Squat.
Bushy if pinched.
Able to produce a solid cola tip -to- dirt if not.
Leaves that are thick and stiff and could handle a touch of frost if they had too.

For examples, I've seen sweet tooth plants with that GREAT leaf stiffness... BlueMoonRocks and Yeag's MTF with a cola down to the dirt... and strains with NL in their recent heritage tend to have above average toughness.