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Question: broom

S.O.S.Buongiorno sigg.ri, I have a yellow / brown broom that within a year and a half has reached a height of approx. 2 meters from 30 cm. which was. This year has made very few flowers compared to last spring. In September 2011 I pruned it in height. Currently it has several sprigs with dry leaves, new bright green sprigs are sprouting from the base, it does not suffer from lack of water since it is served by the irrigation system. WHERE IS IT WRONG? thank you so much. Fiorenza

Answer: broom

Gentile Fiorenza,
the term broom indicates some species of shrubs of Mediterranean origin, all fabaceae, which produce typical yellow papilionaceous flowers; given the behavior of your plant I think it is a spartium, a beautiful shrub originating from the marine areas of our peninsula, and Spain, very widespread in the gardens even in the varieties with colored flowers. It produces semi-woody stems, green in color, which perform most of the photosynthesis that the plant needs; in fact the leaves are tiny, almost needle-like, and fall in autumn. This shrub is very resistant to cold, heat, drought, pollution; it has some defects, one of these is just a disordered development, which generally leads the shrubs, over the years, to develop widely in the upper part, emptying itself instead to the foot. This type of development can be favored by poor lighting conditions, or from cultivation in areas of the garden that receive a few hours of direct sunlight; another cause of acceleration of this development consists in the excess of mineral salts in the soil, in fact the spartium prefers poor, sandy or stony soils. In any case it is possible to reconstitute a dense and compact appearance, simply by regularly pruning the shrub; generally we proceed by pruning up to 25-35 cm from the ground, in the event that it is necessary to renew the entire plant, but we can also practice lighter prunings, with the aim of favoring the production of shoots in the lower part of the shrub. Pruning is practiced in autumn, or in late winter-early spring.