Canna Yellow 767 Yellow Leaves - Causes & Fixes

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Nitrogen Deficiency

Canna lilies are heavy feeders with high metabolic demands. A lack of nitrogen causes the older, lower leaves to turn uniformly yellow as the plant relocates nutrients to new growth.

Very Common

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How to confirm: Check if the yellowing started on the oldest bottom leaves and move toward the top of the plant.

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shopping_cart Recommended Products

1 Apply a nitrogen-rich liquid fertilizer to provide immediate nutrient uptake for the plant.

FoxFarm Grow Big Liquid Plant Food 1 Quart

0.9 L • 1 pcs

$30

In Stock

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

Back to the Roots Blood Meal & Gypsum (4 Pack)

Organic Fertilizer

$40

Out of Stock

3 Monitor soil moisture levels with a meter 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 Hypoxia

Cannas prefer moist soil but cannot tolerate stagnant water. Saturated soil prevents oxygen from reaching the roots, leading to chlorosis (yellowing) and eventual leaf drop.

Very Common

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How to confirm: Stick your finger two inches into the soil to see if it feels soggy or smells like sulfur/decay.

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1 Immediately check the soil moisture levels using a meter to confirm if the root zone is saturated.

GROWIT Soil Moisture Meter - Blue

Water Meters

$12

In Stock

2 Repot the plant in a well-draining medium, incorporating perlite to improve aeration and prevent future hypoxia.

3 Ensure the plant is in a pot with adequate drainage 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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Temperature Stress (Cold Shock)

Canna 'Yellow 767' is a tropical cultivar sensitive to cold. Sudden drops in temperature below 50°F (10°C) can cause the foliage to yellow and wilt as the plant enters a defensive state.

Common

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How to confirm: Check local weather logs for recent frost or sudden nighttime temperature drops.

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shopping_cart Recommended Products

1 Move the plant to a warmer, sheltered location or bring it indoors to protect it from temperatures below 50°F.

2 Apply a microbial-based fertilizer to help the plant recover from environmental stress and strengthen the root zone.

FoxFarm Bush Doctor Boomerang Liquid Plant Fertilizer 1 Pint

0.5 L • 1 pcs

$20

In Stock

3 Monitor soil temperature and moisture levels closely to ensure the plant does not suffer from waterlogged roots during the cold period.

GROWIT Analog Soil Moisture Meter

Water Meters

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Spider Mite Infestation

Small pests like spider mites feed on the underside of Canna leaves, sucking out chlorophyll. This results in a fine, yellowish stippling or mottling pattern across the leaf surface.

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 fall off.

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shopping_cart Recommended Products

1 Apply an organic insecticide to eliminate the spider mite population on the leaf undersides.