Plant guide:ðŸĨĶ Broccoli
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Growth

Poor or Loose Head Formation in Broccoli

Commonly affects: Brassica oleracea var. italica (Broccoli)

The plant produces a loose, open cluster of small florets rather than the tight, dense head expected, or heads are smaller than the variety should produce.

Potential Causes

  1. 1Heat stress during head formation causing loose, premature flower development
  2. 2Insufficient feeding or water during the critical head-forming period
  3. 3Overcrowded planting competing for light, water, and nutrients
  4. 4Variety naturally producing smaller heads than expected for the growing conditions

Solution Steps

  1. 1Ensure consistent watering and feeding through the head-forming stage
  2. 2Space plants adequately (typically 45-60 cm apart) to reduce competition
  3. 3Time planting for cool weather during head formation
  4. 4Harvest promptly once heads reach peak tightness, since they loosen further with delay

Prevention Tip

Head formation is the most demanding stage for water and nutrients — consistency here matters more than at any other growth stage.

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