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Rose flowers

Information and botanical notes

The plants ascribed to the genus Polianthes, belonging to the Agavaceae family, are commonly called tuberous. However, recent studies argue that tuberoses should be moved to the Agave genus, presenting different genetic and morphological affinities with them. The genus includes more than thirty species similar to each other, with shrubby or bushy habit, together with numerous varieties and artificially produced hybrids. The appearance of the plant resembles that of the lily, with tapered and lanceolate leaves of a glossy green color. Depending on the species, one or two stems develop from the center, each bearing panicle inflorescences. The tuberose flowers are trombiform and composed of six or more petals, with colors ranging from pure white to fuchsia, passing through the various shades of pink.

The Polianthes tuberosa


The most common species of tuberose among ornamental crops is Polianthes tuberosa, from which the common term for these flowers comes. The Greek name refers to the roots of this plant, which are precisely tuberous; the name Polianthes, on the other hand, means «many flowers», thus bringing it back to the abundant flowering of this plant. The flowers of Polianthes tuberosa are of medium size, trumpet-shaped, composed of five or six white petals. The most popular cultivars for creating compositions, or for beautifying gardens, are called «Pink Sapphire» in English. These varieties come with single or multiple petals, ranging in color from pale pink to antique pink, with many double-colored hybrids (center of pink flower and white petal edge).

Care and cultivation


We start first from the bulb: it is easy to find them in nurseries and gardening, but online there is a wide variety of sites that sell the most beautiful cultivars, including those with pink flowers. They should be planted in March or April at a depth of about ten centimeters, taking care to prepare a well-drained soil with pozzolana or abundant river sand (all tuberoses fear water stagnation). Watering will be moderate, allowing the soil to remain moist but not soaked, and when the first shoots appear (generally two weeks after sowing), a fertilizer diluted with water in equal parts, rich in nitrogen, potassium, will be applied every ten days. and phosphorus. The plants can be transferred to the garden (if planted in pots), placing them in an area that is irradiated by the sun at least eight hours a day, since too long a period would cause damage to the leaves. In summer, or at the end of it, the flowers will sprout and will last until late autumn; in this phase, flowers and leaves that begin to dry must be gradually eliminated to avoid the attack of parasites and bacteria.

Rose flowers: Prune tuberose flowers


During the flowering period you can prune the still fresh tuberose flowers to bring them indoors, thus creating a potted arrangement. The plant, in fact, is not affected by cutting if it is done correctly. First of all, get some well-sharpened and sterilized shears, which will cut the stem about 15 centimeters from its underground base. The inflorescence is then transferred to a vase with fresh water, preferably demineralized or rain water, and placed on a window or in a well-lit place. Every other day it is good to change the water and eliminate the basal part of the stem that tends to yellow, in order to allow the flowers to resist longer. If the flowers do not want to be cut, it is still good to remove from the mother plant those that dry up gradually. At the end of autumn,

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