Spring flowering bulbs can be planted anytime in the fall after temperatures cool down, but before the ground freezes. Bulbs need to establish strong root systems before winter sets in. The end of September or early October is a good time to plant narcissus, allium and small bulbs. Tulips can be planted in groups or clumps as long as the ground can still be worked before freeze-up.
The rule of thumb is to plant bulbs at a depth that is 3 times their height. For example, if a daffodil bulb is approximately 2-inches tall, dig a hole 6-inches deep. Smaller bulbs such as miniature daffodils are generally planted 3- to 5-inches deep.
Bulbs like well-drained soil and adding a balanced fertilizer of 10-52-10 will give them a good start in the spring. When planting any type of bulb, position it so that the peaked end points up. That’s where flower stems will emerge. The flatter, usually larger end goes at the bottom of the planting hole. If you can’t tell top from bottom, plant the bulb on its side.
Most bulbs need from 4 to 6 hours of daily sunlight. Some varieties (Spanish bluebells and daffodils) are more shade tolerant than others. When planting under trees select shade tolerant varieties and site them at the drip line (edge of the tree canopy) rather than right under the tree.
If you want the bulbs to bloom again the following year, the name of the game is to keep the leaves green as long as possible. This gives the foliage time to recharge the bulb for next year’s blooms. For the best results, wait about eight weeks after the blooms have faded to remove the foliage. Clip the leaves approximately 2 inches from the ground.
Planting bulbs is an exciting and easy activity and reaps rewards each spring. To guarantee success, you just need to follow a few basic principles outlined above.
The most essential step is to ENJOY!
— Debra Thompson