Perforating soil to allow air, water and nutrients to reach grass roots. (You can rent aerators from the hardware store— the core variety is most effective.)
Removing thatch (the buildup of dried cut grass leaves) with a power rake, or dethatcher.
The correct name for narrow-leaved grass that's grown as a lawn.
Adding fresh grass seed to an existing lawn, usually to fill in sections that have been damaged by diseases, insects or animals.
Narrow-leaved grass species that are drought-tolerant and typically don't need frequent mowing.
A downward-growing root (as opposed to a fibrous root system). Thistle and dandelion roots are prime examples.