Local climate
- USDA hardiness zone
- 8a (10°F to 15°F); 8b (15°F to 20°F)
- Typical temperature range
- Average monthly temperatures in Irmo run from a 37°F low in January to a 92°F high in July.
- Terrain
- Irmo sits northwest of the Fall Line on the Piedmont side of the Midlands, on rolling ground that falls away to Lake Murray.
- Growing challenge
- Midlands soils are typically acidic, and turf wants a pH between 5.8 and 6.5. Most untreated lawns here sit below that, so lime is usually part of the plan rather than an extra.




