When the earliest spring bulbs bloom it is easiest to see where more of the same are needed. Blank spaces that will be filled by later-rising perennials or hard-cut shrubs are perfect homes for the early bulbs including snowdrops (Galanthus species), winter aconite (Eranthis hyemalis), netted iris (I. reticulata), or snow crocus (C. minimus). Don't wait, because before you know it the spring bulbs have gone dormant and space has filled. Divide and move those bulbs now.
We learned this lesson from a woman whose trillium display we admired. Leaning on her picket fence one day to tell her what joy we took in seeing her drifts of white trillium, we asked, "So how many trillium did you start with?"
"Five!" She laughed, "I dig and divide them, at least some of them, every year."
"How wonderful! When do you divide them and how many years has it taken to create all this from five plants?"
"I dig them whenever I have time, starting from as soon as they poke through. I split each clump 3 or 4 ways. I've been at it about 15 years."
Watch Janet split the bulbs and pot them as gifts.