Alocasia ‘Venom’

Ancestry of Alocasia ‘Venom’

The ‘Amazonica’ ancestry of Alocasia ‘Venom’ combines Alocasia sanderiana from damp lowland ravines on Mindanao with Alocasia longiloba from Southeast Asian forest floors and rocky ravines. Both parent species grow in warm, humid forest where the canopy filters the light.

Care for Alocasia ‘Venom’

• Growth rhythm: If the corm, roots and existing leaf remain firm during a pause, reduce watering and pause feeding; resume the normal routine as active leaf growth returns.
• Light: Give ‘Venom’ a bright position, shielded from harsh direct sun. Introduce stronger light gradually.
• Temperature: Keep active growth around 19–28 °C, away from cold glass and draughts. Move the plant away from colder areas when temperatures remain below 15 °C.
• Humidity: Aim for 60–80% humidity with gentle air movement around the foliage.
• Watering: During active growth, let the upper part of the mix dry a little while some moisture remains deeper around the roots. Water until excess runs from the drainage holes, let the pot drain and empty collected water.
• Potting mix: Use a fertile mix with good drainage that stays loose after watering.
• Feeding: Keep feeding modest during active growth with houseplant fertiliser, scaling it back when new growth slows. During active growth, feed at half strength every 2–4 weeks.
• Leaf care: Handle the leaf gently and keep the long tip clear of walls and busy walkways.
• Move to the next pot size when the root system fills the container and reaches the drainage openings. Move up one normal pot size when roots are circling or filling the container.

Troubleshooting Alocasia ‘Venom’

• Several leaves turn yellow and begin to droop while the pot stays wet: Wait before watering again and examine the roots. Soft, mushy or bad-smelling roots point to rot. Keep firm roots untouched and remove only sections that are clearly rotten, then repot in fresh, airy mix in a pot that matches the healthy root system.
• A new leaf opens scratched, distorted or dotted with black specks: Look inside the folded growth for thrips. Keep the plant away from others if they are present. Use a treatment labelled for thrips on indoor ornamental plants, and repeat it only as directed on the label.
• Tiny pale dots start spreading across the leaves: Turn the leaves over and look for spider mites or fine webbing. Separate the plant from nearby plants once mites are confirmed. Use a treatment labelled for spider mites on indoor ornamental plants, and repeat it only as directed on the label.

Alocasia ‘Venom’: toxic if chewed

• Pets: This Alocasia is toxic to cats and dogs. Keep the plant and any cut pieces where pets cannot chew them.
• Children and handling: Keep it out of reach of children. Sap from damaged tissue can irritate skin and eyes, so wash your hands after pruning and avoid touching your face.
• Why it irritates: Alocasia tissue contains insoluble calcium oxalate crystals. Chewing or contact with sensitive tissue can cause immediate local irritation.
• Possible symptoms: Mouth exposure can cause burning pain, drooling, swelling, nausea or vomiting, and difficulty swallowing.
• After exposure: For a pet, contact a veterinarian. For a person, remove any plant material from the mouth and rinse with water; seek medical or poison-control advice if symptoms are significant. Breathing difficulty or rapidly increasing swelling needs urgent medical attention.

How Venom got its name

Hybridizer Mason Lee chose Venom because the leaf shape reminded him of the Marvel character of the same name.

Mason Lee discovered ‘Venom’ in South Korea around 2019 as a mutation of Alocasia ‘Amazonica’; it entered wider commercial circulation around 2022.