I bought three varieties: daffodils, crocus (croci?) and tulips. My backyard is small, so when I noticed that each bulb recommended being planted at a different depth, I decided to planted all three varieties, right. on. top. of. each. other. Big fat daffodil bulbs first at 5-6 inches. Then (trying to remember exactly where the daffodils were) medium tulip bulbs at 3-4 inches. Then teeny tiny crocus bulbs at 1-2 inches. I added some bonemeal and Osmocote (a slow-release fertilizer brand I like) to the bed.
What is it about early bulbs? Even as days get longer and warm to 40 or 50 degrees, I feel certain spring will never come. But then I see a bulb. And-because I am a biologist's daughter-I believe those little brown nuggets of life know more than I do about what season is coming when. Happy Spring!