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Globe thistle is one of the most elegantly colored plants around. It has fantastical large blue balls of steel blue flowers in midsummer, which would be enough. But making it even more lovely are its large coarse, grayish-green leaves, which set off the flower beautifully.
If you can bear to separate them from the foliage, globe thistle makes a great cut flower, lasting for weeks in the vase. It also dries well. It's bothered by few pests or diseases. If it likes its conditions, it will reseed fairly readily. If you want to prevent this, deadhead flowers shortly after they fade.
The steely blue of globe thistle makes a colorful partner for pinkish-purple coneflower flowers.Coreopsis
The airy yellow flowers of 'Moonbeam' coreopsis team beautifully with globe thistle. Plant them around the base of globe thistle to help cover its foliage that fades away in late summer.Yarrow
The blue of globe thistle pops when paired with creamy yellow 'Moonshine' yarrow and deep yellow 'Cloth of Gold' yarrow.