Anoectochilus sikkimensis

An older name for a Himalayan jewel orchid

Anoectochilus sikkimensis is now included within A. brevilabris. The older name reflects its connection with Sikkim, within the accepted species range from Nepal through the eastern Himalaya to Yunnan in south-western China.

Natural plants occupy humid mountain forest, commonly in moss, leaf litter and rich surface humus beneath dense vegetation. Recurring rain and mist maintain the ground layer, while the creeping stems keep their patterned leaves close to deeply filtered light.

How to keep Anoectochilus sikkimensis healthy

Light

Keep Anoectochilus sikkimensis near an east or north window where the leaf can see open sky without receiving hot direct rays. A south or west room works if the plant is set back behind a sheer curtain. Insufficient light slows the creeping growth and reduces leaf size. Strong sun can leave permanent patches on the velvet blade. The metallic vein network of Anoectochilus sikkimensis is genetic, and more light will not create extra markings.

Watering

Water Anoectochilus sikkimensis when the top layer feels only just dry and the shallow root ball beneath is still cool and faintly moist. Saturate the mix evenly, then drain it at once. Long dryness crisps the velvet leaves and stops the stem tip; continually wet compost suffocates the roots. A small active plant in a ventilated cabinet may dry rapidly. A cool plant in low light or a pot with too much unused mix dries slowly.

Substrate and roots

Give Anoectochilus sikkimensis a moisture-holding but oxygen-rich mix of chopped sphagnum, fine bark, coir and perlite or pumice. This plant has thin terrestrial roots, so neither large epiphytic bark nor dense ordinary compost is suitable. Keep the root run shallow and the creeping stem at the surface. A close-fitting drainage pot reduces unused wet material. Flush it gently at intervals to remove soluble residue.

Temperature

Maintain Anoectochilus sikkimensis at about 20–28 °C and above 17 °C. The shallow root ball changes temperature quickly, so do not leave it on cold stone or beside a draughty pane. Chilled wet mix stops root activity, while radiator air crisps thin leaf edges. Shift the plant gradually if its room conditions change. Warmth around both roots and leaves supports steady low growth and cleaner new foliage.

Humidity and airflow

Anoectochilus sikkimensis responds well to 65–80% humidity. This is high enough to support thin leaves and shallow roots, but only when air continues to move softly. Still saturated air around a creeping stem can cause decline. Misting is not an adequate substitute and can leave droplets caught on the textured surface. Use a room humidifier or ventilated cabinet, and keep space between neighbouring plants.

Fertilising

Give Anoectochilus sikkimensis a complete low-dose fertiliser, normally one-eighth to one-quarter strength every four to six weeks during active root and leaf growth. Adjust for the actual light and temperature rather than a summer calendar. Continue only if the plant remains active. Its small root volume is very salt-sensitive, so water first, allow full drainage and use plain low-mineral water to rinse the substrate regularly.

Repotting

Repot Anoectochilus sikkimensis after fine roots fill the drainage area, the mix no longer drains cleanly or the creeping growth runs beyond the pot. Increase width by only 1–2 cm and keep the container shallow. Handle the root ball as one fragile pad, retaining sound substrate around it. Choose steady warmth and useful light for recovery. Lay the stem at the same level, and divide only where several roots are already present.

Support, pruning, handling and leaf care

Give Anoectochilus sikkimensis a continuous shallow rooting surface and avoid breaking the connection between an active tip and its established root mat. Keep the stem horizontal and give its tip clear substrate ahead. A rooted outer section may be divided during repotting. Never pull at a resistant leaf base. The soft metallic foliage is easily bruised, so dust it with a very fine brush and avoid routine handling.

Why this plant resembles Anoectochilus brevilabris

• The plant looks almost identical to Anoectochilus brevilabris: That is expected because A. sikkimensis is now treated as a synonym of A. brevilabris. Do not interpret the lack of a sharply different leaf shape or vein pattern as mislabelling or poor growth.
• Spreading heart-shaped leaves vary in their contrasting network: Plants circulating under the older name are not one uniform clone. Vein density and colour can differ while the leaf remains healthy, so use tissue firmness rather than an exact photograph as the diagnostic check.
• The surface runner remains partly above the mix: Keep the creeping stem close to, rather than buried beneath, an open moist surface. Roots can enter at the nodes while the stem stays exposed to air.
• A central flower spike appears and leaf growth stops at that tip: Terminal flowering ends the current shoot but not the whole plant. Retain its firm lower nodes, where the replacement growth can begin after flowering.
• The plant collapses although the enclosure is humid: Check the stem and roots for saturation rather than increasing humidity. Remove soft material, improve air exchange and reset sound growth in damp but porous medium.

Pet Safety

Specific pet-safety information is not available for Anoectochilus sikkimensis. Do not allow cats or dogs to chew it, and monitor any animal that has swallowed the foliage. Contact a veterinarian if more than a small amount was eaten or if vomiting, diarrhoea, drooling, lethargy or other unusual behaviour follows.

From Sikkim to a short-lipped name

Anoectochilus sikkimensis was named for Sikkim in the eastern Himalaya, using the geographical ending -ensis. That older name is still encountered in cultivation.

Orchid checklists now place the plant under Anoectochilus brevilabris. The epithet brevilabris means short-lipped and refers to the flower’s labellum. The genus name also refers to the lip, describing it as open.