Gastrochilus japonicus

Gastrochilus japonicus also known as the 'Japanese Jewel Orchid' or ‘Yellow Pine Orchid', is a species of orchid native to East Asia, specifically in Japan, Korea, and China. In our experience, it can be grown on the Sunshine Coast without too much difficulty.

Ideal growing conditions

This orchid is commonly found growing in damp, shady forests, near streams and rivers, and is known for its light citrus fragrance and delicate beauty.

Gastrochilus japonicus is a relatively easy orchid to grow, provided that its growing requirements are met.

This species is an epiphyte, meaning it grows on other plants but does not take nutrients from them. Instead, it derives nutrients from the air, water, and organic matter in its environment. The growing media should be well-draining, providing support and moisture retention for the roots.

An alternative to growing Gastrochilus japonicus in a pot is to mount it, which replicates its natural habitat. The orchid can be attached to a piece of wood or cork, using sphagnum moss or wire ties. It is important to keep the growing media moist and to provide bright, indirect light for optimal growth.

Light: This orchid prefers bright, indirect light. Avoid exposing it to direct sun, which can cause leaf burn.

Temperature: Gastrochilus japonicus prefers warm temperatures, between 15-29°C. This species is not frost-tolerant, and it is important to protect it from cold temperatures.

Humidity: This orchid requires high humidity levels, between 50-80%. If the air in your home is dry, you can increase humidity levels by placing the pot on a tray filled with pebbles and water, or by using a humidifier.

Water: Regular watering is necessary for this species, but it is important to allow the growing media to partially dry between waterings. Overwatering can lead to root rot and other problems.

Fertiliser: This orchid should be fertilised monthly during the growing season, from spring to fall. Use a balanced fertiliser, and follow the instructions carefully.

Repotting: Gastrochilus japonicus should be repotted or remounted every 2-3 years, or when necessary. This will help to promote healthy growth and prevent the growing media from becoming compacted.

We grow this orchid at our home on the Sunshine Coast on a pine slab (with sphagnum moss) that receives direct morning sun and filtered light (25% shade) for the rest of the day. During the summer it is watered every day (sometimes twice on the hot days with low humidity). During the dormant period (May - Aug) it is kept slightly drier.

Written by Dean & Rosanna