It’s zero degrees outside my office window and the indoor garden is thriving. Geraniums and petunias that I’m holding over until next year are still only a few inches tall after I cut them back hard. The amaryllis are still blooming one by one, the aloe continues to grow toward the ceiling, the desert roses are thinking of blooming (again), the lemons and limes are ripening, and the Christmas cactus is blooming. What is there to do except keep them watered and let them search for the brightest light from the window? Well, there are a multitude of indoor gardening projects you could be doing this time of year.