This family (vanda orchids) brings together about sixty species of orchids, mainly epiphytes originating from Asia, Sri Lanka, New Guinea and Australia. Epiphytic plants are in fact species capable of developing on the bark of other plants. The plant is characterized by long bright green leaves, coriaceous, which start directly from the ground, at the base of the leaves grows a long stem on which numerous flowers bloom, usually large, very fragrant and conspicuously colored, from yellow to dark purple. The flowers last a long time and guarantee a fascinating spectacle for many weeks. The roots of these plants appear rather large and fleshy. In rare cases they are branched and grow freely in the air. This feature allows them to acquire all the moisture they need to grow and develop at their best. They are suitable for growing in baskets although they undoubtedly prefer natural environments and grow optimally outside the pot.
These orchids prefer very bright positions, in the cooler months they also enjoy a few hours of direct sun every day, to favor flowering; when the flowers begin to bloom and the climate warms up, it is advisable to keep the vandas in a shady but bright place, to avoid unsightly burns of the leaves. These orchids fear the cold very much, so they should be kept indoors, away from direct sources of heat, or in a temperate greenhouse, keeping them at an ideal temperature of 20-25 ° C. In summer it is advisable to place them outside, as they love the climate warm and well-ventilated places.
These are plants that require a lot of environmental humidity, which must be guaranteed with periodic steaming of distilled water and keeping the pots in trays filled with gravel or expanded clay, always damp. The absence of humidity could cause the death of the plant in the most serious cases as the ideal climatic conditions for the growth of our orchid are not guaranteed. Water every 2-3 days, avoiding to soak the growing substrate and letting the excess water flow freely. Provide specific fertilizer for orchids every 10-15 days dissolved with the water of the waterings.
Most Vanda Orchids are epiphytes and therefore need an incoherent substrate, which best simulates the cortices on which they grow in nature; generally for the cultivation of these orchids a mixture of sphagnum and osmunda fiber is used in equal parts, to which is added piece bark and charcoal, or inert materials such as polystyrene, if desired it is possible to place the plants in hanging baskets, even completely without substrate.
During the autumn season, many species of vanda orchids produce lateral shoots, which in spring can be detached from the mother plant and repotted in individual containers.
Vanda Orchids - Vanda: Pests and diseases
If well cultivated these orchids do not suffer from the attacks of parasites and fungi, even though it may happen that incorrect watering facilitates the appearance of root rot. Pay attention to the administration of water to avoid stagnation.