Director 
Botanic Gardens, 
Singapore, August, 1949. 
