This is a wonderful annual Salvia (except in frost free zones) compact and richly colored it is easy and trouble free. It is sterile so it will not set seed and that means it will just bloom, and bloom and bloom all season without stopping. You can easily trim to keep the shape or size where you want it, and it will branch out and become even thicker and more full of flowers.
 
Photo courtesy of Proven Winners - www.provenwinners.com