Dischidia imbricata

A shingling epiphyte from Southeast Asia

Dischidia imbricata is native from mainland Southeast Asia into western Malesia, including Myanmar, Thailand, Vietnam, the Malay Peninsula, Sumatra, Java and Borneo. Carl Ludwig Blume first described it in 1827, and the current name followed in 1840.

This wet-forest epiphyte spreads across trunks and branches, pressing its overlapping leaves closely against the bark. Roots form along the stems beneath the leaves, using moss and trapped organic matter on the tree surface. Rain runs across the plant, humid air surrounds the close-growing shoots and the forest canopy scatters the light above. Its shingling growth is closely linked to life on living trees.

Helping Dischidia imbricata form its shingled mature growth

Light

Place Dischidia imbricata in strong filtered daylight close to an east-facing window or behind a sheer curtain at a brighter exposure. Mild early sun can be introduced gradually; hot midday rays can scorch leaves pressed flat to a warm support. Low light produces long gaps between leaves and loose growth that fails to hug the surface. Aim for a position where the plant casts a soft but definite shadow for much of the day, and light the face of its board or pole evenly.

Watering

Check both the rooting pocket and the material beneath the shingled stems. Water thoroughly when the upper medium is almost dry but the protected root zone still feels faintly moist. Soak or flush a mounted plant until the fibres are evenly wet, then let it drain and regain air. Fine epiphytic roots dislike complete, prolonged dryness, yet constant saturation under overlapping leaves can cause decline. Strong light, heat, airflow and a small mount speed drying; cooler air, dense moss and a mature layer of shielded roots slow it.

Substrate and roots

This species makes fine clinging roots along stems and beneath flattened leaves, so it needs a rough vertical surface plus a thin, airy moisture buffer. Mount it on cork or bark with a modest layer of long-fibre sphagnum or coco fibre, or use a shallow pot filled with fine orchid bark, coco chips and perlite. Do not bury the stems in dense compost. Compaction and stale wet moss remove oxygen from the concealed roots. Low-mineral water and occasional flushing limit salts in the small root zone.

Temperature

Maintain 20–28 °C and avoid prolonged conditions below 16 °C. Chilled wet moss is especially hazardous because the roots sit close to the exposed surface. Keep the mount off cold window glass and away from winter draughts or air-conditioning. Direct radiator air can dry the margins and hidden root strips before the central pocket appears dry. Stable warmth encourages new stems to attach.

Humidity and airflow

Moderately high humidity of about 55–75% meaningfully supports aerial rooting and close shingling. It must be paired with gentle, continuous airflow because moisture can linger beneath the overlapping leaves. An open cabinet or warm room with circulation works better than a sealed terrarium. Misting alone cannot soak the protected roots reliably; use a full watering and allow the plant to dry back to lightly moist.

Fertilising

Apply a complete fertiliser at one-quarter strength about monthly during active stem and root growth. Mounted plants with little substrate can receive a very dilute feed through a thorough wetting, followed periodically by plain low-mineral water. Continue lightly whenever warmth and usable light keep new leaves forming, including winter. Reduce or stop if growth pauses and the mount remains moist longer. Strong fertiliser quickly concentrates in moss and can burn the fine roots.

Repotting or remounting

Act when the rooting layer decomposes, stays wet for too long, develops heavy mineral crust or no longer holds enough moisture for the enlarged plant. A potted specimen may also need attention when roots fill the small container. Preserve attached sections and replace degraded material in stages; mature stems grip their support and resent being peeled away. Increase a pot by only 2–3 cm, or fasten the existing board to a larger backing so established roots remain undisturbed.

Support, guidance and leaf care

A vertical cork slab, bark board or rough pole is central to the mature form. Guide soft new stems flat against it with loose clips until roots attach; growth hanging freely makes more open, ordinary leaves and loses the tight shingle effect. Do not pull off leaves to inspect roots. Remove only fully dry stems, and trim wandering tips above a node if they cannot be redirected. Rinse dust gently and let water drain from behind the leaves with good airflow; wiping can dislodge them.

When the shingles lift or soften

• Leaves press flat and overlap against a surface: That shingling habit is normal for Dischidia imbricata. It develops best against bark, cork or another breathable vertical support and should not be prised away merely to inspect it.
• New leaves stop lying flat: A missing climbing surface, a dry root zone or weak contact with the support may be responsible. Give the stem something textured to climb and check the growing medium before adding water.
• Hidden leaves turn yellow, translucent or mushy: Water may be lingering behind the shingled growth or around air-starved roots. Improve drainage and airflow, let the plant approach dryness between waterings and remove soft sections before decay spreads; our epiphyte guide explains why airy roots matter.
• Cottony deposits appear under overlapping leaves: Mealybugs exploit the same sheltered spaces as the plant. Isolate it and inspect beneath every accessible shingle, repeating treatment because a single wipe will miss insects and eggs.

Pet safety for Dischidia imbricata

The effects of Dischidia imbricata on cats and dogs are unknown. Damaged stems release white latex, so prevent chewing and rinse sap promptly from skin or eyes with water. Contact a veterinarian if ingestion or sap exposure causes symptoms.

Origins of the botanical name

Robert Brown established Dischidia in Prodromus Florae Novae Hollandiae in 1810. The name joins Greek words for “twice” and “split,” referring to the divided lobes of the floral corona.

Carl Ludwig Blume first described the species as Conchophyllum imbricatum in Bijdragen tot de Flora van Nederlandsch Indië in 1827. Ernst Gottlieb von Steudel moved it to Dischidia in the second edition of Nomenclator Botanicus in 1840. The epithet imbricata means overlapping like roof tiles.