Vitax Hydrangea Colourant Changing Pink to Blue - 250g

  • Hydrangeas growing in the presence of iron or alluminium salts which will tend to change colour and produce blue flowers
  • Varieties naturally pale pink tend to blue best, the darker pink varieties turning to muave/blue
  • Best results are obtained with plants growing in acid soil
  • Pale pink varieties tend to blue best
  • Darker pink varieties turn to mauve/blue
  • Treat as per pack instructions