Ideal Soil pH for Chamomile

Chamomile’s Optimal pH Range and Its Importance

Chamomile thrives in a soil pH range of 5.6 to 7.5, preferring slightly acidic to neutral conditions. This pH range is crucial for Chamomile’s growth, flower production, and essential oil content. Within this range, Chamomile can efficiently absorb essential nutrients, particularly phosphorus and potassium, which are vital for its abundant daisy-like flowers and aromatic compounds. The plant’s adaptability to various soil types contributes to its widespread cultivation for medicinal and culinary uses. While Chamomile can tolerate a wider pH range (5.0 to 8.0), maintaining the ideal range ensures optimal performance and oil quality. In highly acidic soils (below 5.0), Chamomile may experience reduced nutrient availability, especially calcium and magnesium. In alkaline soils (above 7.5), the plant might suffer from iron and manganese deficiencies, affecting its growth and flower production.

Adjusting Chamomile’s Soil pH

Lowering Soil pH:

  • Sulfur
  • Aluminum sulfate
  • Iron sulfate
  • Pine needle mulch

Raising Soil pH:

  • Agricultural lime
  • Dolomitic lime
  • Wood ash (in small amounts)
  • Bone meal

Testing Soil pH for Chamomile Cultivation

  • pH test strips
  • Digital pH meter
  • Soil testing kit
  • Professional lab analysis
  • Colorimetric soil test