Anthurium andraeanum Michigan Sudden Leaf Drop - Causes & Fixes

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Root Rot due to Overwatering

Anthuriums are sensitive to stagnant water; excessive moisture in the medium deprives roots of oxygen, leading to fungal decay and systemic failure that triggers leaf abscission.

Very Common

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How to confirm: Gently lift the plant from its pot to check if the roots are dark brown, mushy, or emit a foul odor.

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1 Immediately remove the plant from its current pot and trim away any mushy, black, or foul-smelling roots to stop the spread of decay.

2 Repot the Anthurium in a highly aerated, well-draining medium using a mix of orchid bark and perlite to ensure oxygen reaches the roots.

Legigo 2qt Organic Orchid Bark

1.9 L • Pine Bark

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3 Use a moisture meter to monitor the substrate, ensuring you only water when the top inch of soil is dry to prevent future overwatering.

GROWIT Soil Moisture Meter - Blue

Water Meters

$12

In Stock

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Temperature Shock or Cold Drafts

Anthurium andraeanum is a tropical species that thrives in stable warmth; sudden exposure to temperatures below 60°F (15°C) or cold drafts from windows can cause the plant to drop leaves to conserve energy.

Very Common

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How to confirm: Check if the plant has been recently moved near an air conditioning vent or a drafty window during colder months.

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1 Move your Anthurium to a warmer, stable location away from drafty windows, air conditioning vents, or cold doors.

2 Maintain a consistent environment between 65°F and 80°F to prevent further physiological stress.

3 Monitor soil moisture closely during temperature fluctuations using a moisture meter to ensure the roots do not sit in cold, damp soil.

GROWIT Soil Moisture Meter - Blue

Water Meters

$12

In Stock

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Low Humidity Stress

In environments with humidity levels below 50%, Anthuriums experience high transpiration rates that the root system cannot keep up with, resulting in leaf senescence and drop.

Common

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How to confirm: Use a hygrometer to measure the ambient humidity around the plant's foliage.

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1 Increase local humidity around the plant by using a pebble tray or a humidifier to maintain levels above 50%.

Bleuhome 6-Pack 6in Plant Saucers Black

Pot Saucers

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2 Mist the foliage regularly with a fine spray to provide immediate moisture to the leaves.

Flora Premium Plant Mister

Spray Bottles

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3 Monitor soil moisture levels to ensure the plant is not also experiencing drought stress during this period.

GROWIT Soil Moisture Meter SMM-V3

Water Meters

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Pest Infestation (Scale or Mealybugs)

Heavy infestations of sap-sucking pests like scale or mealybugs drain the plant of vital nutrients and can weaken the structural integrity of the petioles, causing leaves to detach.

Common

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How to confirm: Inspect the undersides of leaves and the junctions between stems for small, white cottony spots or hard brown bumps.

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1 Inspect the undersides of leaves and stem junctions for white, cottony masses (mealybugs) or small, brown bumps (scale).

2 Apply an organic insecticide spray to the entire plant to eliminate existing pests and prevent further nutrient drainage.