Not only do plants flower in a certain order, but they leaf out in a certain order, too, and some start to leaf even while frost is still a threat.  Winter flowers like hellebores, crocuses, and daffodils hog the limelight in March, but our color-starved eyes are also glad to see new foliage.  Look for the following early leafers to brighten up the landscape while other plants are still sleeping:

Many Rosaceae (rose family) plants get off to an early start, like this rose stretching out in the March sunshine…