Mother-in-Law's Tongue (Sansevieria) Ulcers: Overwatering + Pest Spread

Increased watering to weekly; now round brown ulcers on leaves. Other plants have pests.

Dual Problem

Pests likely spread: Spray all plants at once with NEEM + horticultural oil (crawlers + scale).
Primary issue = overwatering: Sansevieria extremely sensitive. Water weekly, thoroughly, remove all saucer water. Standing water = #1 killer.

Expert insight provided by Melissa.

Plant Diseases: Snake Plant (Sansevieria) Root System Care: Watering, Salt, and Repotting; Schefflera Leaf Tip Burn and Drop: Water and Temperature Balance; Calamondin Sudden Death: Container Watering Issues—Drainage and Fertilizer; Reviving a Declining Potted Palm from Overwatering; Reviving a Water-Rooted Snake Plant: Transition to Soil, Nutrients, and Light; Rescuing Carnivorous Plants from Low Light: Identification and Rehabilitation; Drosera adelae Disaster: Freeze, Fertilizer Burn, Sun Scorch, and Drought—Is It Dead?; Snake Plant Leaf Curling: Normal in Bright Light; Ponytail Palm in Self-Watering Pot: Why It's Rotting and How to Fix; Multiple Houseplant Issues: Overwatering Root Cause

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