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Treating Fertilizer Burn on Peace Lily

Over-fertilizing burned roots and leaves. Drench pot thoroughly to flush salts. Then apply Messenger (harpin protein) to stimulate repair and immunity. It's a protein, not fertilizer, developed at Cornell. Hard to find but worth it for valuable plants.

House Plants: Peace Lily Black Spots: Causes and Solutions for Healthy Plants; Peace Lily Brown Tips: Water by Weight, Mist, Fertilize Monthly; Managing an Overgrown Peace Lily: Pruning and Repotting Tips; Peace Lily Blooms Turning Black: Check for Pests; Peace Lily Outdoors: Only in Warm Shade, No Wind; Identifying a Colorful Outdoor Plant: Is It a Peace Lily or Caladium?; Peace Lily Transplanted from Water to Soil: Root Rot Emergency; Peace Lily Blooming Secrets: Light, Pot-Binding, and Watering; Peace Lily (Spathiphyllum) Complete Care Guide; Mystery Funeral Plant Is Anthurium, Not Peace Lily: Sandy Soil, Less Water

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