Aloe Plant Black Spots: Insect Damage, AC Stress, and Treatment

A healthy indoor aloe developed black spots within a week. The owner suspects air conditioning drafts. Questions include whether cutting affected leaves promotes regrowth.

Likely Causes

• Sucking insects: Scale, mealybugs, or spider mites leave stippled black/brown spots from feeding damage.
• Environmental stress: Direct AC airflow causes cold damage and dehydration, especially on succulents.
• Insufficient light: Aloes need intense light; indoor conditions often cause decline over time.

Action Steps

1. Inspect leaf undersides and stems for tiny insects or cottony residue.
2. Move plant away from AC vents immediately.
3. Provide maximum possible light—south-facing window or grow lights.
4. Remove severely damaged leaves at the base; aloes generate new growth from the center.
5. For accurate diagnosis, photos can be sent to plant experts.

Aloes are poor long-term houseplants due to high light requirements. Consider transitioning to outdoor placement in suitable climates.