About trees
Alocasia macrorrhizos 'Lutea' is a large Alocasia whose trade name refers to the pale yellow petioles and veins contrasting with the green leaf blades. Large arrowhead-shaped leaves rise on thick petioles and form a tall clump from the above-ground stem. At maturity it creates a tropical structural presence, making it more suitable for a greenhouse or spacious garden than a small-plant shelf. The species A. macrorrhizos is taxonomically recognized, but Lutea should still be used as a color-form indicator rather than proof of lineage. The yellow characteristic should be distributed consistently along the petioles and veins, not appear as overall pale yellowing caused by damaged roots.
Provide bright light filtered from intense afternoon sun, leaving enough room around the canopy for new leaves to unfurl without hitting walls. Use a heavy pot or deep bed with good drainage. Water more while temperatures are warm and leaves are expanding, but wait until the soil surface has dried down before watering again. Gentle air movement helps strengthen the petioles without tearing the leaves. Maintain humidity and wipe the large leaves to keep their surfaces open to light. Apply diluted balanced fertilizer during the growing season. If temperatures fall and growth slows, reduce watering immediately. Inspect the base and roots when several leaves turn yellow at once, because this differs from the Lutea color that appears consistently along the petioles and veins.
