How Often Should You Mow Your Lawn in Melbourne?

One of the most common questions we get from homeowners across Diamond Creek, Eltham, and the wider Nillumbik area is simply: "how often should I be mowing my lawn?" It seems straightforward, but the answer depends on several factors - the season, your grass type, how much shade your lawn gets, and what kind of finish you are after.

Getting your mowing frequency right is one of the simplest things you can do to improve your lawn's health and appearance. Mow too often and you stress the grass. Mow too infrequently and you end up scalping it, which opens the door to weeds and disease. Let us break it down season by season.

Spring (September - November): Peak Growth Season

Spring in Melbourne means your lawn wakes up and goes into overdrive. Soil temperatures rise, rainfall returns, and grass growth accelerates rapidly - especially in October and November when warm-season grasses really take off.

During spring, most lawns need mowing every 7-10 days. If you have a fast-growing variety like Kikuyu, you might even need to mow more frequently during the peak growth flush. This is the time of year where a regular mowing schedule pays for itself, because letting the lawn get away from you in spring means a heavy, stressful cut to catch up.

Spring is also the ideal time to gradually lower your mowing height by 5-10mm. This encourages lateral growth (tillering), which produces a thicker, denser lawn heading into summer. Just remember to make the reduction gradually over several mows - never drop the height dramatically in one go.

Summer (December - February): Slow Down and Raise the Height

Melbourne summers bring hot days, dry conditions, and often water restrictions. During this period, grass growth slows significantly, and your lawn enters a kind of survival mode, conserving energy and moisture.

Most lawns only need mowing every 14-21 days during the peak of summer. Some barely need cutting at all through January if it is particularly hot and dry. The key during summer is to raise your mowing height - add 10-15mm to your usual cutting height. Taller grass:

• Shades the soil surface, reducing moisture evaporation
• Develops deeper root systems that access water further down
• Is more resilient to heat stress and foot traffic
• Naturally crowds out weeds that need sunlight to germinate

We recommend keeping most Melbourne lawns at 50-60mm during summer (compared to 35-45mm in spring). It might look slightly longer than you are used to, but the lawn will be noticeably healthier, greener, and more resilient as a result.

Autumn (March - May): Recovery and Preparation

Autumn is when your lawn starts to bounce back from summer heat. Cooler temperatures, shorter days, and the return of regular rainfall create ideal growing conditions. Many warm-season grasses put on good growth in March and April before slowing down as temperatures drop.

You will likely need to mow every 10-14 days through autumn. This is also the perfect time for broader lawn care tasks: fertilising, aerating compacted areas, overseeding bare patches, and top-dressing to level uneven areas. A healthy lawn going into winter is far more resilient and will green up faster in spring.

Gradually return your mowing height to its standard setting during early autumn, then raise it slightly again as you head into winter to protect roots from cold.

Winter (June - August): Minimal Maintenance

Growth slows to a crawl in Melbourne's winters. Warm-season grasses (Buffalo, Kikuyu, Couch) go semi-dormant and may barely grow at all in the coldest months. Cool-season grasses (Fescue, Ryegrass) will continue to grow slowly but not at anything like their spring rate.

Most lawns in our service area only need cutting every 21-28 days in winter, sometimes even less. You might go six weeks between mows in the dead of winter without any real issue. Keep the height slightly raised (5-10mm above your standard) to protect root zones from frost.

A few winter mowing tips:

• Only mow when the grass is dry - wet grass tears rather than cuts cleanly
• Mow in the middle of the day when frost has melted and the sun is warming things up
• Do not mow if there has been heavy rain and the soil is waterlogged - you will compact it
• Keep your mower blades sharp - dull blades tear grass, creating entry points for disease

The One-Third Rule: The Golden Rule of Mowing

Regardless of season, the most important rule is this: never remove more than one-third of the grass blade in a single mow.

If your lawn is at 90mm and you cut it to 30mm, you have removed two-thirds of the leaf. This shocks the plant, massively reduces its ability to photosynthesise, depletes carbohydrate reserves, and weakens the root system. The visible result is brown patches, stressed grass, and an open invitation for weeds to establish.

If your lawn has gotten away from you (it happens to everyone), bring it back down gradually over 2-3 mows rather than scalping it in one hit. Your lawn will thank you.

Mowing Frequency by Grass Type

Different grass varieties grow at different rates, which affects how often they need mowing:

Buffalo (Sir Walter, Palmetto, Sapphire): Moderate growth rate. Mow at 35-50mm height. Weekly to fortnightly in peak season, monthly in winter. Buffalo is the most common lawn type in our service area and generally very forgiving.

Kikuyu: Fast growing and aggressive. Mow at 30-40mm. Needs frequent cutting in warm weather - sometimes weekly or even more often in spring. Left too long, Kikuyu develops a thick thatch layer that is difficult to manage.

Couch: Fast growing in warm weather but goes dormant and browns off in winter. Mow at 15-25mm (quite low). Needs regular cutting through spring and summer but minimal attention in winter.

Tall Fescue / Ryegrass: Cool-season grasses that grow more actively in winter and spring. Mow at 40-60mm. These grow when other grasses are dormant, so your winter mowing needs may be slightly higher if you have these varieties.

Frequently Asked Questions

Should I mow my lawn when it is wet?

Ideally, no. Wet grass does not cut cleanly - it tears, leaving ragged edges that turn brown and create entry points for fungal disease. Wet clippings also clump together and can smother the lawn underneath. If you absolutely must mow in damp conditions, make sure your blades are razor sharp and clean the underside of the deck afterwards to prevent buildup.

What time of day is best to mow?

Late morning to mid-afternoon is ideal. The morning dew has dried but the heat of the day has not yet stressed the grass. Avoid mowing in the very early morning (wet grass) or late evening (the cut tips will not heal before nightfall, increasing disease risk).

Should I catch the clippings or let them fall?

For regular mows where you are only removing a small amount, letting fine clippings fall back onto the lawn is beneficial - they break down quickly and return nutrients to the soil. This is called "grasscycling." However, if you have let the lawn grow long, catch the clippings. Heavy clumps of long clippings will smother the lawn and create dead patches.

Does mowing more often make my lawn thicker?

Yes. Regular mowing encourages lateral growth (tillering in warm-season grasses, branching in cool-season grasses). Each time you cut the tips, the plant responds by putting energy into side shoots rather than vertical growth. Over time, this produces a denser, more carpet-like lawn. This is why a weekly-mowed lawn looks dramatically different from one cut monthly - even if it is the same grass variety.

My lawn is patchy - will mowing more help?

Regular mowing alone will not fix bare patches, but it creates the conditions for recovery. Combined with overseeding, fertilising, and proper watering, consistent mowing encourages the surrounding grass to spread into bare areas. For warm-season grasses like Buffalo and Kikuyu, the runners will naturally creep across bare spots if the lawn is healthy and well-maintained.

The Easy Solution: Set Up a Regular Schedule

If keeping track of mowing schedules, seasonal adjustments, and blade heights sounds like a lot of work, you are not alone. That is exactly why most of our clients set up a recurring mowing service. We automatically adjust the frequency and cutting height with the seasons, so your lawn always gets what it needs without you having to think about it.

No reminders, no booking each visit, no spending your weekends behind a mower. Just a consistently healthy, great-looking lawn all year round. Give us a call on 0407 335 937 or book a service online and we will sort out a schedule that works for your lawn and your budget.