One of the finest white variations on the usually-blue-flowering agapanthus, sending skyward its big pure-as-heaven white flower globes in the dog days of midsummer, just when the garden needs a jolt of freshness. Another gift from Holland, White Heaven was discovered in a field of blue agapanthus grown for the cut flower market. Like all agapanthus, this one thrives in full hot summer sun and any well-drained soil. Great in containers where not winter-hardy, it can be brought indoors to a cool, bright place to rest until the following summer.