Light
Bright indirect • approx. 10,000–20,000 lux
Buy 4 plants, get 1 free
Araceae
Alocasia 'Sumo'
- Curated selection:
Every plant is hand‑picked for health and visual appeal, so you receive a strong, well‑established plant.
- Representative photos:
Product images show a typical plant of this variety. Natural differences in leaf number, shape or variegation are normal, your plant will still match in type and quality.
- Size details:
Listed sizes refer to pot diameter (cm) and approximate overall height (cm) from the base of the pot to the tallest leaf or stem.
- “Get What You See” items:
If you are buying the exact plant shown in the photos, this is clearly stated in the size section.
- Individual photos:
One‑off photos are only provided when this is explicitly mentioned in the size section. - For special traits or small quirks, please check the full product description.
VAT included · plus
Your new plant has just travelled a long way and needs a calm start in its new home. For step-by-step unboxing and first-week care, check our after-delivery care guide. For deeper tips on how your plant settles in over the next weeks, read our houseplant acclimatization guide.
- Care basics , Main hub with links to all houseplant care guides.
- After delivery & first week , Unpacking, first placement, and early recovery.
- Light, How much light houseplants really need indoors.
- Watering , When to water and how to avoid root rot.
- Substrates & roots, Potting mixes and drainage for strong root systems.
- Humidity, When humidity matters and what actually helps.
- Fertilizing, Simple feeding routine without burning roots.
- Problems & pests, Yellow leaves, brown tips, bugs, and fixes that work.
- Semi-hydro, How to run low-maintenance mineral substrates.
Secure shipping, carefully packed orders with safe delivery across the EU, UK and Switzerland.
28-day plant guarantee, if a plant arrives damaged or fails soon after delivery, we help you make it right.
Free returns, simple, cost-free returns according to our policy.
For full details, please see:
Please head to our FAQ Page or Contact us.
Alocasia 'Sumo'
Quick Care Guide
Watering
Water when ~20–30% dry
Substrate
Aerated • Moisture-buffered • Balanced organic + mineral • Medium
Temperature
Ideal: 18–29 °C • Avoid below: 15 °C
Humidity
Humid 60–80 % +
Growth habit
Upright clumping herbaceous perennial.
Support
not needed
Growth speed
High
Max size indoors
Max. height: 180 cm • Max. spread: 150 cm
Toxicity & safety
Toxic
Origin & habitat
Horticultural Alocasia cultivar
Outdoor growing
Outside from 15 °C · sheltered spot
How to read these values
These care values are quick reference points for indoor growing. Use them as a guide, then adjust for pot size, substrate, temperature and how quickly the substrate dries.
For more detail, read the full product description or visit our Plant Care Guides.
- Light: level and approximate lux at leaf level.
- Watering: “% dry” shows how far the substrate should dry before watering again.
- Substrate: structure, drainage, moisture retention, base material and particle size.
- Temperature: “Ideal” shows the preferred range; “Avoid below” marks the cold-stress threshold.
- Humidity: target range; steady conditions usually matter more than exact numbers.
- Growth habit: how the plant grows, such as upright, climbing, trailing, clumping or rosette-forming.
- Support: whether a stake, pole or trellis is needed, optional or unnecessary.
- Growth speed: expected pace under suitable indoor conditions; use as a guide, not a promise.
- Max size indoors: realistic long-term indoor size under good conditions.
- Toxicity & safety: irritation, toxicity or physical hazards such as spines or bristles.
- Origin & habitat: native range, hybrid background or typical habitat where relevant.
- Outdoor growing: when a potted indoor plant can be placed outside and what outdoor protection it needs.
Alocasia 'Sumo'
Alocasia 'Sumo' is a large-growing hybrid with sagittate leaves, dark green to grey upper surfaces and purple-toned stems. As it sizes up, the plant forms an upright clump with substantial petioles and broad blades that need space around the pot.
This warm-growing Alocasia prefers bright filtered light, steady root moisture and a stable container. Larger leaves develop when the plant has enough warmth, root room and water during active growth. Cold wet substrate can quickly lead to yellowing or root damage.
Large leaves and purple-toned stems
- Leaf shape: Large sagittate leaves with a strong Alocasia outline.
- Leaf colour: Dark green to grey upper surface with a grey underside.
- Veins and stems: Purple-toned veins beneath the leaves and dark purple stems.
- Growth habit: Upright clumping hybrid from a rhizomatous base.
- Pot behaviour: Thick petioles and larger leaves need a stable pot as the plant matures.
- Scale: The clump becomes broader and heavier as the root system fills the pot.
How Alocasia 'Sumo' develops in a pot
Alocasia 'Sumo' builds mass through its base, roots and petioles. A small plant may look open at first, then becomes heavier and broader as the rhizome and root system develop. The pot should drain well but hold enough moisture for the larger leaves during warm active growth.
Broad blades lose moisture quickly in warm conditions, so repeated drought stress can leave the petioles limp. A weighty pot also reduces wobbling once the petioles thicken.
Water, light and pot stability for Alocasia 'Sumo'
- Light: Give strong filtered light. Direct hot sun can scorch the leaf surface, while low light can lead to stretched petioles.
- Water: Water thoroughly once the upper substrate begins to dry. Larger plants may dry faster when warm and actively growing.
- Substrate: Use a chunky aroid mix with bark, pumice, perlite or coco chips so the large root system gets both moisture and air.
- Temperature: Around 20–28°C keeps this hybrid in its active range. Cold, wet conditions can damage the rhizome and roots.
- Humidity: Moderate to higher humidity reduces creasing and stuck edges while broad new leaves open.
- Feeding: Feed lightly but regularly during active growth. Strong fertiliser can burn stressed roots.
- Potting: Repot gradually as the root system fills the container. Use a stable pot when the plant becomes top-heavy.
Common stress signs on Alocasia 'Sumo'
- Drooping petioles: A dry rootball, damaged roots or a recent move can cause temporary collapse.
- Yellow lower leaves: Check for overwatering, cold substrate or a potting mix that stays wet too long.
- Torn leaves: Broad blades can split from transport, handling or strong airflow while still soft.
- Root rot: Dense substrate and standing water are the main risks around the rhizome.
- Pests: Spider mites and thrips can mark new leaves, undersides and petiole bases.
Safety note for Alocasia 'Sumo'
Alocasia 'Sumo' contains insoluble calcium oxalate crystals. Keep it away from pets and small children, and avoid contact with the mouth or eyes after handling damaged tissue.
Hybrid parentage of Alocasia 'Sumo'
Alocasia 'Sumo' is a cultivated hybrid of Alocasia 'Portora' × Alocasia princeps. The genus name Alocasia dates to G. Don’s 1839 treatment and relates the group to Colocasia, a closely related aroid genus.
Plant names, growth habits, natural habitats and indoor care guidance are checked against trusted botanical, habitat and horticultural references before publication.View our plant care resources and references.
FAQs about Alocasia 'Sumo' – space, pot choice, and winter slowdown
Not sure which Alocasia to choose?
Recently viewed:
Sign up for Foliage Factory newsletter for early access to new arrivals and practical care tips that work in real homes.