While most bulb varieties can be forced, best results are obtained by selecting varieties which are recommended for forcing. Select large, firm bulbs. Small bulbs may bloom poorly, if at all. Potting Mix Commercial potting mixes can be purchased at garden centers and nurseries. Choose a high quality potting mix that drains well.
Gardeners can also prepare their own medium by mixing equal parts garden soil, peat, and perlite.
Pasteurize homemade soil mixes before use. Containers Bulbs can be forced in plastic, clay, or ceramic containers. Almost any container can be used as long as it has drainage holes in the bottom. If the containers have been used previously, wash them in soapy water and then rinse in a 1 to 9 solution of chlorine bleach and water. The bulbs should be planted closely together.