"Flat-growing" can be expanded to a number of synonymous terms that describe plants with a low, sprawling growth habit. Some of these include "prostrate," "creeping," "ground-hugging," "mat-forming," and "carpet-like." These plants are ideal for covering large areas of ground, as they spread out horizontally rather than growing upwards. They can be used to create low-maintenance lawns, fill in gaps between other plants, or provide erosion control on slopes and hillsides. Some common examples of flat-growing plants include creeping thyme, Irish moss, and sedums. Whether you're looking to add some visual interest to your yard or simply need an effective ground cover, flat-growing plants are an excellent choice.