The answer to 'hardscaping disease' is that hardscaping, such as patios, walkways, and retaining walls, can be susceptible to a variety of issues that can impact their appearance and structural integrity. Common causes include cracking, settling, and the growth of weeds or moss. Symptoms may include uneven surfaces, cracks, and unsightly vegetation growth.
For minor issues, homeowners can often address hardscaping problems through DIY repairs, such as sealing cracks, removing weeds, and applying sealants or pavers. However, for more significant structural damage or complex problems, it's best to call in a professional landscaping or hardscaping contractor to properly diagnose and resolve the issue.