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10 Reasons Why Your Zucchini Leaves Are Turning Yellow
Rizzle
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20 minutes ago
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Lifestyle
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00:00
10 Reasons Why Your Zucchini Leaves Are Turning Yellow
00:03
Natural Aging of Lower Leaves
00:06
Lower, oldest leaves naturally yellow as nutrients relocate to new growth and fruits, so trim them to improve airflow.
00:14
Overwatering and Root Rot
00:16
Waterlogged soil starves roots of oxygen, inviting rot pathogens, so improve drainage and water deeply but infrequently.
00:25
Soil pH imbalance
00:27
Alkaline soils lock up nutrients like iron and manganese, so test pH and amend with sulfur to restore availability.
00:36
Pest Infestations, like Squash Bugs
00:38
Squash bugs and cucumber beetles cause yellow blotches, so remove eggs, handpick pests, and encourage predators with companion plantings.
00:49
Iron Chlorosis
00:50
High pH or compaction reduces iron uptake, causing intervinyl yellowing,
00:55
So apply chelated iron and correct root zone conditions.
01:00
Compacted, poorly draining soil
01:02
Compacted clay limits aeration and drainage, stressing roots and yellowing leaves.
01:08
So loosen soil with compost and coarse amendments.
01:12
Nitrogen Deficiency
01:13
Low nitrogen yellows older leaves first, so side dress with balanced fertilizer or composted manures to restore vigorous foliage.
01:23
Transplant Shock
01:24
Transplanting contemporarily yellow leaves as roots adjust, so harden off seedlings and water gently to minimize shock.
01:33
Underwatering Stress
01:35
Inconsistent moisture or drought yellows and curls edges, so water deeply, then mulch to conserve soil moisture consistently.
01:45
Powdery Mildew
01:46
Powdery mildew starts white and leads to yellowing, so remove affected leaves, improve airflow, and use milk spray treatments.
01:55
Watery Mildew
01:56
Watery Mildew
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Watery Mildew
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Watery Mildew
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Watery Mildew
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Watery Mildew
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Watery Mildew
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