Cyrtosperma johnstonii 'Spiny Taro'

Native to the Solomon Islands, this spectacular tropical aroid is known for its enormous arrow shaped leaves, beautifully mottled petioles, and unusual spines arranged in comb shaped rows along the stems. Young plants often display striking pink or reddish coloring along their veins, which may become less prominent as the leaves mature. Under ideal tropical conditions, this moisture loving species can form an impressive clump approaching 10 feet tall. Interestingly, it is primarily known through cultivation, and botanists have found it difficult to confidently document specimens growing in the wild.

🌞 Light

Provide bright indirect light or gentle morning sun. Protect the leaves from intense afternoon sun, which may cause scorching. Adequate light supports strong growth and helps young leaves retain their attractive pink and reddish coloring.

💧 Watering

Keep the soil consistently moist to wet. This tropical bog plant should never be allowed to dry out completely. Water thoroughly whenever the surface begins to lose moisture.

🕳️ Soil

Use a rich, moisture retaining soil that also allows airflow around the roots. A mixture of quality potting media, coco coir, perlite, and fine orchid bark works well. Unlike many aroids, this species prefers consistently damp conditions.

🧪 Fertilizing

Feed monthly during the growing season with a balanced liquid fertilizer at half strength. Reduce feeding during cooler months when growth slows.

🪴 Repotting

Repot when the roots fill the container or the plant becomes unstable. Choose a sturdy pot with enough room for its large leaves and spreading growth. Handle carefully because mature petioles develop sharp spines.