Climbing evergreen plant native to Central and South America. The thin and fleshy stems grow rapidly, this plant is grown in hanging pots, or as a climber, helped by racks or guardians. The leaves are oval, dark, glossy, thick, slightly pubescent on the underside; in spring and summer it produces a cascade of large trumpet flowers, gathered in racemes, delicately scented, red, pink or white, with a lemon yellow throat. In places with mild winters they can also be grown in the open ground in the garden, or they can also be treated as annual garden plants. It is advisable to lightly prune the branches in the early spring or autumn, to prevent the plant lignifying too much on the lower part, losing its leaves. It is also known as mandevilla splendens.
The Mandevilla Splendens likes very bright locations, even sunny, but it also grows well in partial shade. If placed in a completely shaded place it produces few flowers and many leaves. Fears frost, should not be exposed to temperatures below 5-8 ° C, so in summer it can be placed in the garden or on the terrace, but it must be immediately withdrawn into the house with the arrival of autumn cold. In places where winter is mild it is also cultivated in the open ground; in this case with the cold it loses the leaves, which will re-emerge in spring; in the ground it can reach even sizes over 3-4 meters.
GENERALITY'Substrate Normal, rich and well drainedExposure Bright, no direct lightIrrigation Abundant without stagnation, it requires vaporisationsFertilizer Every 10 days during floweringAvversitа Mites, cochineal, root rotMinimum temperature 8-10 ° CIdeal temperature 21 ° Cwatering
It does not require large amounts of water and easily withstands short periods of drought; water regularly, leaving the substratum to dry between one watering and another. Water sporadically in winter. For a better flowering of the mandevilla splendens it is recommended to provide fertilizer for flowering plants every 8-10 days in the vegetative period, from March to October, and at least once a month in winter.
Their bearing, as we have said, is mostly climbing or at most decombant. They must therefore be cultivated in pots (or directly in the open ground), but giving them the possibility of holding on to a support with tendrils. Great it can be a bow, a net or a trellis. They can also be kept in vases (quite large) and cascaded down in the manner of surfines.
The mandevilla splendens prefers loose, well-drained soils, very rich in organic matter. An optimal mixture can be prepared by mixing balanced universal soil and sand in equal parts, with a small dose of humus.
It occurs by cuttings, in spring or summer, using 7-10 cm twigs; the rooting of the cuttings is usually rapid motion, about 3-4 weeks, the seedlings thus obtained can immediately be treated as adult plants, placing them in a single container. The fastest method to obtain new plants is undoubtedly the cutting.
A semi-woody branch about 8 cm long, at the height of a knot, must be cut without creating fraying and with a disinfected scissors. The basal leaves must be eliminated and must be sprinkled with a rooting product in powder or liquid.
It is then necessary to insert it in a half transparent plastic bottle (to which drainage holes have been previously made on the bottom) filled with a very light substrate (the ideal is sand, peat and agriperlite in equal parts) which must be kept constantly humid. The whole is to be covered with a transparent bag and kept at a temperature of about 25 ° C in the shade. Usually the cutting will begin to vegetate in about a month. Thanks to the transparent bottle we can control the development of the roots.
When the plant releases the first leaves we will be allowed to remove the plastic cap and wait for a good root development and then move it to a final container with a richer substrate.
Dipladenia is a vegetable that flowers substantially on new branches, therefore those grown in the year. It is therefore good to proceed with a good pruning every autumn, before withdrawing the plant.
We must cut the very low branches, about 5 cm from the ground. This will allow the plant not to waste energy during the cold season and will avoid the possible onset of mold.
In spring, the plant will again reject and we will have a rich, luxuriant plant with copious blooms.
|May --- October||Flowering, irrigation, vaporization, fertilization|
|OCTOBER||Collection in cold greenhouse, pruning|
|October to April||Keep the substrate and the environment slightly damp|