Veronica ‘Mona Lisa Smile’ PPAF (Spike Speedwell) The famous painting of the Mona Lisa has intrigued art enthusiasts for centuries, especially her enigmatic smile. There’s no mystery here, though, ‘Mona Lisa Smile’ will perform beautifully in your garden, producing paintbrush-like, long spikes of rosy purple flowers. This is one of the first speedwell to flower, starting about two weeks earlier than ‘Very Van Gogh’. Its flowers cover most of the terrific, rounded habit. Height: 22-24in Spread: 22-24in Zones 4-9