Hardy and half-hardy perennials
VERBENAS raised from the best strains of seed come true to colour and
the plants are models of health and vigour, and make resplendent beds.
It is of the utmost importance to remember that the Verbena requires
very little of
the artificial heat to which it is commonly subjected,
and which fully accounts for the frequency of disease among plants
propagated from cuttings. Seed may be sown in boxes in January,
February, and March, the earlier sowings naturally requiring more heat
than the later ones. As the seedlings become large enough, they should
be potted on and planted out in May, when they will flower throughout
the summer, and far into the autumn.
Verbenas may also be sown in March or April in boxes, put into a frame,
and if kept moist a lot of plants will appear in about a month. When
large enough these must be carefully lifted and potted. A rich, mellow,
and very sweet soil is needed by the Verbena. Many of the failures that
occur in its cultivation are not only traceable to the coddling of the
plant under glass, but also to the careless way in which it is often
planted on poor worn-out soil that has been cropped for years without
manure, or even the sweetening effects of a good digging. Raising
Verbenas from seed has restored this plant to the list of easily grown
and thoroughly useful flowers for the parterre.
The hardy perennial V. venosa also comes perfectly true and uniform
from seed.
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Next: VIOLA
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