For A Natural Effect: Bulbs look best in clumps or drifts. To get a natural looking effect, either dig a large area and plant several bulbs at once or simply toss the bulbs into the air and dig holes and plant where ever they fall. You’ll be surprised how well this works.
Mark Your Plantings: To make sure you don’t disturb your bulbs by trying to plant something in the same spot, mark where and what you have planted.
Spring Care: When your bulbs have finished flowering, cut back the flower stalks to ground level. It can get ugly, but let the foliage of your flowering bulbs dieback naturally. Resist the temptation to cut it back while still green, but floppy. The bulb needs this time to photosynthesize and make food reserves to produce next year’s flowers.
To Divide Bulbs: Many bulbs spread and increase, making the original planting over crowded. If your bulbs are not flowering as well as they used to, this is probably the case. If you wish to move or divide your flowering bulbs, the safest time is when they enter their dormant period. This is usually just after the foliage completely dies back. Dormancy is brief; even though nothing is happening above ground, so don’t put this task off.