Bees adore them, too. There has been lots of breeding in alliums over the years, so there's a surprising number of varieties available, and not all of them bear the purple globe flower heads we're all ...

Planting Depth When planting allium bulbs, you want to plant them at a depth of two to three times their diameter—typically around 4 to 8 inches deep. Dig a hole that's at least twice as deep as ...

Martin Duncan, head gardener at Arundel Castle, said: "After our world-renowned Tulip Festival in April, the Allium Extravaganza is one of the highlights of our gardening calendar. "With the ...