Compacted soils can flood and also be susceptible to drought, since water runs off rather than infiltrating. You can repair compacted soil by rebuilding its spongy structure. Strategies for restoring overly compacted soils: Top-dressing planting beds with several inches of compost will improve lightly compacted soils.
How can hard soil become soft soil?
Adding compost will soften your soil and improve soil structure, compost also adds nutrients to your soil that your plants need. Compost does a good job of binding clay particles together (better than gypsum). This results in improved drainage and aeration as well as softer and lighter soil.
What happens when soil is compacted?
Soil compaction occurs when soil particles are pressed together, reducing pore space between them (Figure 1). Heavily compacted soils contain few large pores, less total pore volume and, consequently, a greater density. A compacted soil has a reduced rate of both water infiltration and drainage.