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Allium cepa Reks F1 Brown Leaf Tips
eco Brown Leaf Tips

Allium cepa Reks F1 – Brown Leaf Tips

Why does your Allium cepa Reks F1 have brown leaf tips? Diagnose the cause and fix it with our step-by-step guide.

yard View full Allium cepa Reks F1 care guide
Jump to cause: Nitrogen Deficiency Salt Accumulation (Salinity Stress) Water Stress (Drought or Fluctuating Moisture) Botrytis Leaf Blight

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Nitrogen Deficiency

Onions require high levels of nitrogen for leaf development; a deficiency often manifests as yellowing that progresses to brown, necrotic tips on the outer leaves.

Very Common
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How to confirm: Check if the older, outer leaves are turning yellow before the tips turn brown.
build How to fix it
shopping_cart Recommended Products
1 Apply a nitrogen-rich organic fertilizer to the soil to restore essential nutrients for leaf development.
Back to the Roots Blood Meal & Gypsum (4 Pack)
Back to the Roots Blood Meal & Gypsum (4 Pack)
Organic Fertilizer
$40
Out of Stock
2 Supplement with a liquid seaweed fertilizer to boost nutrient uptake and promote vigorous growth.
FoxFarm Bush Doctor Kelp Me Kelp You Liquid Seaweed Fertilizer 1 Quart
FoxFarm Bush Doctor Kelp Me Kelp You Liquid Seaweed Fertilizer 1 Quart
0.9 L • 1 pcs
$32
In Stock
3 Ensure the soil is well-aerated by mixing in organic perlite to prevent nutrient lockout and improve root health.
Legigo Perlite 20qt
Legigo Perlite 20qt
18.9 L • Perlite
$27
In Stock
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Salt Accumulation (Salinity Stress)

Excessive use of synthetic fertilizers or poor water quality can cause salt buildup in the soil, which draws moisture out of the leaf tips through osmosis.

Very Common
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How to confirm: Examine if there is a white, crusty residue on the soil surface near the onion bulbs.
build How to fix it
shopping_cart Recommended Products
1 Flush the soil thoroughly with large amounts of fresh, low-mineral water to leach accumulated salts away from the root zone.
2 Monitor soil moisture levels closely to ensure you are not overwatering, which can exacerbate nutrient imbalances.
GROWIT Soil Moisture Meter - Blue
GROWIT Soil Moisture Meter - Blue
Water Meters
$12
In Stock
3 Transition to organic, slow-release amendments to prevent future mineral salt spikes in the growing medium.
Back to the Roots Organic Worm Castings 5lb
Back to the Roots Organic Worm Castings 5lb
Worm Castings
$17
In Stock
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Water Stress (Drought or Fluctuating Moisture)

Onions have shallow root systems and are highly sensitive to moisture fluctuations; dry soil causes the delicate leaf tips to desiccate first.

Very Common
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How to confirm: Probe the soil 2-3 inches deep to see if it feels excessively dry during these tip-browning episodes.
build How to fix it
shopping_cart Recommended Products
1 Check the soil moisture levels immediately using a moisture meter to determine if the soil is currently too dry or if the moisture levels are fluctuating too wildly.
GROWIT Soil Moisture Meter SMM-V3
GROWIT Soil Moisture Meter SMM-V3
Water Meters
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2 Apply a consistent watering schedule to maintain even moisture, and consider using a mulch or organic matter to help stabilize soil hydration.
Back to the Roots Organic Worm Castings 5lb
Back to the Roots Organic Worm Castings 5lb
Worm Castings
$17
In Stock
3 Ensure the plant is in a container with excellent drainage to prevent the cycle of waterlogging followed by rapid drying.
FaithLand Fiberstone Planter Gray 8"
FaithLand Fiberstone Planter Gray 8"
8" • Fiberstone
$36
In Stock
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Botrytis Leaf Blight

Though more common in humid conditions, certain strains of Botrytis can cause necrotic brown lesions on the tips and edges of onion leaves.

Common
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How to confirm: Look for fuzzy gray mold growth on the damaged leaf areas during high humidity periods.
build How to fix it
shopping_cart Recommended Products
1 Remove and destroy all infected plant material immediately to prevent the fungal spores from spreading to healthy leaves.
2 Apply an organic fungicide to protect the remaining foliage and manage the blight outbreak.
Bonide Captain Jack's Copper Fungicide 32 oz
Bonide Captain Jack's Copper Fungicide 32 oz
0.9 L • 1 pcs • Organic
$12
In Stock
3 Improve air circulation around the plants and avoid overhead watering to reduce the humidity that promotes Botrytis growth.

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