Philodendron Squamiferum problems — and how to fix them

Usually overwatering and soggy soil, though too much direct sun, underwatering, or low light can also cause it. Occasional yellowing of the oldest lower leaves is normal aging. Check soil moisture and roots before adjusting.

Typically low humidity, and sometimes direct sun exposure. Raise humidity with a humidifier or pebble tray and move the plant out of harsh direct light.

Caused by overwatering or poor drainage; roots turn brown and mushy with a foul smell, and leaves wilt. Unpot, trim affected roots, and repot into fresh chunky, well-draining mix; let the top inch dry between waterings.

A common pest in dry indoor air, leaving fine webbing and stippled, yellowing leaves. Rinse the foliage, raise humidity, and treat with insecticidal soap or neem oil, repeating to break the cycle.

Without support and adequate light the plant stays in juvenile form with rounded, unlobed leaves. Provide a moss pole and brighter indirect light to encourage larger, deeply lobed mature foliage.

Often triggered by sudden temperature swings, cold drafts, or watering shock. Keep it in a stable warm spot away from heating vents and draughty doors or windows.