Changing hydrangea flower color with coffee grounds is a popular garden hack that could do more harm than good.

Bigleaf hydrangea responds to several light applications of fertilizer during the growing season. A general-purpose fertilizer, such as 8-8-8 or 10-10-10 applied at a rate of 1 pound (2 cups) per ...

Bigleaf hydrangea responds to several light applications of fertilizer during the growing season. A general-purpose fertilizer, such as 8-8-8 or 10-10-10 applied at a rate of 1 pound (2 cups) per ...

Blue flowers will thrive in soil that has a pH of less than 5.5, and a pH higher than 6 will result in pink blooms. Your plant should be at least 2 years old before undergoing a pH change.

Thus the blue hydrangea fanatic will learn that whereas in Kerry only 19 per cent of soils have a pH of greater than 6.2, the corresponding figure in Dublin is 54 per cent.

Bigleaf hydrangea responds to several light applications of fertilizer during the growing season. A general-purpose fertilizer, such as 8-8-8 or 10-10-10 applied at a rate of 1 pound (2 cups) per ...