Arachis hypogaea Yellow Leaves - Causes & Fixes

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Nitrogen Deficiency

Nitrogen is a mobile nutrient in peanut plants; when deficient, the plant relocates nitrogen from older leaves to newer growth, causing chlorosis starting with the bottom leaves. This often leads to stunted pod development.

Very Common

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

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shopping_cart Recommended Products

1 Apply a nitrogen-rich organic fertilizer to the soil to replenish the mobile nutrient levels and stop the chlorosis in older leaves.

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

Organic Fertilizer

$40

Out of Stock

2 Supplement with a liquid seaweed fertilizer to boost overall nutrient uptake and support vigorous new growth.

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

0.9 L • 1 pcs

$32

In Stock

3 Monitor soil moisture levels using a moisture meter to ensure the nitrogen-enriched soil remains adequately hydrated for nutrient transport.

GROWIT Soil Moisture Meter - Blue

Water Meters

$12

In Stock

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Waterlogging and Poor Drainage

Peanuts are highly sensitive to anaerobic soil conditions. Excessive moisture displaces oxygen in the rhizosphere, leading to root suffocation and yellowing of the foliage due to impaired nutrient uptake.

Very Common

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How to confirm: Check for standing water in the field or if the soil remains saturated long after rain events.

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shopping_cart Recommended Products

1 Immediately improve soil drainage by adding horticultural perlite to the potting medium to increase aeration and prevent further root suffocation.

2 Repot the plant into a container with superior drainage, such as a Root & Vessel cylinder pot, ensuring the soil mix is well-draining and does not retain excess water.

Root & Vessel Majestic Low Profile Black 8.5"

8.5" • Plastic

$14

In Stock

3 Use a soil moisture meter to monitor the rhizosphere and ensure the soil is allowed to dry out between watering sessions to avoid future waterlogging.

GROWIT Soil Moisture Meter - Blue

Water Meters

$12

In Stock

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Sooty Mold (associated with Aphids/Whiteflies)

Sap-sucking insects excrete honeydew, which promotes the growth of black sooty mold on peanut leaves. This coating interferes with photosynthesis, causing the underlying leaf tissue to appear yellow or chlorotic.

Common

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How to confirm: Inspect the undersides of leaves for small moving insects or a sticky residue and black fungal growth.

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1 Identify and eliminate the underlying pest population by applying an organic insecticide to kill aphids and whiteflies.

Bonide Captain Jack's Neem Oil 32 oz

0.9 L • 1 pcs • Organic

$10

In Stock

2 Gently wash the black sooty mold off the leaves with a soft cloth or water spray to restore the plant's ability to photosynthesize.

3 Monitor soil moisture levels to ensure the plant remains healthy and resilient during pest recovery.

GROWIT Soil Moisture Meter - Blue

Water Meters

$12

In Stock

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Iron Chlorosis

In high-pH (alkaline) soils, iron becomes chemically unavailable to the peanut plant. This results in interveinal chlorosis, where leaf veins remain green while the rest of the leaf turns yellow.

Common

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How to confirm: Look for a pattern where the veins stay distinctively green while the tissue between them turns bright yellow.

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shopping_cart Recommended Products

1 Lower the soil pH by applying an acidifying amendment to make iron more bioavailable to the peanut plant.