MAUREEN GILMERPhotos: Indigos and smoke trees in the desertMaureen GilmerSpecial to The Desert SunLeucophyllum candidum, or 'Thunder Cloud,' blends near white foliage with indigo blue flowers over a long bloom season.Maureen Gilmer/Special To The Desert SunThe color of the smoke tree and indigo bush flowers are identical but one blooms in spring and the other in summer.Maureen Gilmer/Special To The Desert SunLeucophyllum candidum, or 'Thunder Cloud,' blends near white foliage with indigo blue flowers over a long bloom season.Maureen Gilmer/Special To The Desert SunPsorothamnus arboreus, the desert indigo bush in spring bloom.Maureen Gilmer/Special To The Desert SunA close up of the indigo bush flower with orange anthers visible amidst petals.Maureen Gilmer/Special To The Desert Sun