ANNUAL VINES 65 
There is something about the moon-flower that 
appeals so strongly to most people who see it 
that I feel sure that if it were better known it 
would be more popular. This also demands the 
same general treatment as the morning glory. 
The east or west side of a building is the best 
exposure for the moon-flower. If the plant is 
on the east side, the flowers will open early in 
the afternoon; if on the west side, the flowers 
will stay open till noon. Plant one vine on each 
side and you can have moon-flowers all day, 
but avoid the north, as it is too shaded. The 
seed must be cut or filed, for without this help 
fully fifty per cent. will fail to sprout. For best 
results, plants should be started in the green- 
house during March. Some florists raise them 
in large numbers and the plants can often be 
bought quite cheaply. Under favourable con- 
ditions, the moon-flower vine will grow to a 
height of twenty feet. As it grows rapidly, its 
lobed foliage making a dense mass, it is an excel- 
lent screen. 
A similar plant is I. rubro-cerulea which was 
brought into prominence in California by the 
introduction of the variety Heavenly Blue. 
It grows to twice the height of the common 
morning glory, or, say, twenty feet. The flower 
