Kalanchoe thyrsiflora Yellow Leaves - Causes & Fixes

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Overwatering and Root Rot

Kalanchoe thyrsiflora are succulents that store water in their fleshy leaves; excessive moisture causes the roots to suffocate and decay, leading to systemic yellowing of the paddles.

Very Common

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How to confirm: Gently squeeze the base of a yellow leaf to see if it feels mushy or if there is a foul odor coming from the soil.

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1 Immediately remove the plant from its current pot and discard any mushy, black, or foul-smelling roots caused by rot.

2 Repot the plant in a well-draining, gritty substrate specifically designed for succulents to prevent future water retention.

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

GROWIT Soil Moisture Meter - Blue

Water Meters

$12

In Stock

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Nutrient Deficiency (Nitrogen)

A lack of nitrogen prevents the plant from producing chlorophyll, causing older, lower paddles to turn pale yellow before moving up the plant.

Common

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How to confirm: Check if the yellowing is starting on the oldest leaves at the base of the stem while new growth remains green.

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1 Apply a nitrogen-rich liquid fertilizer to boost chlorophyll production and green up the foliage.

FoxFarm Grow Big Liquid Plant Food 1 Quart

0.9 L • 1 pcs

$30

In Stock

2 Check the soil moisture levels with a meter to ensure the nitrogen is being absorbed effectively and not being washed away by overwatering.

GROWIT Soil Moisture Meter - Blue

Water Meters

$12

In Stock

3 Prune away the most severely yellowed lower leaves to allow the plant to redirect energy to new growth.

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Insufficient Light Exposure

While they love sun, extreme shade can cause the plant to lose its pigment and produce thin, yellowish leaves as it struggles to photosynthesize efficiently.

Common

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How to confirm: Observe if the plant is stretching (etiolation) toward a light source alongside the yellowing color.

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1 Move your Kalanchoe to a location with much brighter, indirect light or a spot that receives several hours of direct sunlight to restore pigment production.

SANSI 4-Head 40W LED Grow Light

4 pcs

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2 Supplement with a full-spectrum grow light if natural light is insufficient to ensure the plant can photosynthesize efficiently.

SANSI 4-Head 40W LED Grow Light

4 pcs

—

3 Monitor the soil moisture closely, as insufficient light often leads to slower water evaporation and potential root issues.

GROWIT Soil Moisture Meter - Blue

Water Meters

$12

In Stock

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Temperature Stress

Exposure to sudden cold drafts or temperatures below 50°F (10°C) can shock the succulent tissues, causing leaves to lose their characteristic color and turn yellow.

Common

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How to confirm: Check if the plant is located near a drafty window or an air conditioning vent.

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shopping_cart Recommended Products

1 Move your Kalanchoe to a stable, warm environment away from cold windows, doors, or air conditioning drafts to prevent further temperature shock.

2 Monitor the soil moisture closely, as temperature fluctuations can disrupt watering needs; use a moisture meter to ensure the soil is drying out between waterings.

GROWIT Soil Moisture Meter - Blue

Water Meters

$12

In Stock

3 If the plant shows signs of recovery, apply a light feeding of seaweed fertilizer to help boost its resilience against environmental stress.