Clear Morning (page 7): "tendrils / of blue clematis, light // of early evening"
Family: Ranunculaceae
Type: Herbaceous or woody, evergreen or deciduous, perennial vine
Blooming period: different cultivars flower from late Winter to Fall
Sun requirement: Sun or partial shade.
Soil requirement: Rich, well-drained soil, shaded roots.
Notes: The color of a clematis depends on the climate: warmer climates are associated with darker flowers.
Sources: [1]