Anthurium andraeanum Leganza Sticky Leaves - Causes & Fixes

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Scale Insects

Scale insects attach themselves to the underside of the leaves and pierce the plant tissue to suck sap, excreting a sugary substance known as honeydew. This honeydew is what creates the sticky residue on the leaf surface.

Very Common

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How to confirm: Inspect the undersides of leaves and stems for small, stationary bumps or brownish oval-shaped shells.

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1 Treat the plant with an organic insecticide to eliminate the scale insects and stop the production of honeydew.

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2 Wipe the leaves with a damp cloth to remove the sticky residue and prevent the growth of sooty mold.

3 Inspect the undersides of all leaves and stems for any remaining scale insects to prevent re-infestation.

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Aphid Infestation

Aphids are soft-bodied insects that congregate on tender new growth and leaf undersides, secreting large amounts of sticky honeydew as they feed on the plant's phloem.

Very Common

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How to confirm: Look for tiny, green or peach-colored insects clustered around the base of new leaves or flower spathes.

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1 Apply an organic insecticide to eliminate the aphid population and stop the production of honeydew.

Bonide Captain Jack's Neem Oil 32 oz

0.9 L • 1 pcs • Organic

$10

In Stock

2 Wipe the leaves with a damp cloth to remove the sticky residue and prevent fungal growth.

3 Check the undersides of new growth regularly to ensure no new pests have emerged.

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Mealybugs

While mealybugs primarily produce white, cottony masses, their metabolic byproducts can contribute to a sticky film on the Anthurium foliage as they feed on sap.

Common

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How to confirm: Check the leaf axils and junctions of the stems for small, white, waxy clusters that look like bits of cotton.

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shopping_cart Recommended Products

1 Treat the plant immediately with an organic insecticide to eliminate the mealybug infestation and stop the production of honeydew.

Bonide Captain Jack's Neem Oil 32 oz

0.9 L • 1 pcs • Organic

$10

In Stock

2 Wipe the leaves with a damp cloth to remove the sticky residue and any visible white cottony masses.

3 Monitor the plant closely using a sticky trap to catch any remaining flying pests or nymphs.

Super Ninja Fungus Gnat Traps - 30 Pack

30 pcs

$7

In Stock

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Sooty Mold (Secondary Infection)

This is not the primary cause but a consequence; black, velvety fungus grows directly on the sticky honeydew left by insects, eventually coating the red spathes.

Common

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How to confirm: Check if the stickiness is accompanied by a dark, soot-like coating that can be wiped off the leaf surface.

build How to fix it

shopping_cart Recommended Products

1 Identify and eliminate the underlying pest causing the sticky honeydew, such as aphids, scale, or mealybugs, using an organic insecticide.

Bonide Captain Jack's Neem Oil 32 oz

0.9 L • 1 pcs • Organic

$10

In Stock

2 Gently wipe the black sooty mold off the leaves and red spathes with a soft cloth dampened with water or a mild insecticidal soap to restore photosynthesis.