General information
Aerangis is a genus of approximately sixty species of orchids, mostly native to Africa but also widespread in Asia. They are generally epiphytic. Aerangis have fleshy, grayish-green stems bearing long, alternate, thick, dark green leaves, usually with numerous silvery spots, with a slightly prostrate habit. In spring or autumn, they produce a long inflorescence bearing numerous rounded, scented flowers, white, cream, or pale pink, which grow on a long spur. The plants' compact size makes them suitable for growing on bark.
Exposure
Aerangis prefer bright locations, away from direct sunlight, especially on hot days, when direct exposure can quickly cause leaf burn. They should be placed in locations with an average temperature of around 15-18°C, although they can tolerate temperatures slightly below 10°C in winter and above 30°C in summer. For best growth, they require good ventilation.
When outside temperatures are very high or very low, it is a good idea to keep plants indoors to prevent the sudden temperature changes from causing them to deteriorate rapidly.
Watering
From March to November, water regularly, keeping the substrate slightly moist but not soaked, as orchids cannot tolerate waterlogging. From December to February, reduce watering slightly until spring buds appear. Mist the plant frequently, preferably using demineralized water. Every 20-25 days, add a small dose of specific orchid fertilizer to the watering solution.
When the plant ends its growing season, watering should be reduced for a period of about two months.
Substrate
Aerangis plants are naturally epiphytic, meaning they grow on tree trunks. To replicate these natural conditions indoors, a substrate made of finely chopped bark, pieces of sponge or polystyrene, and sphagnum moss is used. The plants should be repotted quite frequently, at least every 2-3 years, as they tend to produce new stems and roots, eventually filling the available space. The substrate tends to degrade over time, no longer providing adequate support.
