genus that includes some species of small evergreen shrubs, sometimes cultivated as lively plants or as annuals, originating in Central America. The cestrum nocturnum have long erect stems, slightly falling at the apex, which form large clumps, which tend to widen, given that the plant produces new stems during the whole vegetative period; the stems are 50-100 cm long and carry numerous oval leaflets, bright green, shiny, pointed, alternate; they tend to be slightly climbing. Throughout the summer at the apex of the stems large roundish inflorescences bloom, consisting of numerous elongated tubular flowers, white, yellow, orange, red or purple, sometimes intensely scented. To favor a more prolonged flowering it is good to sever the stems that carry the withered inflorescences at the base; at the end of summer the flowers give way to small roundish berries, green, red-brown when ripe. Cestrum nocturnum produces yellow-greenish flowers, which bloom only at night, giving off a very intense aroma, which some find unpleasant, the ripe berries are white.
THE cestrum nocturnum they must be placed in a very sunny place, or even in shaded areas for some hours of the day; usually they can stand temperatures a few degrees below zero, in places with very cold winters they should be protected, from October to February, with tnt.
Nocturnal jasmine is a variety only partially rustic and therefore 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.
In order to have an abundant and prolonged flowering it is advisable to water the nocturnal jasmine on a regular basis, during the vegetative period, while in winter water is supplied about once a month; in any case, these plants can withstand even long periods of drought, without suffering too much. It is good to check that water does not form dangerous stagnations, which would not benefit the health of the plant.
From March to September, add a specific fertilizer for flowering plants to the water, every 10-15 days.
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Nocturnal jasmine shrubs love the soft, light, very well drained soils; in placing a home cestrum nocturnum is always good to add sand to the soil, and place gravel on the bottom of the hole where the plant will stop. These plants can also be grown in pots, providing a very large container, so that the shrub can develop at its best.
The multiplication of these plants occurs by seed, in spring; i can be multiplied cestrum also by cutting, or by taking the new shoots at the base of the plant, which root with great ease.
Night jasmine - Cestrum nocturnum: Pests and diseases
Since these plants are only partially rustic it is important to check that they are not affected by pests and diseases.
Aphids and mites can ruin flowers and leaves and, in this case, it is good to intervene using specific products that will effectively counteract the presence of parasites.