Flowers turn pink or red in alkaline soil (pH above 7). In slightly acidic or neutral soil (pH 6 to 7), you may get a purple ...

To gradually change flower color from pink to blue, broadcast one-half cup of wettable sulfur per 10 square feet and water. To make the flowers pink, broadcast a cup of dolomitic lime per 10 ...

For pink blooms, aim for a more alkaline soil with a pH around 6.0 to 6.5, while blue flowers require more acidic soil, ideally between 4.5 and 5.5. For purple hydrangeas, you need a balance so ...

Hydrangeas will turn ‘gorgeously blue’ and ‘grow like crazy’ with 1 natural kitchen scrap To transform the colour of your hydrangea blooms and spur on more flowers, gardening enthusiasts ...