Three colors - on one plant - at once! Czechmark® weigela are a new series that showcases just how much flower power this old-fashioned favorite is capable of. Czechmark Trilogy™ is an absolute dazzler that blooms in late spring with three colors at once - white, pink, and red flowers all on one plant! There aren't many other spring flowering shrubs that offer you so much color for so little effort. Blooms on old wood.