Aerangis jacksonii is an orchid species originating from East Africa, where it grows as an epiphyte on trees in rainforests. Its distinctive star-shaped flowers are typically white and can be fragrant at night. The compact size of Aerangis jacksonii makes it well-suited for indoor cultivation.
Aerangis Jacksonii Care
Light
Aerangis jacksonii thrives in bright, indirect light, mimicking its natural habitat beneath the forest canopy. Direct sunlight can scorch its leaves. Insufficient light can hinder its ability to bloom effectively. Placing the orchid near an east or north-facing window, or providing filtered light from a south or west-facing window, offers suitable conditions.
Temperature and Humidity
This orchid prefers warm to intermediate temperatures, with daytime ranges between 70-80°F (21-27°C) and nighttime temperatures dropping to 60-65°F (16-18°C). High humidity is important for Aerangis jacksonii, maintained between 60-80%. To achieve this, growers use pebble trays, room humidifiers, or group plants together to create a more humid microclimate.
Watering
Watering should occur as the potting medium approaches dryness, but do not let the orchid dry out completely. Using rainwater or distilled water is recommended to prevent the buildup of mineral salts, which can harm the plant. The roots of Aerangis jacksonii should dry out quickly after watering to prevent root rot, a common issue for epiphytic orchids.
Potting Medium and Repotting
As an epiphytic orchid, Aerangis jacksonii requires a well-draining, airy substrate, such as a mix of fir bark, sphagnum moss, or it can be mounted on cork or tree fern. Mounting is beneficial as it exposes the roots to air, similar to their natural growth habit. This orchid prefers to be slightly underpotted, and repotting is needed every one to two years, or when the potting medium begins to decompose. When repotting, minimize disturbance to the root system to avoid stressing the plant.
Fertilizing
A balanced orchid fertilizer applied at a diluted strength, such as quarter strength, every two to four weeks during active growth is appropriate. A “weakly, weekly” approach, where a very dilute fertilizer solution is used with almost every watering, is also effective. During cooler months or periods of slower growth, reduce the frequency of fertilization. Proper nutrients contribute to stronger growth and more impressive blooms.
Air Circulation
Good air movement around both the roots and foliage is important for Aerangis jacksonii. This helps prevent fungal issues, particularly in high humidity environments, and promotes overall plant health. If the growing area has stagnant air, using a small fan can improve air circulation.
Encouraging Blooms
Encouraging Aerangis jacksonii to produce flowers involves providing consistent and appropriate environmental conditions. A slight drop in nighttime temperatures, about 10-15°F (6-8°C) below daytime temperatures, can help initiate flowering. Ensuring sufficient light levels, without exposing the plant to direct, scorching sun, is also a factor in bloom production. Consistent care, including proper watering and fertilization, supports the plant’s energy reserves for blooming. Mature plants are more likely to bloom, with flowering occurring in late winter to spring.
Common Problems and Solutions
Yellowing or Shriveled Leaves
Yellowing leaves can indicate overwatering, underwatering, or a nutrient deficiency. If leaves appear shriveled or wrinkled, it points to underwatering or insufficient humidity. Adjusting the watering schedule and increasing ambient humidity, through misting or humidifiers, can resolve these issues.
Lack of Blooms
A lack of blooms is attributed to insufficient light or inconsistent care, requiring an assessment of light exposure and adherence to a regular care routine. Ensuring consistent environmental conditions is key to encouraging flowering.
Pests
Pests like spider mites or mealybugs can infest the plant. Identifying these pests, which appear as small dots or cottony masses, is the first step. Treatment involves wiping them off with rubbing alcohol or applying an appropriate horticultural spray.
Root Rot
Root rot is a problem caused by overly wet conditions. To prevent this, ensure the potting medium dries adequately between waterings and provide good air circulation around the roots.