Dahlia Lover Beach Yellow Leaves - Causes & Fixes

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Nitrogen Deficiency

Dahlias are heavy feeders, and a lack of nitrogen causes older leaves to lose chlorophyll first, turning them pale yellow. This is common in 'Lover Beach' if the soil has been depleted by rapid tuber growth.

Very Common

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How to confirm: Check if the yellowing started on the oldest, lowest leaves while the new growth remains green.

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1 Apply a nitrogen-rich liquid fertilizer to provide immediate nutrient uptake and help restore chlorophyll production.

FoxFarm Grow Big Liquid Plant Food 1 Quart

0.9 L • 1 pcs

$30

In Stock

2 Incorporate an organic soil amendment like worm castings into the top layer of soil to provide a slow-release nitrogen source.

Back to the Roots Organic Worm Castings 5lb

Worm Castings

$17

In Stock

3 Monitor soil moisture levels to ensure the plant can effectively absorb the newly applied nutrients.

GROWIT Soil Moisture Meter - Blue

Water Meters

$12

In Stock

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Overwatering and Root Suffocation

Excessive moisture in the soil prevents oxygen from reaching the tuberous roots, leading to chlorosis. This is particularly dangerous for Dahlias as it can quickly transition into fungal rot.

Very Common

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How to confirm: Insert your finger 2 inches into the soil; if it feels muddy or saturated, reduce watering frequency.

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1 Immediately stop watering and allow the soil to dry out significantly to restore oxygen to the tuberous roots.

GROWIT Soil Moisture Meter SMM-V3

Water Meters

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2 Check the drainage of your container; if water is pooling, repot the Dahlia in a well-draining medium like Espoma Organic Potting Soil Mix to prevent future rot.

Espoma Organic Potting Soil Mix

15.1 L

$22

In Stock

3 Ensure the plant is in a pot with adequate drainage holes and use a saucer to catch excess water, but do not let the pot sit in standing water.

Bleuhome 10" Plant Saucer 6-Pack Black

Pot Saucers

$20

In Stock

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Botrytis Blight (Early Stage)

While typically known for gray mold, early-stage Botrytis can cause leaves to yellow and wilt in humid conditions. This species is susceptible if air circulation around the foliage is poor.

Common

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How to confirm: Inspect the undersides of the yellowing leaves for small, fuzzy gray fungal patches.

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1 Remove and discard all yellowing or wilted leaves immediately to prevent the fungus from spreading to healthy foliage.

2 Apply an organic fungicide to protect the remaining healthy plant tissue from further infection.

Bonide Captain Jack's Copper Fungicide 32 oz

0.9 L • 1 pcs • Organic

$12

In Stock

3 Improve air circulation around the plant by pruning crowded stems and ensuring the plant is not in a high-humidity, stagnant area.

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Spider Mite Infestation

Tiny mites feeding on the sap of 'Lover Beach' can cause a mottled, yellowish appearance on the leaf surface. This is often accompanied by fine webbing on the undersides of leaves.

Common

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How to confirm: Hold a white piece of paper under a leaf and tap it to see if tiny specks begin to crawl.

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shopping_cart Recommended Products

1 Apply an organic insecticide spray to the plant, ensuring you coat the undersides of the leaves to eliminate mites and their eggs.