This was, as most gardeners will know, because Hydrangea macrophylla responds to acidic soil by producing blue flowers, whereas a chalky, alkaline soil will turn them bright pink and in a neutral ...

Initially, I thought it was just the simple resplendence of the brushstrokes, the dense blue nucleus tipped with icy white. But there’s something more to this flower — something about the very ...

Brewed like a tea, the wild blooms create a bright blue, edible dye … that can change colour! "You infuse the flowers in water to get an intense colour," explains Naomi Duguid, a James Beard ...