Harvesting saffron crocuses is a delicate and labor-intensive process, but with the right knowledge and techniques, you can successfully cultivate and harvest this valuable spice in your own garden. Understanding Saffron Crocuses The Crocus sativus is a perennial flower that blooms in the fall. Each flower produces three vivid crimson stigmas, which are the saffron threads. The plant thrives in regions with hot, dry summers and cold winters, making it well-suited for Mediterranean climates. Saffron crocuses are also adaptable and can be grown in various parts of the world with the right care. Planting Saffron Crocuses The journey to a successful saffron harvest begins with planting the corms (bulbs) correctly.