Homeowners may have low spots unsuited for conventional gardens because of ponding or excessive erosion from runoff. Raised beds rise above these, with frames as a foundation. Gravity becomes an ally, not only in avoiding soggy soils but in using a problem area. The gardener shares some benefits from raised beds as well. First, and most important, is that timely planting and harvesting are easier.
Most people avoid working traditional gardens in rainy weather to avoid compaction and muddy feet.
But raised beds are designed for walking around, not in. So there's no reason for mud to delay operation. Spaces between beds may be left in sod, mulched or even paved with stone or brick. Pest control becomes easier in raised beds, too. If burrowing rodents abound, line the bottom of the bed with poultry wire or hardware cloth.