Monstera deliciosa ‘Sierrana’

Background of the Sierrana name

Sierrana is the cultivated name for a form of Monstera deliciosa valued especially for its mature leaf shape. The historical botanical name Monstera deliciosa var. sierrana, published in 1965, is now included within M. deliciosa.

The species is native from southern Mexico to Guatemala, where it climbs through warm, wet tropical forest by means of aerial roots. Its shift from simple juvenile leaves to increasingly divided adult foliage is part of that climbing development, which is why young Sierrana plants can look much simpler than established examples.

Caring for young Sierrana

• Light: Give bright indirect light, approximately 10,000–20,000 lux. Stable light supports stronger climbing growth; acclimatise slowly before allowing mild direct sun.
• Water: Let roughly 50–70% of the medium dry between thorough waterings. Wet the full root ball, drain it and remember that a small ⌀ 6 cm pot can change moisture level quickly.
• Temperature and humidity: Keep it in the 18–27 °C range and away from conditions below 12 °C. Humidity around 50–60% is adequate when air moves freely around new leaves.
• Potting: Use a free-draining, bark-rich aroid substrate with medium-sized particles. Repot only one size at a time and retain the original planting depth.
• Feeding: Feed lightly but regularly while new leaves and roots are developing. Hold fertiliser after delivery, during cold conditions or whenever the plant has stopped growing.
• Support: Add a secure vertical support early and keep the extending stem close to it. Maturity and steady climbing growth guide the gradual development of larger, more divided leaves.
• Propagation: Take a cutting only when it includes a sound node. Aerial layering is another option on a longer vine, while a loose leaf without stem tissue will not form a replacement plant.

When Sierrana has problems

• Simple juvenile leaves: Heart-shaped leaves are normal at this stage. Maturity, strong roots, useful light and steady climbing support guide the later development of divisions and internal openings.
• New leaves losing size: Confirm that the vine is attached to a stable support, then check light, temperature and the root zone. Repeatedly smaller foliage usually reflects interrupted growth.
• Widespread yellowing in wet soil: Extend the interval between waterings and confirm that the pot drains. Inspect for soft roots or stem tissue if the mix remains wet unusually long.
• Dry tan or black patches: Tan areas on the exposed side suggest sun scorch, while sudden dark collapse can follow cold. Move to stable filtered light and warmth, then judge recovery from the next leaf.
• Torn new foliage: A leaf that caught on a sheath or nearby object will not repair. Give an unfurling blade clear space and keep moisture and airflow steady.
• Fine scarring or speckling: Look closely at new growth, leaf undersides and petiole joints for thrips, spider mites, mealybugs and scale. Isolate first, identify the pest and repeat the appropriate control.

Children, pets and plant sap

This plant contains insoluble calcium oxalate crystals and is unsafe to chew. Biting it can cause immediate mouth pain and irritation, swelling of the lips or tongue, drooling, vomiting and difficulty swallowing. Sap may also irritate skin and eyes.

Keep the plant away from children and pets, and wash hands and tools after cutting it. For human mouth exposure, remove plant pieces, rinse and spit with water, then contact a local poison centre. Rinse exposed skin or eyes with clean water for at least 15 minutes. Contact a veterinarian promptly after pet exposure, and seek urgent help for breathing or swallowing difficulty, severe swelling or collapse.

The name Sierrana

The word deliciosa is Latin for “delicious”, a reference to the species’ fully ripe fruit. Sierrana preserves a historical botanical variety name that is now included within Monstera deliciosa.