We know you are tempted to get out there and start cleaning up your gardens, but...
Spring clean-up sets the stage for a fresh start in the growing season. Gardeners should aim to clean up their gardens when weather conditions are favorable and before new growth begins in earnest.
In Colorado we have wild Spring weather (given this last "lion" of a storm we don't need to tell you this), so waiting for mid-Spring (typically late March/early April) is a good time to start your garden tidying.
Wisdom holds that the best time for Spring clean-up in cold climates is after seven days of 50-degree temperatures.
When cleaning up, be gentle with spring bulb and perennial shoots poking through debris as these are tender and need a little extra care.