Yucca filamentosa 'Excalibur' forms rosettes of spiky, strap-like leaves coloured blue-green to powdery blue.

Yucca filamentosa 'Hofer's Blue' forms rosettes of spiky, strap-like leaves coloured in a bold silver-blue.

Yucca rigida is a dramatic, trunk-forming, hardy species with a crown of stiff, sword-like, powder blue leaves.

Yucca rostrata has a beautiful, spherical powder blue crowns. It will develop a trunk and form an upright, unbranched tree.

'Sapphire Skies' is a super hardy Yucca rostrata with domes of excellent baby blue foliage.

Zaluzianskya or night phlox has deep pink buds opening to night-fragrant white flowers in multitudes for months. A Phoenix Perennials best seller.