A genus that includes about one hundred species of orchids, mainly terrestrial, originating in Central and South America. They do not have pseudobulbs, they have fleshy roots which tend to widen giving origin to new plants, thus forming wide and thick tufts of elongated leaves, furrowed by deep veins, bright green. From the foliar axil grow in spring long reddish stems on which grow numerous flowers, which bloom one at a time for a few hours.
The flowers are very large, pink, yellow, orange, white; they have the shape of a trumpet, with a pronounced labellum and usually coloured in the centre of yellow. Most species reach the 50-60 cm of height.
As for exposure, these beautiful varieties of orchids like very bright locations, but away from direct sunlight. As with all species, if placed for too many hours in direct sunlight, the rays could burn the leaves or damage them irreparably. Therefore, avoid the expositions in full sun, in particular during the summer period.
They can however spend the warm seasons outside, in the shade of trees or shrubs; in autumn, they are to be admitted in the house or in a temperate greenhouse, at an average temperature of 18-20°C.
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- They decorate terraces, balconies and garden corners.
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The sobralia orchids need regular watering throughout the growing season, from March to the end of October, we recommend keeping the soil slightly moist. In winter, water moderately, as the plant has a period of vegetative rest and does not need abundant irrigation. Every 15-20 days provide specific fertilizer for orchids.
Most sobralie orchids are soil, so they need a slightly different soil from the one usually used for orchids; cultivate them in a compound made up of bark, peat and universal soil, mixed with sand to increase drainage. The soil is fundamental for the good growth of our plants; this is because it is from the soil that the plant species acquire the main nutrients they need to survive and to develop at their best.
Therefore, follow the instructions listed above to obtain vigorous, healthy plants of great visual impact for your home.
Generally, the multiplication of the orchid sobralia occurs by division of the heads and is practiced preferably at the end of flowering or in autumn, the new plants should be placed immediately in individual containers filled with the above compound.
Sobralia: Pests and diseases
The sobralia orchids are particularly afraid of the attack of the crocodiles and aphids; these tiny parasites, feeding on the sap contained in the leaves of the plants, deprive it of the strength and vitality that allows them to grow at their best. To solve the problem, you should buy specific pesticide products available at the main garden centers or nurseries in the area.
In addition, another problem could be related to irrigation; if the watering is excessive or the soil poorly drained can easily be attacked by root rot, especially during the winter season.