Spider Lilies sport gorgeous bright red flowers adorned with long, curling filaments (the source of the "spider" moniker). The flowers can be seen from great distances in the garden and last practically forever in a vase. Spider lilies prefer partial shade, especially in hot climates, and well-drained soil. They thrive in Zone 6 if planted in a protected location and mulched heavily in fall. Heirloom, 1750.