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Plant care

Teysmann's Medinilla care

Medinilla teysmannii

Also called Teysmann's Medinilla.

RHS H1bUSDA 11–12Mildly toxic to petsIndoor 40–90 cm tall

Watering rhythm

5-7days

Every 5–7 days in growth; every 10–14 days in the winter rest period

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Light

Bright indirect light (just back from a sunny window)

Soil

Coarse, free-draining epiphytic mix

Humidity

60–80%

Temp

17–25°C

Pet safety

Mildly toxic to pets

Mature size

40–90 cm tall

Care at a glance

Light

Teysmann's Medinilla is what florists mean by "bright spot, no direct sun" — close enough to a south or east window to feel the brightness, with a sheer curtain or a few feet of distance keeping the sun off the leaves. In its natural habitat, it grows under the forest canopy, receiving bright, filtered light. Indoors, position near an east- or west-facing window, or back from a south-facing window with a sheer curtain. Direct midday sun scorches the glossy leaves. Insufficient light prevents flowering. A phone lux-meter at the leaf surface should read 1,500-3,000 lux at noon.

Watering

Water teysmann's medinilla every 5–7 days in growth; every 10–14 days in the winter rest period. The actual day count varies with pot size, light, and season — the finger test (or lifting the pot to feel its weight) is more reliable than a fixed calendar. Empty any drainage saucer afterwards so the pot isn't sitting in water. Water thoroughly then allow the top third of the compost to dry before the next watering — roots need air and must not sit in constant moisture. Use an epiphyte or orchid-type mix that dries quickly between waterings. A cooler, drier rest period from autumn through late winter encourages spring flowering.

Soil and pot

Teysmann's Medinilla grows best in 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. A pot with a working drainage hole is non-negotiable for this species — even free-draining mix will turn soggy in a closed planter. If you love the look of a decorative pot without a hole, use it as a cachepot around an inner nursery pot you can lift out to water.

Humidity and temperature

Teysmann's Medinilla sits happiest at around 60–80% humidity and 17–25°C (63–77°F). High humidity, ideally 60% or above, is essential for healthy growth. Group plants together, use pebble trays with water, or run a humidifier nearby. Misting the foliage is acceptable but ensure good air circulation to prevent fungal issues. If you keep the room above 17–25°C year-round and avoid placing the plant near a cold draught, a hot radiator, or an air-conditioning vent, you have already handled the two biggest indoor stressors.

Fertilising

Feed teysmann's medinilla sparingly. Feed every 2–3 weeks during the growing season (spring and summer) with a diluted, balanced liquid fertiliser or a low-nitrogen orchid feed. Reduce to monthly in early autumn and withhold entirely through the winter rest period. Skip fertiliser entirely on a stressed, recently-repotted, or actively wilting plant — fertiliser salts make damage worse, not better. Wait for a round of healthy new growth before resuming a feeding rhythm.

Common problems

Below are the issues we see most often on teysmann's medinilla in the Growli community. Each is annotated with the most common cause so you know where to start.

  • Failure to flower — Requires a cool, dry rest period of 6–8 weeks in autumn/winter (temperature around 15–17°C) to trigger bud set. Keeping plants too warm and wet year-round prevents blooming.
  • 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.
  • Mealybugs — White, cottony clusters appear in leaf axils and on stems. Treat with a cotton swab dipped in 70% isopropyl alcohol for small infestations, or apply a systemic insecticide for severe cases. Inspect regularly.

Propagation

Stem cuttings with 2–3 nodes taken in spring, treated with rooting hormone and placed in a warm, humid propagator in coarse bark or perlite. Rooting is slow; maintain 24–26°C and high humidity. Air layering can also be used for established woody stems. Propagation is the cheapest, most satisfying way to expand a collection — and it doubles as insurance against losing a mature plant to an accident. Take a backup cutting once the parent is established and healthy.

Toxicity to pets

Teysmann's Medinilla is mildly toxic to pets. Medinilla is not individually listed by the ASPCA. The family Melastomataceae has no well-documented mass-toxic compounds, and a related genus (Bertolonia) is listed as ASPCA non-toxic. However, since M. teysmannii is not specifically evaluated and ingestion data is lacking, a precautionary mildly-toxic classification is appropriate. Consult a vet if ingestion occurs. If you keep cats, dogs, or curious children in the house, weigh placement carefully — a high shelf or a hanging planter is enough for casual safety. For severe ingestion incidents, call your local vet and the ASPCA Animal Poison Control Center (in the US, 888-426-4435).

Pet-safety status is sourced from the ASPCA Toxic and Non-Toxic Plant List, which catalogues the most-asked-about plants for cats, dogs, and horses.

Teysmann's Medinilla care — frequently asked questions

What is Teysmann's Medinilla?

Teysmann's Medinilla (Medinilla teysmannii) is a tropical houseplant with a epiphytic to lithophytic shrub with woody stems; upright to slightly arching growth habit, reaching 40–90 cm tall; 40–70 cm spread at maturity. 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.

How much light does teysmann's medinilla need?

Teysmann's Medinilla grows best in bright indirect light (just back from a sunny window). In its natural habitat, it grows under the forest canopy, receiving bright, filtered light. Indoors, position near an east- or west-facing window, or back from a south-facing window with a sheer curtain. Direct midday sun scorches the glossy leaves. Insufficient light prevents flowering.

How often should I water teysmann's medinilla?

Water teysmann's medinilla every 5–7 days in growth; every 10–14 days in the winter rest period. Water thoroughly then allow the top third of the compost to dry before the next watering — roots need air and must not sit in constant moisture. Use an epiphyte or orchid-type mix that dries quickly between waterings. A cooler, drier rest period from autumn through late winter encourages spring flowering. The finger-test (or lifting the pot to feel its weight) beats a fixed weekly calendar because pot size, light, and season all change how fast the soil dries.

Is teysmann's medinilla toxic to cats and dogs?

Teysmann's Medinilla is mildly toxic to pets. Medinilla is not individually listed by the ASPCA. The family Melastomataceae has no well-documented mass-toxic compounds, and a related genus (Bertolonia) is listed as ASPCA non-toxic. However, since M. teysmannii is not specifically evaluated and ingestion data is lacking, a precautionary mildly-toxic classification is appropriate. Consult a vet if ingestion occurs.

What USDA hardiness zone does teysmann's medinilla grow in?

Teysmann's Medinilla is rated for USDA zone 11–12 and RHS hardiness H1b. Outside that range, grow it as a container plant that overwinters indoors before the first hard frost.

Teysmann's Medinilla deep-dive guides

Every aspect of teysmann's medinilla care, each with its own calibrated guide:

Featured in these plant shortlists

Teysmann's Medinilla qualifies for 3 curated Growli shortlists — each one filtered objectively from our structured plant-care library, so the selection is consistent and checkable:

Related guides

Teysmann's Medinilla is also commonly called Teysmann's Medinilla.