Aeonium haworthii Sudden Leaf Drop - Causes & Fixes

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Overwatering and Root Rot

Aeoniums are succulents that store water in their leaves; excessive moisture causes the root system to decay, preventing water transport and leading to rapid leaf abscission. As the roots rot, the plant can no longer support its foliage, causing it to drop leaves suddenly.

Very Common

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How to confirm: Gently lift the plant from its pot to check if the roots are black, slimy, or smell like decay.

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1 Immediately remove the plant from its current container and inspect the roots for any mushy, black, or foul-smelling decay.

2 Prune away all dead or rotting roots using sterilized tools and repot the plant in a well-draining, gritty succulent mix containing perlite for aeration.

3 Use a moisture meter to monitor the soil and ensure you only water when the substrate is completely dry to prevent future rot.

GROWIT Soil Moisture Meter - Blue

Water Meters

$12

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Extreme Temperature Fluctuations (Heat Stress)

While Aeoniums enjoy mild temperatures, sudden exposure to intense, direct midday sun or extreme heatwaves can cause the plant to drop leaves as a defense mechanism to reduce surface area and transpiration.

Very Common

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How to confirm: Check if the leaf drop coincided with a recent heatwave or moving the plant to a more exposed window.

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1 Move the plant to a shaded or more stable environment to protect it from intense midday sun and extreme heat spikes.

2 Monitor soil moisture levels closely to ensure the plant remains hydrated without becoming waterlogged during heat stress.

GROWIT Soil Moisture Meter - Blue

Water Meters

$12

In Stock

3 Apply a liquid seaweed fertilizer to help the plant recover from environmental stress and boost nutrient uptake.

FoxFarm Bush Doctor Kelp Me Kelp You Liquid Seaweed Fertilizer 1 Quart

0.9 L • 1 pcs

$32

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Dormancy Cycle

Aeoniums undergo a physiological change during the summer months when temperatures rise, often entering a semi-dormant state where they may shed older leaves to conserve energy.

Common

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How to confirm: Observe if the remaining leaves are firm and healthy or if the entire plant looks wilted.

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1 Monitor soil moisture closely during this period to ensure you are not overwatering, as the plant's metabolic rate has slowed.

GROWIT Soil Moisture Meter - Blue

Water Meters

$12

In Stock

2 Provide bright, indirect light and avoid intense, direct afternoon sun which can stress the plant during its summer dormancy.

3 Clean up fallen leaves from the base of the plant to prevent moisture buildup and potential fungal issues.

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Pest Infestation (Scale or Mealybugs)

Sap-sucking insects like scale or mealybugs can weaken the Aeonium by draining its stored nutrients, leading to physiological stress and leaf drop.

Common

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How to confirm: Inspect the undersides of leaves and the stem junctions for small white cottony spots or hard brown bumps.

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1 Inspect the undersides of leaves and crevices for white, cottony clusters (mealybugs) or small, brown bumps (scale) and treat immediately with an organic insecticide spray.

Bonide Captain Jack's Neem Oil 32 oz

0.9 L • 1 pcs • Organic

$10

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2 Gently wipe away visible pests using a cotton swab dipped in isopropyl alcohol to prevent further nutrient depletion and stress.

3 Isolate the plant from other greenery to stop the spread of infestation and monitor soil moisture to ensure the plant isn't also suffering from overwatering.

GROWIT Soil Moisture Meter - Blue

Water Meters

$12

In Stock