Although typically associated with a lovely pale shade of purple, lavender flowers come in a variety of colors ranging from pure white to deep blue, with plenty of pink and purple shades in between.

They are most often thought of as indigo-blue but are also white, purple and pink. Agapanthus stand up tall and add a flamboyant touch to any mid-summer garden.

Acidic soil (lower pH) will produce blue flowers, while alkaline soil (higher pH) will yield pink blooms. Soil test kits are readily available for purchase on Amazon for £12.99 or at B&Q for £6. ...

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 ...