Table of contents:
Orchid family. Homeland Asia, Australia, Malay Archipelago. The genus includes about 35 - 45 species of epiphytic or epilithic species of monopodial orchids.
- Vanda blue Vanda coerulea is a plant with an erect stem up to 1 m long and a lot of aerial roots. Leaves are bi-row, belt-shaped, about 20 cm long and about 2.5-3 cm wide. Flowers about 10 cm in diameter are collected in erect multiflorous inflorescences. The color of the flowers is predominantly lavender, gradually changing to blue. The petals are broadly oval, narrowed towards the base, wide open, with a darker lip. Blooming in autumn.
- Vanda tricolor Vanda tricolor is a taller species with an erect stem, reaching 1.5 m or more. Two-row leaves are belt-shaped, up to 40 cm long, 4 cm wide. It also forms numerous aerial roots. Peduncle about 25-30 cm long, with a multi-flowered raceme. Flowers about 7 cm in diameter, fragrant. Petals are obovate, with a wavy edge, tapering towards the base. The petals are white or creamy, the lip is elongated, purple or deep pink. Blooming in autumn.
Wanda - care and maintenance
Wanda is thermophilic, the optimum temperature is about 22-28 ° C, while the daily temperature drops should be 8-11 ° C. And it is the nighttime temperature drop that promotes flowering. Winter minimum 16 ° C, but wandas grow quite normally in normal household conditions. Only Vanda blue requires cooler wintering, at temperatures in the range of 14 ° C.
Wanda needs very good lighting, but direct sunlight is permissible only in the evening or morning hours: before 11 and after 16 hours. During the day, the plant will burn in direct sun, but if there is shading in the form of blinds or light tulle, this is enough to protect the orchid. When placed in a room, it is practically impossible to do without an additional light source. Provided with high-quality versatile lighting with artificial light (white or daylight lamps), vandas grow and bloom better. In general, daylight hours should be at least 12 hours. With a lack of light, the castings take on a darker shade.
The only case when Wandas perfectly tolerate the direct sun in summer - after adaptation, accustoming to life on the street in the warm season. Fresh air and a gradual increase in sunlight hardens the orchid and promotes abundant flowering.
Watering and humidity
Watering during the growth of leaves by immersion after drying the substrate (it should dry out in 1-2 days) after another 2-3 days, if the orchid is grown without a substrate, water it once every 2-3 days during the growing season. Wanda is an orchid that comes from places with a pronounced seasonal climate, therefore, in winter there is a dormant period (reduced illumination for three months), watering is very moderate, watering about once every 5-7 days. When watering, as well as spraying, it is important that moisture is not poured into drops into the leaf axils - this causes damage to various fungal diseases.
Wanda loves air humidity of about 60-70% and higher, on dry hot days in the summer they spray the orchid, use filtered, boiled water. At the same time, you do not need to wet the roots - they will be saturated with moisture during watering. If the wanda is placed outdoors for the summer, usually there is enough natural moisture and spraying can be done without spraying.
In cold weather, when the temperature is from 18 ° C and below, it is better to replace irrigation by spraying the roots with warm water. Do not spray the leaves at all!
Ideally, vanda should be grown without any kind of substrate, with a bare root system. Its roots, strange as it may seem, are very adapted to dry air. In nature, after rain, moisture from them instantly dries up from the movement of the wind.
Vandas roots must constantly breathe and can be grown without a substrate by tying them to a block. Or, as a pot, they take a box of wooden slats, between which large gaps are left. Planting in a plastic pot by drilling holes in it from the side is not enough, you will have to drill not just holes, but very large holes! It should be noted that vanda roots grow through the holes and it is safer to transplant by simply breaking the box or pot into pieces. But the need for this arises every few years.
During the period of active growth, Vanda is fed with a special fertilizer for orchids, which is added to the water for irrigation. The optimal NPK ratio is in equal parts: 20-20-20 or 10-10-10. If the vanda grows in a bark substrate, top dressing should be carried out no more than once every 14 days. If vanda is grown with bare roots, fertilizer in a weaker concentration from the recommended (3-4 times less) is applied during watering about 2 times a week. Forum thread about growing Wanda.
By separating part of the stem with aerial roots - at least three healthy roots. The cut must be sprinkled with crushed charcoal or sulfur. Fasten the division into a block and grow as the mother plant. It is important that the separated part does not have contact with moist soil, they must be well blown with air.