Blue One 30 grams

Blue one is a soil amendment to enhance the pure blue colour of blue Hydrangeas. Blue One Lowers the pH in a neutral or alkaline soils which results in amazing blue blooms. For astounding blue hydrangea blooms, soil pH should be in the range of 5.0-5.8. 

• Simply sprinkle content of pouch on soil surface in one easy step.
• No need for mixing, measuring or diluting in water