Lawn care guide · Melbourne

How often should you mow your lawn?

The honest answer isn't ‘once a week’ — it's whatever keeps you inside the one-third rule. Here's how frequency changes by season and grass type.

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The one-third rule

If you remember one thing about mowing frequency, make it this: never cut more than one-third of the grass blade's height in a single mow. Removing more shocks the plant, exposes the soil, and leaves the lawn thin, pale and vulnerable to weeds. The one-third rule, not the calendar, is what really sets how often you should mow.

In practice that means during fast growth you mow more often to keep each cut light, and during slow growth you mow less. Frequency follows growth rate — which in Melbourne is driven by season.

How often to mow through the year

Spring & early summer

Peak growth. Most Melbourne lawns want mowing weekly — sometimes more during the spring surge — to keep within the one-third rule.

Mid–late summer

Still active but heat-stressed. Weekly to fortnightly, with the blade raised so longer leaf shades the soil.

Autumn

Slowing down. Stretch to fortnightly, keeping the lawn clear of fallen leaves.

Winter

Warm-season lawns are largely dormant — every few weeks, or only as needed. Cool-season lawns may want an occasional tidy.

Frequency by lawn type

Vigorous grasses need mowing more often to stay neat. Kikuyu is the fastest of the common Melbourne lawns and rewards a tight schedule in summer. Couch is moderately fast on full sun. Buffalo grows a little slower and tolerates a fortnightly rhythm well. Zoysia is the slowest and needs the least mowing of all.

This is why a single ‘weekly’ habit rarely suits a lawn year-round. Matching frequency to both the season and the grass is what keeps a lawn genuinely healthy rather than just short.

Signs your timing is off

Mowing too infrequently shows up as clumping, scalped patches where you finally cut too much at once, and a pale lawn that takes days to recover. Mowing too often — rare, but it happens — can stress the lawn and compact the soil from constant traffic. The sweet spot is a light, regular cut that never takes more than a third.

If keeping up with the surge is the problem, a regular fortnightly service through the growing season is usually all it takes to stay ahead of it.

Mowing frequency questions

How often should I mow my lawn in summer?

In a Melbourne summer most lawns want mowing weekly to fortnightly, with the blade raised. Growth is strong but heat stress is real, so keep each cut light and never remove more than a third of the leaf.

Can you mow your lawn too often?

It's uncommon, but yes — mowing far more than the grass needs adds stress and the foot or machine traffic can compact soil over time. The goal is a light, regular cut matched to how fast the lawn is actually growing.

What is the one-third rule?

The one-third rule means never removing more than a third of the grass blade's height in a single mow. Cutting more shocks the plant and exposes the soil, leaving the lawn thin and weed-prone.

How often should buffalo lawn be mowed?

Soft-leaf buffalo grows a little slower than kikuyu and usually suits a weekly schedule in peak spring growth, easing to fortnightly through summer and much less often in winter.