Snake Plant Brown Spots: Scale vs. Injury vs. Overwatering

Snake plant has brown spots (scrape off but return), pale lower leaves. Grown under fluorescent light. Expert diagnoses likely scale, explains raised vs. sunken spots, light needs.

Spot Diagnosis

• Raised spots = Scale insects (hard shell, suck sap)
• Sunken spots = Injury or overwatering (cat chew, edema)
• Pale lower leaves = Normal aging OR low light

Scale Treatment

• Lightweight summer oil (lighter than dormant oil)
• Multiple applications needed
• Quarantine from other plants

Light Improvement

• Fluorescent light: Keep 6-12" from foliage, 12-14 hrs/day
• Brighter light = greener lower leaves (but base stays pale)
• Direct morning sun beneficial if acclimated

Repotting Warning

Don't repot snake plants unnecessarily. They bloom best when crowded. Mature plants send up fragrant flower spikes annually.

Cat Alert

Cats chew snake plants. Place out of reach if chew marks seen.