Yucca Palm Sticky Honeydew: Insect Infestation (Aphids/Scale/Mealybugs) + Oversized Pot Causing Root Rot—Alcohol Spray and Pot Correction

First Answer

Sticky white powder = honeydew from insects (aphids, scale, mealybugs). Spray mix: 1 quart rubbing alcohol + 1 pint water + 1 tbsp dish soap. Spray thoroughly (all leaf surfaces + soil) 2x/week for 3 weeks, then 1x/week for 4 weeks. Wipe honeydew with alcohol-dipped paper towels.

Pot Problem

18-inch pot is too large — holds excess water, roots rot, plant drowns. Never increase >2 inches. For now, water only when bamboo skewer comes out dry (may take 2–4 weeks).

Follow-Up: Outdoor Summer Placement

Place outdoors under shady tree 24/7 until night temps drop below 50°F. Morning/evening sun okay; avoid hot afternoon sun.