I’d almost forgotten the handful of leftover Iris reticulata bulbs I stuck in one of the windowboxes that line my driveway last fall. The windowboxes are changed out seasonally and serve as a sort of botanical display case. So it was with true surprise that I did a double-take yesterday. Where the previous day there were nothing but white Cool Wave pansies pushing their teddy-bear faces up toward the sun, here were dainty purple trumpets singing their heads off well above the pansies and well ahead of schedule. Who’d have thought I’d be looking at this cool combination in mid-March in Zone 5 Central Iowa?