On-ground speakers can be used to provide audio in outdoor areas where traditional on-wall speakers may not be possible or desirable. They can be positioned in flower beds and borders to provide discreet audio solutions.
Spike models are compact speakers which are mounted on ground spikes. Due to their compact size, they are often paired with buried subwoofers to create high quality discreet outdoor audio systems.
Rock models are architectural speakers designed to look like... you guessed it... rocks. These can provide great sound quality, as well as creating a natural look when hidden among plants. Most rock speakers are available in different rock finishes to help them blend into the environment.
It should be noted that most standard on-wall outdoor speakers can also be used on-ground if mounted to a suitable surface.