Zantedeschia aethiopica Drooping Leaves - Causes & Fixes

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Overwatering and Root Rot

Zantedeschia aethiopica is highly susceptible to Phytophthora rot when the rhizome sits in waterlogged soil. Excessive moisture deprives roots of oxygen, leading to tissue death and subsequent leaf wilting.

Very Common

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How to confirm: Gently lift the plant to check if the rhizome feels mushy or smells like decay.

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1 Immediately remove the plant from its current container and discard any mushy, blackened, or foul-smelling roots.

2 Repot the rhizome in a well-draining, fresh medium like Espoma Organic Potting Soil Mix to ensure proper aeration and prevent future waterlogging.

Espoma Organic Potting Soil Mix

15.1 L

$22

In Stock

3 Use a moisture meter to monitor the soil, ensuring you only water when the top inch of soil is dry to prevent oxygen deprivation.

GROWIT Soil Moisture Meter SMM-V3

Water Meters

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Underwatering / Drought Stress

Calla Lilies have large, fleshy leaves with high transpiration rates. If the soil dries out completely, the plant loses turgor pressure, causing the upright leaves to collapse.

Very Common

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How to confirm: Check the moisture level 2 inches below the soil surface; if bone dry, it needs immediate hydration.

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1 Immediately check the soil moisture level using a probe to confirm the depth of the drought stress.

GROWIT Soil Moisture Meter SMM-V3

Water Meters

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2 Thoroughly water the plant until water drains from the bottom of the pot, ensuring the entire root ball is saturated.

Chapin 48000 0.5G Watering Can

2.3 L • Recycled Plastic

$12

In Stock

3 To prevent future dehydration, consider using a self-watering system or a moisture-retaining substrate like coco coir.

Back to the Roots Organic Coir 51qt

48 L • Coconut Coir

$19

In Stock

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Temperature Fluctuations (Cold Stress)

This species is sensitive to sudden drops in temperature. Exposure to drafts or temperatures below 50°F (10°C) can cause the metabolic processes to slow and leaves to droop.

Common

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How to confirm: Observe if the drooping coincides with recent exposure to cold windows or nighttime temperature drops.

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1 Move the plant to a stable, warm environment away from cold drafts, windows, or air conditioning vents to maintain temperatures above 50°F.

2 Monitor the soil moisture closely, as cold stress can interfere with water uptake; use a moisture meter to ensure the soil remains consistently moist but not waterlogged.

GROWIT Soil Moisture Meter - Blue

Water Meters

$12

In Stock

3 Apply a microbial-based fertilizer to help the plant recover from environmental stress and support root zone development.

FoxFarm Bush Doctor Boomerang Liquid Plant Fertilizer 1 Pint

0.5 L • 1 pcs

$20

In Stock

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Nutrient Deficiency (Nitrogen)

A lack of nitrogen prevents the production of chlorophyll and structural strength in the stems. While often accompanied by yellowing, it can manifest as weak, drooping foliage.

Common

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How to confirm: Look for pale or yellowish discoloration on older leaves preceding the drooping.

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1 Apply a nitrogen-rich liquid fertilizer to boost chlorophyll production and structural strength in the stems.