a genus which includes some species of small evergreen shrubs, sometimes cultivated as lively plants or as annual, originating in Central America. The cestrum nocturnum have long erect stems, slightly drooping at the apex, which form wide tufts, which tend to widen, seen that the plant produces new stems during the whole vegetative period; the stems are 50-100 cm long and carry numerous oval leaves, of a bright green colour, glossy, pointed, alternate; they tend to be slightly climbing.
During the whole summer, at the apex of the stems, big roundish inflorescences bloom, formed by several elongated tubular flowers, of white, yellow, orange, red or purple colour, at times intensely perfumed. In order to favour a more prolonged flowering, it is better to cut down, at the base, the stems carrying the withered inflorescences; by the end of summer, the flowers give way to small roundish berries, of green colour, red-brown when ripe.
Cestrum nocturnum produces yellow-greenish flowers, which bloom only at night, giving off a very intense scent, which some find unpleasant, ripe berries are white.
I cestrum nocturnum are to be placed in a very sunny place, or even in shady areas for some hours of the day; usually they can bear temperatures of some degrees below zero, in places with very cold winters, they are to be protected, from October to February, with tnt.
The nocturnal jasmine is only a partially rustic variety and therefore it fears the cold more than the other species; for this reason, it is a plant suitable only for areas with mild winters. Being climbing plants, with flexible stems, it is good to remember to place them in a place protected from the wind.
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In order to have an abundant and prolonged flowering it is advisable to water the night jasmine regularly, during the vegetative period, while in winter we provide water once a month or so; in any case these plants can withstand even long periods of drought, without suffering too much. It is good to check that there are no dangerous water stagnations, which would not be beneficial to the health of the plant.
From March to September add to the water of the watering of the specific fertilizer for flowering plains, every 10-15 days.
Nocturnal jasmine shrubs love soft, light and very well drained soils; when planting a cestrum nocturnum is always good to add sand to the ground, and place gravel at the bottom of the hole where the plant will bury. These plants can also be grown in pots, preparing a very large container, so that the shrub can develop better.
The multiplication of these plants takes place by seed, in spring; it is possible to multiply the cestrum also by cutting, or by taking the new shoots at the base of the plant, which they root with great ease.
Night jasmine – Cestrum nocturnum: Parasites and diseases
As these plants are only partially rustic, it is important to ensure that they are not affected by pests and diseases.
Aphids and mites can damage flowers and leaves and, in this case, it is advisable to intervene using specific products that will effectively counteract the presence of parasites.
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