Anthurium andraeanum Sweet Dream Yellow Leaves - Causes & Fixes

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Overwatering and Root Rot

Anthuriums are highly sensitive to moisture; prolonged wet soil causes Pythium or Phytophthora species to attack the roots, leading to chlorosis (yellowing) as the plant can no longer transport nutrients.

Very Common

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How to confirm: Gently lift the plant from its pot to check if the roots are dark brown and slimy rather than firm and white.

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1 Immediately remove the plant from its current pot and trim away any mushy, black, or foul-smelling roots caused by rot.

2 Repot the Anthurium in a fresh, highly aerated medium to prevent future waterlogging; a mix containing perlite or orchid bark is ideal.

3 Use a moisture meter to monitor the soil and ensure you only water when the top inch of substrate is dry to prevent a recurrence of overwatering.

GROWIT Soil Moisture Meter - Blue

Water Meters

$12

In Stock

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Nutrient Deficiency (Nitrogen or Magnesium)

The 'Sweet Dream' cultivar has high metabolic demands; a lack of nitrogen causes older leaves to turn uniformly yellow, while magnesium deficiency often presents as interveinal chlorosis.

Very Common

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How to confirm: Observe if the yellowing starts on older, lower leaves and check when you last applied a balanced liquid fertilizer.

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1 Apply a balanced liquid fertilizer to address nitrogen and magnesium needs; FoxFarm Grow Big is excellent for promoting lush vegetative growth.

FoxFarm Grow Big Liquid Plant Food 1 Quart

0.9 L • 1 pcs

$30

In Stock

2 Supplement with a magnesium-rich additive like FoxFarm Cal Mag to specifically target interveinal chlorosis and strengthen cell walls.

FoxFarm Bush Doctor Cal Mag Liquid Supplement 1 Quart

0.9 L • 1 pcs • Organic

$27

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3 Monitor soil moisture levels with an analog meter to ensure that overwatering isn't masking or exacerbating the yellowing symptoms.

GROWIT Soil Moisture Meter - Blue

Water Meters

$12

In Stock

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Improper Light Intensity

Excessive direct sunlight can bleach the chlorophyll in the leaves, causing them to turn yellow/pale, while too little light prevents photosynthesis, leading to leaf senescence.

Common

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How to confirm: Check if the yellowing is accompanied by scorched brown spots or if it occurs in a corner of the room with low natural light.

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1 Relocate your Anthurium to a spot with bright, indirect light, avoiding harsh direct afternoon sun which can bleach the leaves.

2 If your indoor space lacks sufficient natural light, supplement with a full-spectrum LED grow light to support photosynthesis.

SANSI 10W Full Spectrum Gooseneck Grow Light

1 pcs

$19

In Stock

3 Monitor the soil moisture levels closely, as improper light often disrupts the plant's water uptake and transpiration rates.

GROWIT Soil Moisture Meter - Blue

Water Meters

$12

In Stock

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Temperature Stress or Cold Drafts

Anthuriums are tropical plants that thrive in stable temperatures; exposure to drafts from air conditioners or temperatures below 60°F (15°C) can trigger leaf yellowing as a stress response.

Common

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How to confirm: Check if the plant is positioned near an external window, vent, or door that experiences sudden temperature fluctuations.

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shopping_cart Recommended Products

1 Relocate your Anthurium to a warm, stable area away from air conditioning vents, drafty windows, or cold doors to maintain temperatures consistently above 60°F.

2 Monitor the soil moisture closely during temperature fluctuations, as cold soil can lead to root rot; use a moisture meter to ensure the medium remains damp but not waterlogged.

GROWIT Soil Moisture Meter - Blue

Water Meters

$12

In Stock

3 If the plant shows signs of recovery, apply a diluted liquid fertilizer to help restore vigor and support new growth.

FoxFarm Grow Big Liquid Plant Food 1 Quart

0.9 L • 1 pcs

$30

In Stock