Platycodon

The name balloon flower makes perfect sense the moment a Platycodon bud begins to swell. Before opening, each flower forms a perfectly inflated little balloon, which gradually unfolds into a broad, star-shaped bloom. Most varieties flower in clear blue or violet-blue, although white and pink forms add softer alternatives, all held above tidy clumps of fresh green foliage.

This is a hardy perennial that suits the front and middle of sunny or lightly shaded borders particularly well. Platycodon plants prefer fertile, well-drained soil and, once settled, are best left undisturbed as their fleshy roots dislike repeated moving. Compact varieties can also be useful in containers, while taller forms sit comfortably among geraniums, grasses and other summer perennials. Balloon flowers attract pollinators and can continue over a generous period when growing conditions suit them.

Bare-root balloon flower plants may be slow to show themselves in spring, but patience is rewarded with a perennial that becomes increasingly established over time. Their unusual buds, clean flower shape and relatively neat habit give Platycodon a distinct personality, making it especially appealing where something familiar enough to combine easily but unusual enough to notice is wanted.