Portulaca, though cousin to the objectionable "pusley," is most useful
where mere colour is wanted to cover the ground in beds that have held
early tulips or other spring bulbs, as well as for covering dry, sandy
spots where little else will grow. It should not be planted until really
warm weather, and therefore may be scattered between the rows of
narcissi and late tulips when their tops are cut off, and by the time
they are quite withered and done away with, the cheerful portulaca,
feeding upon the hottest sunbeams, will begin to cover the ground, a
pleasure to the eye as well as a decorative screen to the bulbs
beneath, sucking the fiercest sun rays before they penetrate.
Chief among the low-growing worthies comes the verbena, good for
bedding, good for cutting, and in some of the mammoth varieties subtly
fragrant. Verbenas may be raised to advantage in a hotbed, but if the
seed be soaked overnight in warm water, it will germinate freely out of
doors in May and be a mass of bloom from July until late October. For
beds grouped around a sundial or any other garden centre, the verbena
has no peer; its trailing habit gives it grace, the flowers are borne
erect, yet it requires no staking and it is easily controlled by
pinching or pinning to the soil with stout hair-pins.
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