Savoy Cabbage Convoy F1 Brown Leaf Tips - Causes & Fixes

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Salt Accumulation (Salinity Stress)

Accumulation of fertilizers or minerals in the soil leads to high osmotic pressure, causing moisture to be pulled out of the leaf margins. In brassicas like Savoy cabbage, this typically manifests as necrotic brown tips.

Very Common

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How to confirm: Flush the soil with heavy amounts of fresh water and check if the symptoms stabilize after a few days.

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1 Flush the soil thoroughly with large amounts of fresh, low-mineral water to leach out accumulated fertilizer salts from the root zone.

2 Monitor soil moisture levels closely to ensure the soil remains well-drained and does not become waterlogged during the flushing process.

GROWIT Analog Soil Moisture Meter

Water Meters

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3 Amend the soil with organic matter or perlite to improve drainage and prevent future salt buildup.

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Potassium Deficiency

Potassium is vital for osmoregulation and enzyme activation in cabbage; a deficiency disrupts water movement to the leaf extremities, resulting in marginal browning. This often occurs when the plant's rapid growth outpaces nitrogen-heavy fertilization.

Very Common

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How to confirm: Examine if the browning follows a pattern of yellowing (chlorosis) moving into brown necrosis along the edges.

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shopping_cart Recommended Products

1 Apply a potassium-rich fertilizer to restore essential nutrient levels and support osmoregulation.

FoxFarm Bush Doctor Kelp Me Kelp You Liquid Seaweed Fertilizer 1 Quart

0.9 L • 1 pcs

$32

In Stock

2 Ensure the soil is well-aerated and contains enough organic matter to facilitate nutrient uptake.

Espoma Organic Potting Soil Mix

15.1 L

$22

In Stock

3 Monitor soil moisture levels regularly to prevent further stress on the leaf extremities.

GROWIT Soil Moisture Meter - Blue

Water Meters

$12

In Stock

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Drought Stress / Irregular Watering

Savoy cabbage has large, textured leaves with high transpiration rates; inconsistent soil moisture causes the tips to desiccate and die back. Rapid fluctuations between bone-dry and saturated soil exacerbate this tissue death.

Common

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How to confirm: Insert a finger 2 inches into the soil to determine if the substrate is drying out too quickly between waterings.

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shopping_cart Recommended Products

1 Check the soil moisture levels regularly using a moisture meter to ensure the soil remains consistently moist but not waterlogged.

GROWIT Soil Moisture Meter - Blue

Water Meters

$12

In Stock

2 Apply a consistent watering schedule to prevent the soil from drying out completely between sessions, which helps mitigate tip desiccation.

Chapin 48000 0.5G Watering Can

2.3 L • Recycled Plastic

$12

In Stock

3 Mulch the base of the cabbage with organic matter to help retain soil moisture and regulate temperature fluctuations.

Back to the Roots Organic Worm Castings 5lb

Worm Castings

$17

In Stock

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Wind Scorch

The crinkled, textured leaves of the 'Convoy F1' variety have high surface area which can lead to physical desiccation from hot or dry winds. This mechanical stress causes the delicate leaf margins to turn brown and brittle.

Common

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How to confirm: Observe if the browning is localized to leaves most exposed to prevailing wind directions.

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shopping_cart Recommended Products

1 Provide physical protection from wind by using a windbreak, such as a garden fence, or move the plant to a sheltered location.

2 Increase local humidity around the leaves to prevent further desiccation by using a fine mist spray.