Hydrangeas are nature’s mood rings, offering a mesmerizing spectrum of colors that bring life and vibrancy to any garden.

Summer Crush bigleaf hydrangea (Hydrangea macrophylla 'Bailmacfive') is a winner. Mopheads bloom in either neon purple or raspberry red—perfect for brightening up the yard in a flash.

But, for most people growing Hydrangea macrophylla (mophead) or Hydrangea serrata (Mountain hydrangea) the answer is “yes”. Hydrangea blooms are sensitive to soil acidity, which makes some ...