Light
Bright indirect • approx. 10,000–20,000 lux
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Araceae
Amorphophallus atroviridis
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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.
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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.
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Amorphophallus atroviridis
Quick Care Guide
Watering
Water when ~40–60% dry
Substrate
Aerated • Moisture-buffered • Balanced organic + mineral • Medium
Temperature
Ideal: 20–28 °C • Avoid below: 10 °C
Humidity
Moist 50–60 %
Growth habit
Upright tuberous herbaceous perennial.
Support
not needed
Growth speed
Slow
Max size indoors
Max. height: 70 cm • Max. spread: 100 cm
Toxicity & safety
Toxic
Origin & habitat
Native to Central Thailand
Outdoor growing
Indoor only
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.
Amorphophallus atroviridis
Amorphophallus atroviridis grows from a resting tuber into one dark, detailed seasonal leaf during its active phase. Native to central Thailand, it moves between a leafy growing period and a quieter dormant period below the substrate.
When active, the plant can produce a dark reddish-brown petiole with spotted markings and deep green to almost blackish leaflet tones. During rest, the below-ground tuber needs much less moisture, so the care changes clearly between active growth and dormancy.
Tuber, petiole and seasonal leaf
- Tuberous growth: The plant grows from an underground tuber rather than from a permanent leafy stem.
- Seasonal leaf: One main leaf develops during active growth and can naturally yellow or collapse when dormancy begins.
- Dark petiole detail: The petiole can show reddish-brown colouring with spotted markings.
- Deep leaf colour: Leaflets can show dark emerald to blackish green tones with coloured margins and pale vein detail.
- Seasonal change: The leafed stage and dormant stage each need different watering.
- Careful watering needs: Watering must follow the tuber’s stage rather than a fixed all-year routine.
Growth cycle and limestone-boulder habitat
Amorphophallus atroviridis is a tuberous geophyte in Araceae. The species is native to central Thailand, where it has been recorded among limestone boulders in wet tropical conditions. That habitat points to moisture during growth, but also to air around the root zone rather than heavy, compacted soil.
In cultivation, the tuber is the plant’s stored energy source. During active growth, the plant needs warmth, light and careful moisture while the leaf is expanding. Once the leaf begins to yellow and the plant withdraws into the tuber, watering should be reduced strongly. A dormant tuber kept cold and wet is much more vulnerable than a leafy plant in active growth.
Active growth and dormancy care
- Light: Give the active leaf bright filtered light. Low light can leave the petiole weak and the leaf stretched.
- Water: Water carefully while the leaf is growing, then reduce watering when the leaf yellows and dormancy starts.
- Substrate: Use an airy, sharply drained mix that holds some moisture during growth but does not stay waterlogged around the tuber.
- Pot: Choose a pot deep enough for the elongate tuber and stable enough for the seasonal leaf.
- Temperature: Keep it warm during active growth. Cold wet substrate can damage the tuber quickly.
- Dormancy: A leafless period is normal. Check the tuber occasionally, but avoid treating dormancy like active growth.
Dormancy signals and tuber problems
- Leaf collapse: If it happens after a full active season, this may be normal dormancy rather than failure.
- Soft tuber: Softness usually points to rot from too much moisture, cold conditions or dense substrate.
- Weak petiole: Low light during active growth can produce a weaker, taller leaf.
- Rot during rest: Dormant tubers need far less water than leafy plants.
Tuber handling and safety
As an aroid, Amorphophallus atroviridis should be kept away from pets and small children. Damaged tissue and sap can irritate the mouth, throat and skin, so wear gloves when handling the tuber or cutting old growth.
Published name and native range
Amorphophallus atroviridis Hett. is an accepted Araceae species first published in Blumea in 1994. Its known native range is central Thailand, and its tuberous habit separates it clearly from evergreen climbing aroids in indoor care.
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 Amorphophallus atroviridis – dormancy, watering, and seasonal rhythm
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