No. 10 -- Veronica (Speedwell)

It took a few years for folks to catch on to the benefits of Veronica. They really don't look that great at the nurseries in pots but when you see them at their maturity in someone's garden, you're hooked. Colors of whites, pinks and purples, late and long bloomers, from eight inches to about 30 inches tall, and very well behaved in the gardens, are a few reasons this one is moving up the charts Pictured is Veronica 'Eveline.'