Onion Boreas F1 Sticky Leaves - Causes & Fixes

Jump to cause: Aphid Infestation Scale Insects Whitefly Infestation

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Aphid Infestation

Aphids are small, soft-bodied insects that congregate on the tender base and leaves of onions to suck out sap. As they feed, they excrete 'honeydew,' a highly sticky, sugar-rich substance that coats the onion foliage.

Very Common

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How to confirm: Inspect the undersides of the onion leaves and the base of the plant 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

0.9 L • 1 pcs • Organic

$10

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2 Wash the sticky residue off the onion leaves using a firm stream of water to prevent fungal growth.

3 Monitor the plant closely with a moisture meter to ensure the plant remains hydrated while recovering from the infestation.

GROWIT Soil Moisture Meter - Blue

Water Meters

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Scale Insects

Scale insects attach themselves to the onion stalks and pierce the plant tissue to feed on sap. Similar to aphids, they produce honeydew that results in a sticky residue on the surface of the Boreas leaves.

Common

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How to confirm: Look for small, stationary, scale-like bumps or shells attached firmly to the stems or leaf bases.

build How to fix it

shopping_cart Recommended Products

1 Apply an organic insecticide to eliminate the scale insects 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 sticky residue off the onion leaves with a damp cloth to prevent fungal growth and allow the plant to breathe.

3 Inspect the undersides of leaves and stems regularly to catch any remaining insects before they spread.

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Whitefly Infestation

Whiteflies feed on the undersides of onion leaves, secreting honeydew that makes the plant surface sticky. This residue can often lead to secondary issues like sooty mold growth.

Common

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How to confirm: Gently shake the onion plant to see if a cloud of tiny white insects emerges from the foliage.

build How to fix it

shopping_cart Recommended Products

1 Apply an organic insecticide spray to the undersides of the leaves to eliminate the whitefly population and stop honeydew production.

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 for further infestation.