WORTH £15
PHOTOS: GETTY/ALEX MANDERS, VAIVIRGA; VISIONS BV/PLANTIPP
Allium ‘Purple Sensation’
An eye-catching allium, with showy, intense purple, star-shaped blooms that form globes held high on upright stems in June.
Excellent for cutting, the blooms will last two weeks in a vase. Winner of an RHS Award of Garden Merit for its outstanding garden performance.