Make a note: plant more spring crocus bulbs this fall, especially around where you regularly walk. I remind myself every time I spot my first blooming spring crocus. These 2-3 inch perennial bulbs look best grouped together half an inch apart, forming a little ground bouquet when they're in bloom. Crocus are available in purple, white and yellow, both standard size and extra large. If you have to pick one, select the extra large. It may make it easier to spot them from a window under snow cover!