Mowing Your Lawn

Mower on grass - Boston Seeds 

There is more to mowing your lawn than first meets the eye and depending on your location, the demands can be very different. Here is our guide to the lawn mowing calendar.


Moving your lawn calendar


Your lawn will begin to grow in the spring, so start off with a high cut at the start of the season to allow the grass to establish. If possible, wait for the grass to be dry, although that is easier said than done in the British springtime! If you cannot find a day when the grass is perfectly dry, then reduce the speed at which you push the mower to avoid tearing the grass as much as possible.

Springtime is also a great time to give your grass all the nutrients it needs for healthy growth and a great appearance. We recommend applying BS Spring & Summer Lawn Fertiliser to your newly cut lawn as it releases nutrients over a 6-8 week period and can be applied from March to August.   


As temperatures increases, the lawn will grow more quickly, so start to mow every two weeks, then increase to a 10-day cycle until you are eventually mowing weekly. Keep the cutting height high as the lawn is still in its growth phase.

May and June

Mow weekly if possible during May and June. It is now time to lower the cutting height if you wish, but stay over 4cm for the time being.

July and August

A lot depends on the summer weather. If it is still wet then continue with the May and June routine, but if we are lucky enough to have a dry summer, then reduce the mowing frequency to every fortnight. Raise the cutting height if it is very hot, to allow the grass to keep more of its moisture and avoid your lawn being scorched.


The end of August and September is a good growing time for your lawn due to the autumn rains, so you will probably need to mow frequently. You can lower the cut if you raised it for a hot summer, but if your lawn suffers from moss, you should instead raise the mowing height to discourage its growth.

Autumn is a good time to treat your lawn to help prevent turf diseases and also provide nutrients throughout the winter period. Our BS Autumn & Winter Fertiliser has the addition of iron which gives your grass a deep green colour and is perfect for applying from September to November. 


In October you are nearly at the end of the mowing season, so gradually start to raise the height of the cut to its eventual winter height.


For the final regular cut of the year, you might consider using a rotary mower on a dry lawn to suck up any remaining autumn leaves. Set the height to its maximum to allow the lawn to rest over the winter.

Winter lawn mowing

The only maintenance you need in winter is the occasional light 'topping' cut. Make sure the soil is firm and the grass is relatively dry. Never mow if the lawn is frosty or if freezing is due within 24 hours.


If you would like to read more about lawn care, take a look at our 'caring for your lawn' article for additional hints and tips.