Saffron threads come from the female portion of the crocus flower (Crocus Sativus). Although saffron is expensive to buy, you can grow your own supply if you have some patience. After an initial planting of ten to twenty corms (much like bulbs), a few flowers will multiply into a good saffron harvest. Less than twenty plants will give you a good start on an ample yearly supply of saffron.
Although the crocus is famous for being one of the first flowers of spring, the saffron crocus is a fall bloomer. Crocus Sativus is hardy in zones six through nine, and thrives in full sun with rich, well-drained soil. It also prefers a sheltered location. Avoid windy spots, or areas that stay wet in the heat of summer, around downspouts or at the bottom of slopes. Purchase corms and plant them four inched deep and about four to six inches apart in late spring to early summer. A favorite of gophers, crocus should be protected with a mesh enclosure or other varmint resistant device. Years where there is a long, hot summer will give you the best harvest.
The saffron crocus will send up flowers in late September to early October that will last for about three weeks. A good bloomer, look for upright, spiky lavender blossoms of about four to five inches with long red stigmas. These red stigmas are the saffron.
After what can be a delay of months, the crocus will produce narrow grass-like leaves that will generate nourishment for the plant. These leaves will persist for 9 to 12 weeks and then vanish until the next blooming. Be careful not to destroy the leaves prematurely.
The saffron crocus will grow additional corms from the mother plant. After three years, the corms can be dug up (during the summer when the plant is dormant), divided, and replanted. Break off the smaller outer corms from the mother plant and replant them in a separate location or at a distance of four to six inches from other plantings. Periodic thinning of the corms, at lease once every six years, will keep your crocus plants healthy and blooming well.
Three red stigmas occur in each bloom and should be harvested in the morning when the flowers have fully opened. Carefully remove them from the flower with tweezers and dry them in a dehydrator or in a warm dark location. To avoid spoilage, give your saffron plenty of time to dry and store it in a dark, tightly capped container.
Now that you have a reliable supply of saffron, you can explore additional uses for this delicately flavored and useful spice. Beyond the traditional rice dishes, saffron can be used in meat and fish recipes, as well as in soups, breads, and cakes. It makes a relaxing addition to tea, and can help settle an upset stomach.
Historically, saffron was used as a fabric dye, hair dye, an aphrodisiac, and as an ingredient in perfume. In your kitchen, homegrown saffron can help you create memorable meals at a fraction of the cost of its commercially available counterpart.