Zantedeschia Santa Fe Yellow Leaves - Causes & Fixes

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Overwatering and Root Rot

Zantedeschia species are highly susceptible to rhizome rot if the growing medium stays saturated. Excess water deprives the roots of oxygen, leading to yellowing leaves as the plant's vascular system fails.

Very Common

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How to confirm: Gently lift the rhizome from the pot to check if it feels mushy or smells of decay.

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1 Immediately remove the plant from its current container and inspect the rhizome for mushy, dark, or foul-smelling rot.

2 Prune away all decayed root tissue using sterilized tools and repot the plant in a well-draining, fresh medium like Espoma Organic Potting Soil Mix to ensure proper aeration.

Espoma Organic Potting Soil Mix

15.1 L

$22

In Stock

3 Use a moisture meter to monitor the soil and ensure you only water when the top inch of soil is dry, preventing future saturation.

GROWIT Soil Moisture Meter SMM-V3

Water Meters

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Nutrient Deficiency (Nitrogen)

Calla lilies require consistent nutrients to maintain their large, lush foliage. A lack of nitrogen prevents chlorophyll production, causing older leaves to turn pale yellow before progressing to the center.

Very Common

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How to confirm: Check if the yellowing started on the oldest, bottom leaves first while newer growth remains green.

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

FoxFarm Grow Big Liquid Plant Food 1 Quart

0.9 L • 1 pcs

$30

In Stock

2 Ensure the plant is receiving consistent feeding during its growing season to prevent future nitrogen depletion.

FoxFarm Grow Big Liquid Plant Food 1 Gallon

3.8 L • 1 pcs

$79

In Stock

3 Check the soil moisture levels using a moisture meter to ensure that nutrient uptake is not being hindered by overwatering.

GROWIT Soil Moisture Meter - Blue

Water Meters

$12

In Stock

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Temperature Stress/Cold Shock

Santa Fe Calla Lilies are tender perennials that thrive in warmth. Exposure to temperatures below 50°F (10°C) can cause the metabolic processes to slow, resulting in chlorosis and wilting.

Common

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How to confirm: Verify if the plant has recently been exposed to a cold draft or a significant drop in nighttime temperature.

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1 Move the plant to a warmer, draft-free location, ensuring temperatures remain consistently above 50°F (10°C) to stabilize metabolic processes.

2 Monitor soil moisture closely using a moisture meter to ensure the plant is not being overwatered while in a dormant, cold-stressed state.

GROWIT Soil Moisture Meter - Blue

Water Meters

$12

In Stock

3 Once the plant recovers and new growth appears, apply a balanced liquid fertilizer to help restore vigor.

FoxFarm Grow Big Liquid Plant Food 1 Quart

0.9 L • 1 pcs

$30

In Stock

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Light Stress (Sunscald)

While they enjoy bright light, intense, direct midday sun can scorch the delicate leaves of this cultivar. This physiological stress manifests as yellowing or bleached patches on the leaf surface.

Common

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How to confirm: Observe if the yellow patches are located specifically on the parts of the leaves most exposed to direct sunlight.

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shopping_cart Recommended Products

1 Move the plant to a location with bright, indirect light to prevent further sunscald and allow the leaves to recover.

2 Monitor the soil moisture levels closely, as sun-stressed plants may require more consistent hydration to recover from heat stress.

GROWIT Soil Moisture Meter - Blue

Water Meters

$12

In Stock

3 Prune any completely yellowed or dead leaves using clean shears to redirect the plant's energy toward healthy new growth.