Repotting guide

When & how to repot Teysmann's Medinilla (Medinilla teysmannii)

Also called Teysmann's Medinilla.

More about teysmann's medinilla

About Teysmann's Medinilla

Medinilla teysmannii · also called Teysmann's Medinilla · tropical

Teysmann's Medinilla is a stunning epiphytic or lithophytic shrub from the Philippines, Sulawesi, and the Moluccas, found in mossy montane forests at 700–1,800 m. It produces ornamental pendulous flower clusters and glossy foliage. Like other Medinilla, it needs bright filtered light, high humidity, and excellent drainage to thrive.

Mature size: 40–90 cm tall; 40–70 cm spread

Watch for — Root rot: Dense, moisture-retentive compost causes the epiphytic roots to suffocate and rot. Switch to a coarse bark-based orchid mix and allow the compost to partially dry between waterings.

How to tell teysmann's medinilla needs repotting

Repotting on a calendar is less reliable than reading the plant. For teysmann's medinilla, watch for these signs:

Thick roots out of the drainage holes, or circling the surface and lifting the plant.
The pot dries out unusually fast and teysmann's medinilla wilts between waterings it used to shrug off.
The plant is visibly top-heavy and tips over easily.
Stalled growth and small new leaves over a full season — though with a big specimen, top-dressing is often the better first response before a full repot.

For the underlying biology of a pot-bound root system and why it stalls a plant, see our guide to spotting and fixing a root-bound plant.

How often to repot teysmann's medinilla

Every 2–3 years; top-dress in the in-between years. Teysmann's Medinilla's growth habit — epiphytic to lithophytic shrub with woody stems; upright to slightly arching — sets the pace. Teysmann's Medinilla is a stunning epiphytic or lithophytic shrub from the Philippines, Sulawesi, and the Moluccas, found in mossy montane forests at 700–1,800 m. It produces ornamental pendulous flower clusters and glossy foliage. Like other Medinilla, it needs bright filtered light, high humidity, and excellent drainage to thrive.

What size pot to step teysmann's medinilla up to

Move up exactly one pot size. A heavy teysmann's medinilla dropped into a vastly bigger pot sits in a reservoir of wet soil its roots cannot reach, which rots them and destabilises the plant. In the years between repots, lift off and replace the top 3–5 cm of soil (top-dressing) instead — it refreshes nutrients without the shock of a full repot.

Not sure of the exact diameter? Our pot size calculator takes the current pot and root spread and tells you the right next size — it deliberately recommends a single step up, never a big jump.

The best time of year to repot teysmann's medinilla

Early spring, just as new growth restarts, is the ideal window for teysmann's medinilla. The plant is moving into its strongest growth phase and re-roots into fresh soil quickly. Avoid repotting in winter dormancy or, for flowering plants, while it is in bud or bloom — recovery is slowest then and you risk dropping the flowers.

Step-by-step: repotting teysmann's medinilla

Consider top-dressing first. If teysmann's medinilla is not badly root-bound, scrape off and replace the top 3–5 cm of soil instead — far less shock for a big plant that hates moving.
Get help and one size up. For a full repot, choose a pot just one size larger. A heavy plant needs two people and a stable, free-draining pot.
Ease it out on its side. Lay the plant down, slide the pot off, and gently loosen the outer roots. Do not bare-root a mature specimen.
Repot at the same depth. Add fresh coarse, free-draining epiphytic mix beneath and around the rootball, keeping the original soil line. Firm it so the trunk is stable and upright.
Water and leave it put. Water thoroughly, then leave teysmann's medinilla in the same spot and light — moving and repotting at once is what makes it drop leaves.

Aftercare

Leave teysmann's medinilla in exactly the same spot and light it was in before — moving and repotting at the same time is what makes a big specimen drop leaves. Water it in well, then let the top of the soil dry before watering again so the larger volume of fresh soil does not stay sodden. Do not fertilise for about 4 weeks — fresh mix already carries nutrients and feeding freshly disturbed roots scorches them.

The right soil mix for teysmann's medinilla

Teysmann's Medinilla wants coarse, free-draining epiphytic mix. Use a bark-based orchid compost or a mix of coarse bark, perlite, and a small amount of coir (2:1:1). Standard potting compost retains too much moisture for these epiphytic roots. Slightly acidic pH (5.5–6.5). Excellent drainage is non-negotiable. Always use fresh mix when you repot — reusing old, broken-down soil reintroduces the compaction and poor drainage you are repotting to fix.

Repotting teysmann's medinilla — frequently asked questions

How often should you repot teysmann's medinilla?

Every 2–3 years; top-dress in the in-between years for teysmann's medinilla. Fully repot teysmann's medinilla only every 2–3 years; in the in-between years just top-dress the top 3–5 cm of soil. Step up one pot size in spring with coarse, free-draining epiphytic mix. It is heavy and hates being moved, and a vastly oversized pot holds water against the roots and rots them.

What size pot does teysmann's medinilla need?

When is the best time of year to repot teysmann's medinilla?

Should you top-dress or fully repot teysmann's medinilla?

For a big, heavy teysmann's medinilla, top-dressing — replacing the top 3–5 cm of soil — is the gentler option most years, with a full repot only every 2–3 years. A mature specimen sulks and drops leaves when fully repotted, so do it as rarely as the roots allow.

Should you fertilise teysmann's medinilla after repotting?

Not immediately. Wait about 4 weeks after repotting teysmann's medinilla. Fresh mix already contains nutrients, and feeding freshly cut or disturbed roots burns them. Resume your normal feeding routine once you see new growth.