Orchid Potting Mix · Choice of Grade

Which structure suits your orchids?

Choose carefully, repot gently

The original bag shown is 5-litre MK. Match the grade to the roots and growing conditions; both pack sizes are available in fine, medium and coarse.

Root space with air

See the texture up close

The original close-up shows the medium grade with a scale. Spaces remain between bark pieces for roots; distribute the mix loosely when filling.

Repotting: the complete sequence

Give orchids time to settle

A bright position and regular root checks make care manageable. Recovery matters after repotting; new flowers follow the plant’s own rhythm.

Eight illustrated steps for rooted, epiphytic potted orchids. Terrestrial orchids and specialist growing methods require their own species-specific instructions.

1. 1

   Check timing and root condition

   

   Repot when the mix has broken down, stays wet too long or leaves healthy roots no room. New root tips are a useful sign for establishment. Aerial roots outside the pot alone do not mean repotting is necessary.

2. 2

   Choose a suitable pot

   

   Select a clean container with open drainage holes that just accommodates the roots. A much larger pot holds unnecessary wet medium. A clear pot makes Phalaenopsis root checks easier.

3. 3

   Prepare medium and tools

   

   Have the selected grade, clean scissors and a work surface ready. Moisten dry bark mix evenly before filling. Clear drainage holes are needed; this sequence does not add a separate gravel or clay-pebble layer.

4. 4

   Gently remove the old mix

   

   Loosen the pot and support the plant around its roots. Ease decomposed bark out of the spaces; do not tear off firmly attached pieces. If necessary, cut the old plastic pot rather than break healthy roots.

5. 5

   Remove damaged roots

   

   Use clean tools to remove soft, rotten or hollow dead roots. Keep firm roots, including pale or silvery ones. Do not cut by colour alone, and protect new root tips.

6. 6

   Hold the plant at the right level

   

   Keep the leaf bases and crown of Phalaenopsis above the medium. On orchids with rhizomes and pseudobulbs, leave these exposed and allow room for the next growth. Do not force outward-growing aerial roots into the pot.

7. 7

   Fill loosely and stabilise

   

   Work small amounts of fresh mix between the roots. Tap the pot gently to fill large spaces without packing tightly. The plant should stand securely; support it carefully if needed until new roots anchor it.

8. 8

   Monitor moisture and recovery

   

   Keep in bright light protected from strong direct sun. Time the first watering to root injuries, initial medium moisture and the species’ needs. Let subsequent watering drain fully; remove water from the outer pot and leaf axils. Resume feeding only when appropriate to growth.

Care after repotting

Bark and coir can provide an airy component in a suitable vanilla mix. Assess moisture retention, grade and roots together; pure coarse bark is not a universal recommendation. Add climbing support.

Vanilla Fertiliser

Orchid Complex AF: ready-to-use nutrient solution as needed

Orchid Repotting Set MK

Match species and growing method

The grades are not a universal recommendation for every orchid. Terrestrial orchids, bare-root Vanda and young plants with special requirements need individual assessment. Changing the mix does not automatically correct disease or unsuitable growing conditions.

Questions about the orchid mix

Understand your orchids

Flowering, root growth and growing position belong together. The group profile helps you identify your orchid’s needs; suitable fertiliser supports care during active growth.

View the orchid profile