Giant Pastazanum Philodendron (Philodendron pastazanum)

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Sunlight Bright indirect light; avoid direct midday sun to prevent leaf scorching; tolerates low light with slowed growth

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Watering Water thoroughly when the top 2–3 cm of soil is dry; avoid waterlogging to prevent root rot

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Temperature Thrives in 18–27°C; protect from temperatures below 12°C to avoid leaf browning and tissue damage

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Leaf: Large heart-shaped glossy dark green leaves up to 1 m long with prominent raised venation
Stem: Thick, succulent stems with aerial roots for anchorage and moisture uptake
Inflorescence: Pale green spathe enclosing a spadix (rarely produced indoors)

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Watering

Keep soil evenly moist but not waterlogged

Fertilization

Diluted balanced liquid fertilizer every 2 weeks. Avoid fertilizing during winter dormancy to prevent nutrient buildup in soil

Banana peel compost tea：Compost banana peels for 2–3 weeks, steep in water for 24 hours, dilute 1:20 before applying to soil to avoid nutrient burn

Pruning

Remove yellow or damaged leaves at the base to improve airflow and plant appearance
Trim overgrown aerial roots if they become unruly; avoid cutting healthy aerial roots that support moisture uptake
Repot and trim circling roots in early spring to encourage healthy root growth and prevent root binding

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Warning: this plant may be toxic.

Pets & Humans

Pets: ASPCA: Toxic; ingestion leads to oral pain, drooling, and vomiting

Humans: Contains calcium oxalate crystals; ingestion causes oral irritation and temporary difficulty swallowing

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Culture: Symbolizes tropical vitality and calm indoor ambiance

Usage: Ornamental foliage for large indoor spaces, living walls, and tropical-themed terrariums