Gerbera jamesonii Royal F1 Red Bicolour Sticky Leaves - Causes & Fixes

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Aphid Infestation

Aphids are small, soft-bodied insects that pierce the tender stems and leaves of Gerbera to suck sap, excreting a sugary substance known as honeydew. This residue creates the characteristic sticky film on the foliage.

Very Common

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How to confirm: Inspect the underside of leaves and new flower 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.

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2 Wipe the sticky residue off the leaves using a soft cloth and water to prevent fungal growth and allow the plant to breathe.

3 Place yellow sticky traps near the plant to capture any remaining flying aphids and monitor for new arrivals.

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Scale Insects

Scale insects attach themselves to the stems and leaf undersides of Transvaal Daisies, feeding on plant fluids and producing honeydew as a byproduct. Unlike aphids, these pests often appear as stationary, waxy bumps.

Very Common

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How to confirm: Check for small, hard, scale-like bumps on the stems that can be scraped off with a fingernail.

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shopping_cart Recommended Products

1 Apply an organic insecticide spray to the leaves and stems 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 the stems and undersides of leaves using a cotton swab dipped in rubbing alcohol.

3 Wipe away the sticky honeydew residue from the leaves to prevent the growth of sooty mold.

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Whitefly Infestation

Whiteflies congregate on the undersides of Gerbera leaves; as they feed, they release honeydew which makes the leaf surface tacky. You may also notice a fine white powder or tiny flying insects when disturbing the plant.

Common

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How to confirm: Gently tap the foliage to see if a cloud of tiny white insects flies out from beneath the leaves.

build How to fix it

shopping_cart Recommended Products

1 Apply an organic insecticide to eliminate the whitefly 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 Place yellow sticky traps near the plant to capture adult whiteflies and monitor the infestation level.

Super Ninja Fungus Gnat Traps - 30 Pack

30 pcs

$7

In Stock

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

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Mealybugs

Mealybugs are related to scale and produce honeydew, though they are more easily identified by their white, cottony, or waxy appearance. They tend to hide in the tight crevices between the leaf base and the stem.

Common

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How to confirm: Look for small, white, fluffy clusters nestled in the leaf axils or near the base of the flower head.

build How to fix it

shopping_cart Recommended Products

1 Inspect the crevices between the leaf bases and stems for white, cottony clusters and remove visible pests manually using a cotton swab dipped in isopropyl alcohol.

2 Apply an organic insecticide spray to the entire plant, ensuring you coat the undersides of leaves and tight crevices to eliminate remaining insects and larvae.

Bonide Captain Jack's Neem Oil 32 oz

0.9 L • 1 pcs • Organic

$10

In Stock

3 Wipe the sticky honeydew residue from the leaves with a damp cloth to prevent the growth of sooty mold and allow the plant to breathe.