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Why Meyer Lemon Fruits Turn Black and Hard in Containers

A potted Meyer lemon produced mostly black, hard, pea-sized fruits with only 1-2 developing normally. The owner fertilized only twice this year versus monthly March-August last year.

Primary Cause

Insufficient water is the likely culprit—container citrus needs consistent moisture to develop fruit. Irregular watering causes fruit abortion and hardening. Additionally, avoid Miracle-Gro fertilizers, which contain salts and chlorine harmful to citrus.

Corrections

Increase watering frequency and consistency. Use a citrus-specific, slow-release fertilizer. Lemons are naturally disease-resistant, so cultural issues are usually responsible for fruit problems.

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