After blooming, most indoor bulbs will be spent and won't flower again. But if you want to reward their service instead of heartlessly tossing them onto the compost pile: Wait for the leaves to die back naturally. Then plant in the garden and feed them an organic fertilizer. (Narcissus and daffodil bulbs are more likely to respond, and bloom again in the garden, than hyacinths.) Image via Julia's Vita.