As with so many other plants bought in greenhouses, I didn’t think this veronica speedwell would last. I stuck it in the ground and expected one or two seasons of meagre blooms. Well, fifteen years later and it’s edging almost every flower bed around the house. The waxy, gem-like green foliage looks sculpted and neat well into the fall. Veronica gentian flowers are tall and delicate, they sway in every breeze. It’s like watching a ballet dance when they bloom.