Coaxing bulbs to bloom indoors before spring is called forcing. The leafless, winter-dormant bulbs are chilled and then gradually warmed indoors to convince them to send up leaves and flowers. Some bulbs are given a cold period (35 to 55 degrees) outside, in a cold garage or refrigerator and then brought inside to a warm, sunny location where they bloom. Warm-climate Paper white narcissus (Narcissus tazetta), Soleil d’Or, Chinese sacred lily (N. tazetta var. orientalis), and Amaryllis (Hippeastrum) can be grown inside without a chilling period. Plant vendors, such as Southwood Nursery (9025 S Lewis, Tulsa) sell pre-chilled bulbs. Select the largest bulbs you can find since they have the most food available to produce flowers. At this time of year, pre-chilled bulbs are identified as good for forcing. Other bulbs that are often forced for indoors flowers include tulips, hyacinths, grape hyacinths, crocus, snowdrops, scilla, muscari, and anemones. Paper whites, hyacinth and c