Solanum lycopersicum Motto F1 Sticky Leaves - Causes & Fixes

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Aphid Infestation

Aphids are small, soft-bodied insects that pierce the stem and leaves of tomato plants to suck out sap, excreting a sugary substance known as honeydew. This residue creates a visible sticky film on the leaf surfaces.

Very Common

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How to confirm: Inspect the undersides of new leaves and growing tips 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 Deadbug Brew 16 oz

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2 Gently wash the sticky residue off the leaves using a soft stream of water or a mild insecticidal soap to prevent fungal growth.

Bonide Captain Jack's Insecticidal Super Soap 32 oz

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3 Monitor the plant closely using yellow sticky traps to capture any remaining flying aphids or adults.

Super Ninja Fungus Gnat Traps - 30 Pack

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Whitefly Infestation

Whiteflies feed on the underside of tomato foliage, producing honeydew as they digest plant fluids. Their presence is often accompanied by a cloud of tiny white insects when the plant is disturbed.

Very Common

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How to confirm: Gently shake the plant and look for a sudden swarm of small, white moth-like insects flying around the foliage.

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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

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2 Place yellow sticky traps near the foliage to capture flying adults and monitor the infestation level.

Super Ninja Fungus Gnat Traps - 30 Pack

30 pcs

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3 Wipe the sticky honeydew residue off the leaves with a damp cloth to prevent fungal growth and allow the plant to breathe.

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Scale Insects

Scale insects attach themselves to tomato stems or leaves and secrete honeydew while feeding on phloem sap. Unlike aphids, they are often stationary and look like small bumps or shells on the plant.

Common

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How to confirm: Check for small, immobile, waxy bumps on the stems or leaf petioles that cannot be easily wiped off.

build How to fix it

shopping_cart Recommended Products

1 Apply an organic insecticide to eliminate the scale insects and stop the secretion of honeydew.

Bonide Captain Jack's Neem Oil 32 oz

0.9 L • 1 pcs • Organic

$10

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2 Wipe the leaves and stems with a damp cloth to remove the sticky residue and any visible insect shells.

3 Inspect the plant regularly for new bumps on stems to prevent a secondary infestation.

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Sooty Mold Development

While not a primary cause, sooty mold is a black fungus that grows specifically on the sticky honeydew left by sucking insects. It covers the leaves in a dark, matte coating, which can eventually reduce photosynthesis in the Motto F1 cultivar.

Common

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How to confirm: Look for a black, velvety coating covering the areas of the leaf that feel most sticky.

build How to fix it

shopping_cart Recommended Products

1 Identify and eliminate the underlying sucking insects, such as aphids or whiteflies, that are producing the sticky honeydew.

Bonide Captain Jack's Neem Oil 32 oz

0.9 L • 1 pcs • Organic

$10

In Stock

2 Gently wash the black sooty mold off the leaves using a soft cloth or a controlled spray of water to restore photosynthesis.