Citrus meyeri Sticky Leaves - Causes & Fixes

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Aphid Infestation

Aphids are small, soft-bodied insects that pierce the tender new growth of Meyer Lemon trees to suck sap, excreting a sugary substance known as honeydew. This sticky residue often coats the leaves and can lead to the growth of black sooty mold.

Very Common

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How to confirm: Inspect the undersides of new leaves and developing fruit buds for tiny, green or black moving insects.

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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

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2 Gently wipe the sticky residue and any visible sooty mold from the leaves using a soft cloth and water to allow the plant to breathe.

3 Inspect the undersides of leaves and new growth regularly to catch any remaining pests before they multiply.

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Scale Insects

Scale insects attach themselves to citrus stems and leaf veins, feeding on sap and secreting honeydew. Unlike aphids, these pests often look like stationary, waxy bumps or small bumps on the bark or leaf petioles.

Very Common

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How to confirm: Scrape the surface of any hard, brownish bumps on the stems with a fingernail to see if they are living organisms.

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shopping_cart Recommended Products

1 Apply an organic insecticide spray to the plant to eliminate the scale insects and their eggs.

Bonide Captain Jack's Neem Oil 32 oz

0.9 L • 1 pcs • Organic

$10

In Stock

2 Physically remove visible scale bumps from stems and leaves using a soft cloth or cotton swab dipped in rubbing alcohol.

3 Wipe the sticky honeydew residue off the leaves with a damp cloth to prevent the growth of sooty mold.

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Whitefly Infestation

Whiteflies congregate on the undersides of Meyer Lemon leaves; as they feed, they release honeydew that makes the foliage feel tacky. A cloud of tiny white insects may emerge when the branches are disturbed.

Common

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How to confirm: Gently shake a branch over a white sheet to see if small white flies flutter upward.

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shopping_cart Recommended Products

1 Apply an organic insecticide spray to the undersides of the leaves to eliminate adult whiteflies and larvae.

Bonide Captain Jack's Neem Oil 32 oz

0.9 L • 1 pcs • Organic

$10

In Stock

2 Deploy yellow sticky traps near the plant to capture flying adults and monitor the infestation level.

Super Ninja Fungus Gnat Traps - 30 Pack

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3 Wipe the sticky honeydew residue off the leaves with a damp cloth to prevent the growth of sooty mold.

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Sooty Mold

While not a primary cause, sooty mold is a fungus that grows specifically on the sticky honeydew left behind by sucking insects. While it doesn't directly cause stickiness, its presence confirms an active pest infestation is occurring.

Common

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How to confirm: Look for a black, powdery coating on the leaves that can be wiped off with a damp cloth.

build How to fix it

shopping_cart Recommended Products

1 Identify and eliminate the underlying pest infestation (such as aphids, scale, or whiteflies) using an organic insecticide to stop the production of honeydew.

Bonide Captain Jack's Neem Oil 32 oz

0.9 L • 1 pcs • Organic

$10

In Stock

2 Gently wipe the leaves with a damp cloth or use a soft spray to remove the black sooty mold residue and restore the plant's ability to photosynthesize.

3 Monitor soil moisture levels to ensure the plant remains healthy and resilient against further pest attacks.