Why cutting height matters more than cutting frequency
Cutting a lawn too short is the single most common way Sydney homeowners damage their own turf. Every cut removes leaf area the plant needs for photosynthesis, and taking too much at once shrinks the root system and opens bare soil to sunlight — exactly what weeds like bindii, winter grass and clover are waiting for.
The general rule is to never remove more than about a third of the leaf blade in a single cut. Mow more often in the growing season rather than scalping back to catch up.
Height by grass type
Buffalo generally holds up best at 40–60mm, and closer to 70mm in shaded sections. Kikuyu sits comfortably between 30–50mm but needs more frequent mowing to keep pace with its growth rate. Couch can be held tighter, around 15–30mm, but only when it's well fed, watered and in full sun.
Adjusting through the seasons
Raising the deck slightly through summer reduces heat and moisture stress on the lawn. Alternating mowing direction between visits stops turf laying over into a grain and prevents wheel ruts forming in soft ground.