· some of the most common errors that can happen when using gravel include skipping the base layer, using the wrong size or type of gravel , neglecting proper edging, not considering drainage,. There are two primary types of loose stone: · avoid these common mistakes when adding gravel in your garden or landscaping for better-looking and longer-lasting results. · below are some of the most common mistakes contractors make with gravel , along with expert insight from fsi landscape supply on how to avoid them. Smooth and rough. The importance of ground preparation is often overlooked when laying gravel. · here are 25 common gravel goofs you’ll definitely want to avoid! Ignoring ground preparation. · some of the most common gravel landscaping mistakes include using a thin layer of gravel , shallow digging, pouring gravel directly onto bare soil, or skipping essential prep work. · landscaping your yard takes a lot of thought and planning. Smooth stones, like pea gravel and river rock, have rounded edges that resist packing. Here are the most common mistakes you should avoid when using gravel in your garden. But despite all its benefits, there are some potential mistakes and problems that are commonly overlooked when using gravel for a patio. Failing to level the area can lead to uneven surfaces that are both unsightly and hazardous. Using the wrong type.