Echeveria runyonii Sudden Leaf Drop - Causes & Fixes

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Overwatering and Root Rot

Echeveria runyonii are succulents that require well-draining soil; excess moisture causes the roots to decay, preventing the plant from supporting its leaves. As the root system fails, the plant can no longer transport water, leading to rapid leaf abscission.

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 have a foul odor.

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1 Immediately remove the plant from the pot and trim away any mushy, black, or foul-smelling roots using sterilized tools.

2 Repot the Echeveria in a fresh, highly porous substrate designed for succulents to ensure rapid drainage and prevent future rot.

3 Use a moisture meter to monitor the soil, ensuring you only water when the medium is completely dry to the touch.

GROWIT Soil Moisture Meter - Blue

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Temperature Shock (Cold Stress)

This species is sensitive to frost and sudden drops in temperature. Exposure to temperatures near freezing causes cellular damage in the leaves, leading them to detach from the stem quickly.

Common

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How to confirm: Check if there has been a recent cold snap or if the plant was placed near a drafty window.

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1 Immediately move the plant to a warmer, stable environment and protect it from further drafts or freezing temperatures.

2 Check the soil moisture levels to ensure the cold stress hasn't led to overwatering, as cold, wet soil can accelerate rot.

GROWIT Soil Moisture Meter - Blue

Water Meters

$12

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3 Provide supplemental warmth and consistent light to help the plant recover its metabolic processes.

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Pest Infestation (Mealybugs)

Small, white, cotton-like insects feed on the sap of Echeveria, weakening the structural integrity of the leaf attachments. Severe infestations can cause leaves to drop as the plant's resources are depleted.

Common

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How to confirm: Inspect the base of the leaves and the crevices of the rosette for tiny white, fuzzy clusters.

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1 Isolate the plant immediately and treat the infestation with an organic insecticide to kill adult mealybugs and larvae.

Bonide Captain Jack's Neem Oil 32 oz

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2 Carefully inspect the leaf axils and crevices for white cottony clusters and wipe them away with a cotton swab dipped in alcohol.

3 Ensure the plant is in a well-draining medium with plenty of aeration to prevent further stress and secondary rot.

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Nutrient Deficiency or Soil Depletion

If the plant has been in the same substrate for many years without fertilization, a lack of essential micronutrients can lead to weakened growth and premature leaf shedding.

Common

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How to confirm: Check if the fallen leaves are accompanied by pale, chlorotic discoloration in the remaining rosette.

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1 Check the soil moisture levels using a moisture meter to ensure the leaf drop isn't actually caused by overwatering or root rot.

GROWIT Soil Moisture Meter - Blue

Water Meters

$12

In Stock

2 Repot the Echeveria in a fresh, well-draining succulent mix amended with perlite to restore soil structure and aeration.