Marigold Flower Browning: Spider Mite Alert

Spider Mites Love Marigolds

Sudden browning and drying of marigold flowers—despite moist soil—is a classic sign of spider mite infestation. These microscopic 8-legged pests thrive in hot, dry conditions and suck chlorophyll from leaves and petals, giving a “burned” appearance.

Confirm and Act

• Snip a few affected flowers and leaves.
• Take them to a garden center; staff can confirm mites with a hand lens.
• Treat with a miticide or insecticidal soap labeled for spider mites, covering leaf undersides thoroughly.

For your Miltonia orchid, yellowing leaves may indicate a separate cultural issue (light, water, or fertilizer). Isolate it and review its care regimen.