The plants require shelter from the cold wind from the
North, or West, this, however, if carefully trained, they will form for
themselves, but until they do so, it is impossible to make them blossom
freely, the higher branches should be allowed to droop, and if growing
luxuriantly, with the shoots not shortened, they will the following
season, produce bunches of flowers at the end of every one, and have a
very beautiful effect, no pruning should be given, except what is just
enough to keep the plants within bounds, as they invariably suffer from
the use of the knife. This rose is easily propagated by cuttings or
layers, both of which root readily.
The _China rose_ thrives almost anywhere, but is best in a soil of loam
and peat, a moderate supply of water being given daily during the hot
weather. They will require frequent thinning out of the branches, and
are propagated by cuttings, which strike freely.[139]
As before mentioned, Rose trees look well in a parterre by themselves,
but a few may be dispersed along the borders of the garden.
_Insects, &c._ The green, and the black plant louse are great enemies to
the rose tree, and, whenever they appear, it is advisable to cut out at
once the shoot attacked, the green caterpillar too, often makes
skeletons of the leaves in a short time, the ladybird, as it is commonly
called, is an useful insect, and worthy of encouragement, as it is a
destroyer of the plant louse.
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