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Alocasia Macrorrhiza

Alocasia macrorrhiza

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verifiedReviewed by the GreenScout Team

Alocasia Macrorrhiza is a large, vigorous tropical plant with enormous deep green arrow-shaped leaves that can reach 3 feet or more in length. It is best suited for spacious indoor environments or conservatories where its impressive size can be accommodated. This species requires warm, humid conditions and regular feeding to support its robust growth.

Common Problems

Select the problem your Alocasia Macrorrhiza is experiencing to get a treatment guide.

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Yellow Leaveschevron_right

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Brown Tipschevron_right

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Leggy Growthchevron_right

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Slow Growthchevron_right

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Root Rotchevron_right

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Dropping Leaveschevron_right

Care Guide

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Light

Bright, indirect light for optimal growth. Can tolerate medium light but becomes leggy. Keep away from direct afternoon sun.

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Water

Water thoroughly when top inch of soil is dry. Reduce watering in winter but never allow soil to completely dry out.

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Soil

Rich, chunky, well-draining mix with peat, perlite, and bark. Ensure pot has drainage holes to prevent waterlogging.

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Fertiliser

Feed every 2 weeks during growing season with balanced liquid fertilizer at half-strength. Reduce to monthly in winter.

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Temperature

Prefers warm conditions of 65–80°F (18–27°C). Sensitive to cold; maintain above 60°F (15°C).

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Humidity

Appreciates moderate to high humidity of 50–70%. Mist foliage or use a humidifier; regular misting prevents dust accumulation.

Toxicity

dangerousToxic to CatsdangerousToxic to DogsdangerousToxic to Children

Contains calcium oxalate crystals causing severe mouth and throat irritation, excessive drooling, and difficulty swallowing if ingested.

Common Diseases

filter_dramaRoot Rotchevron_right grainLeaf Spotchevron_right

Common Pests

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Seasonal Care

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Resume regular watering and feeding as growth picks up.

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Peak growing season. Water and feed regularly.

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Reduce watering as growth slows. Stop heavy feeding.

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Minimal watering and feeding. Protect from frost if needed.

Frequently Asked Questions

How big can Alocasia Macrorrhiza get indoors?

Given enough space, warmth, and feeding, indoor specimens can reach 4–6 feet tall with leaves over a foot long — far larger than most other Alocasias, so plan for room to grow.

Why is my Alocasia Macrorrhiza growing leggy with widely spaced leaves?

Leggy growth usually means insufficient light. Even this large species needs bright, indirect light to stay compact — move it closer to a bright window or supplement with a grow light.