Tulipa tarda bulbs, often called late tulip, produce stems with a cluster of 3 to 6 upward-facing white flowers with a yellow eye on each one. You can play a big part in how well your tulip bulbs ...

The roots are tuberous bulbs that multiply quickly if conditions are right. The clusters of trumpet-shaped flowers in white, ...

Summersweet ( Clethra alnifolia) blooms in the late summer, says Irish-Hanson, but it's wise to plant it during the spring.