Light
Bright indirect • approx. 10,000–20,000 lux






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Dieffenbachia 'Tropic Marianne' carries broad leaves with pale yellow to ivory centres framed by deep green margins, creating a stable, high-contrast pattern on a single upright cane. Mature plants usually reach about 60–100 cm indoors, with leaves up to roughly 50 cm long adding real volume without taking much floor space.
It performs best in bright, indirect light, though moderate shade is acceptable, and watering should wait until the top 15–20% of the substrate has dried slightly. Warm conditions around 18–24 °C, humidity above 50%, and a breathable mix based on coco coir, compost, and perlite suit it well.
Source notes describe its variegation as genetically fixed rather than something driven by light intensity, so care should focus on plant health, not colour tricks.
Quick Care Guide
Light
Bright indirect • approx. 10,000–20,000 lux
Watering
Water when ~30–50% dry
Substrate
Aerated • Moisture-buffered • Balanced organic + mineral • Medium
Temperature
Ideal: 18–27 °C • Avoid below: 15 °C
Humidity
Moist 50–60 %
Growth habit
upright subshrub
Support
not needed
Growth speed
Average
Max size indoors
Max. height: 120 cm • Max. spread: 70 cm
Toxicity & safety
Toxic
Origin & habitat
Cultivar of Dieffenbachia seguine
These care values are practical reference points for indoor growing. Use them as a starting point, then adjust for your room, pot size, substrate, temperature and how quickly the plant dries.
For more context, read the full product description or visit our Plant Care Guides.
Move outside once nights stay above
16°C
Bring under cover below
14°C
Best outdoors in
Warm summer patio, Sheltered urban spot