How to Grow a Tulip In a Cup of Gravel

Put your tulip bulb or bulbs in a safe place that is cool, dark and dry, such as a vegetable crisper, outdoor trench or cellar, for six to 16 weeks, depending on the species. Richard Jauron of Iowa State University's Department of Horticulture states that most tulip bulbs need to experience a cooling period -- temperatures of 40 to 45 degrees Fahrenheit -- for about 12 to 16 weeks to produce flowers. Keep them watered but not over-saturated or remaining in moisture during this time.

Fill your cup or decorative container to accommodate water and ample root growth, which will be about 2 to 3 inches below the bulbs. Try not to use gravel or crushed stones you find outside, as they may bring unwanted pests or disease into your home.

Place your tulip bulbs on top of the gravel, with the flat side facing down, and cover them with gravel until the tops, or noses, of the bulbs stick out. Jauron notes that the size of your container will determine how many bulbs can be planted, but usually four or five can fit in a 5-inch-diameter pot. Add water until it reaches the base of the bulb.

Put your potted tulips in a cool, low-lit location for a few days until the new shoots look green and healthy and then move your container to an area that is well-lit and about 60 to 70 degrees Fahrenheit. Fill your container with water until it just meets the new shoots and base of the bulb, and maintain this level so that the roots draw from the water and don't remain in it constantly. Jauron notes that tulips typically flower between three and four weeks after their cold treatment and planting.