PLANTS WORTH GROWING 103 
They are borne on long straight stems, and are very 
decorative. Both varieties come practically true 
from seed, and wherever one has a sloping bank, 
or a particularly dry spot that is difficult to furnish 
the Catanauche should be given a trial. It is 
necessary to plant a good number of plants fairly 
close together to produce a pleasing effect. 
Cedronella. — ' Balm of Gilead ' is the name given 
to Cedronella cana, and it conjures up sensations 
of grateful fragrance, at once soothing and in- 
vigorating. Nor is one's fancy doomed to shattering 
disappointment, for fragrance, fresh and strong, is 
the great attribute of an otherwise modest plant. 
Forming a bush of twiggy, rather brittle branches, 
densely clothed with small grey-green leaves, the 
plant throws up a number of stems to a height of 
two feet or over, nestling to which are brownish 
or chestnut-crimson flowers, by no means gorgeous 
in display but specially enjoyable in the twilight 
of a summer's evening when their fragrance is 
most pronounced. Seeds will germinate freely, and 
almost any side-shoot stripped off with a ' heel ' 
will root in a compost of sand, leaf-soil and loam 
in equal proportions. 
Centaurea. — The name Perennial Cornflower may 
appropriately be applied to some species of Cen- 
taurea, but there are some that would more aptly 
be described as Golden Thistles. Of the Corn- 
flower tribe C. montana and its varieties are the 
best known. There are blue, pink, red, and white 
