Every fall-planting advocate mentions it. In the fall, the gardener has far more time to get work done for two reasons. First of all, there is a longer period and far more "good days" for planting in the fall than during the tricky weather in spring. Secondly, the gardener always has more time during the fall than during the spring rush to get everything done after winter. (Many wildgardeners combine wildflower seed planting with fall bulb planting, and that's always a good idea. The times for both are identical.)