A host of enemies attack Cinerarias; indeed, there is scarcely a pest known to the greenhouse but finds a congenial home upon this plant.  Mildew is more common in some seasons than in others.  As a rule, it appears during July and August, especially after insufficient ventilation, or when the plants have been left too long in one place or too near to each other.  Obviously weakness invites attack, and the necessity of robust and vigorous growth is thus effectually taught.  On the first appearance of a curled leaf, dust the foliage and soil with sulphur, and give no water overhead until a cure has been effected.  The aphis is easily killed by fumigation carried out on a quiet evening.  Some gardeners prefer to give an hour or two once a week to the removal of the pest by means of a soft brush.  From three to four dozen plants are easily cleansed by hand in the time named.

==Star Cinerarias== (=C. stellata=) are grown under precisely the same conditions as the Florists’ or Show Cinerarias, and this type of flower is highly valued for its singular gracefulness and beautiful decorative effect.  In the conservatory and on the table it is an indispensable plant.  The sprays admit of most charming arrangements in vases with any kind of ornamental foliage, and maintain their beauty for a long time in water.

==Intermediate Cinerarias==.—­These new types of Cineraria, which in habit are intermediate between the Large-flowered and Stellata classes, make admirable subjects for table decoration, as well as for the adornment of the conservatory or greenhouse.  In this class the Feltham Beauty strain undoubtedly has a great future before it.  Originated at the Feltham Nurseries, this strain has attracted considerable attention at the numerous horticultural meetings where it has been exhibited, and since it passed into our hands a few years ago some very beautiful colours not to be found among the ordinary Stellata varieties have been added to it.  The distinctive feature of the flowers is the white centre, which greatly enhances the vividness of the colouring of the petals.  For the Intermediate section the same methods of culture as advised for the other classes of Cineraria will apply.

==Clarkia==

==C. elegans.  C. pulchella.  Hardy annuals==

The two distinct classes of Clarkia named above include several varieties that have long been freely grown in gardens as summer annuals.  But the very beautiful recent introductions in the Elegans class have lifted these flowers to a higher plane of usefulness for producing brilliant sheets of colour in beds, borders, shrubberies, and beside carriage drives.  Although all the Clarkias bloom profusely in ordinary garden soil they well repay liberal treatment.  Seed may be sown from March to May, or in September if an early display is wanted.  In good ground each plant of the Pulchella varieties should be allowed a space of eight or ten inches, but rather more room must be given to the Elegans class to do the plants justice.