Fall bulbs are hardy bulbs that are planted in the fall and bloom in the spring. They are sometimes referred to as spring bulbs as well. Hybrid bulbs are bulbs that have been genetically altered to produce a new plant. Most fall bulbs have hybrid varieties, including daffodils, tulips and crocuses. Even though there are many different kinds of fall hybrid bulbs, there are some general planting instructions that apply to most.
Plant fall hybrids in the fall, before the ground freezes. While you can plant them anytime--as long as the ground is not frozen solid--a fall planting will usually yield blooms the first spring.
Choose a planting sight, generally in full sun. The soil should be well draining, so add some organic matter such as compost or peat moss to help improve drainage if necessary.
Dig holes to a depth appropriate to their kind. For example, tulip hybrids, like natural tulips, should be planted 4 to 8 inches under the soil's surface.
Space the fall hybrid bulbs according to their kind. For example, the tulips as mentioned above should be spaced about 4 to 6 inches apart, but hybrid daffodils should be planted at least 6 inches apart--the same as natural daffodils.
Water the plant well after backfilling the soil. Firm the soil to get rid of the air pockets.
Mulch over your planting site for all hybrid bulbs. This will help maintain moisture and keep the bulbs warm during the winter months.