Globe-shaped allium blooms float high above other plants, flaunting their colorful starbursts. And in cut arrangements, the ornamental onions can be just as delightfully impudent. To play this up, trim their stems short and display them one by one.
Here, we've crowned crystal goblets with (left to right) Allium christophii, another A. christophii, A. 'Globemaster,' and A. hollandicum -- spotlighting each stellar cluster.