The Dossinia marmorata is a true jewel orchid that you choose primarily for its foliage. Instead of large flowers, this species impresses with velvety leaves and a striking network of golden veins. It is a compact, terrestrial orchid that is most comfortable in a stable, moist microclimate such as a terrarium or an enclosed nursery.
Origin
Dossinia marmorata is endemic to Borneo, where it grows on the sheltered forest floor in the warm-humid rainforest. In nature, the plant is constantly in filtered light, with an airy layer of humus-rich organic matter on top of the soil, where the roots never completely dry out.
Characteristics
This species forms a low rosette with firm, velvety leaves that can appear copper to olive green, depending on light and location. The veins delineate brightly in a gold-like pattern that becomes increasingly contrasting under stable conditions. In our plants, leaf length currently averages about 3 to 5 cm measured from the core to the leaf tip. This is because they are still in a relatively young stage. As the plant matures and stands consistently for long periods, leaves tend to become larger and fuller in pattern. Minor differences in leaf color and pattern are normal and are part of the natural character of jewel orchids.
Care
Light
This Dossinia likes soft, indirect light. A spot with similar light to "shade in the greenhouse" is ideal. Too much light produces lighter leaves faster and can dull the velvety texture, while too little light noticeably slows growth.
Temperature
A stable, warm temperature works best, roughly between 20 and 27°C. Avoid cold drafts and prolonged lower temperatures, as this can stunt growth and increase the likelihood of root problems.
Substrate
Choose an aerated, organic and fine substrate that retains moisture without staying wet. A mix with, for example, fine bar material and high-quality sphagnum, possibly supplemented with fibrous organic components, suits the natural growth type well. It is important that oxygen can always reach the roots.
Humidity
Higher humidity is clearly in favor, preferably 60 to 80 percent. In a terrarium or enclosed container, the leaves remain more beautiful, growth is more even and the plant recovers faster from displacement.
Watering
Keep the substrate slightly moist, but avoid keeping the plant wet for long periods of time. Preferably let the top layer dry out slightly for a short time and then give a small amount of water again. Preferably use demineralized water or other soft water, as jewel orchids can be sensitive to salt build-up.
Feeding
Feed sparingly during the growing season. A low dose of orchid nutrition usually works best, as too much fertilization can stress the roots and make the foliage less attractive.
Repot
Prefer not to repot too often. As soon as the substrate visibly sags, begins to smell sour or remains too wet for long periods of time, it is time to change it. Work slowly, as the roots are relatively fine and like stability.
Flowering
Flowering is usually modest and often comes on a somewhat longer flower stem with small, light-colored flowers. Many enthusiasts choose to remove the flowering stem when the plant is still young, so that the energy goes mainly to roots and leaf growth. When the plant is mature and stable, you can actually let the blooms come as a nice extra.
