Oval yellow spots with dark centers suggest a fungal leaf spot. Corn plants (Dracaena fragrans) are also sensitive to fluoride in tap water, which causes tip burn. For diagnosis and treatment, consult the Penn State factsheet on Dracaena diseases and the UGA houseplant care guide. If spraying, move plant outdoors or to a bathtub, follow label directions, and allow to dry before returning indoors.
sanseveria
Robellini Palm Browning: Root/Crown Rot from Excess Water
Fungal Disease on Gardenias: Copper-Based Organic Treatment
Brown Bumps Under Orchid Leaves: Scale Insect Identification and Eradication
Deciduous Dendrobium Leaf Drop and Scale Insect Treatment
Professional Corn Plant Care: When to Call an Expert
Pruning and Repotting an Overgrown Corn Plant (Dracaena)
Identifying and Treating Spider Mites on Kentia or Majesty Palm
Corn Plant Pruning and Propagation for Symmetry
Dividing Corn Plants (Dracaena fragrans): Timing and Technique
Corn Plant Toxicity: Keep Cats and Dogs Safe
Don't Repot That New Dracaena marginata Into a Big Ceramic Pot
Candy Corn Plant (Manettia) Leaf Browning Fixes
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