Spring:
March - May
If weather conditions allow, give the lawn a good raking to clear any debris. A light rolling will also help firm the ground after winter frosts. March is normally the first opportunity to mow your lawn. As a rule of thumb, never remove more than 1/3 of the leaf height - too much and the lawn can turn yellow and leave it exposed to late frost.
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Spring is a good time to feed (nitrogen) and weed your lawn. Again, this will depend on the weather – wait for it to be warm and for the grass to be growing. It is a good time to remove moss, but remember to rake dead moss out after 2 weeks of using a moss killer, typically a lawn sand. Take the opportunity to look at the edges of your lawn and repair any damaged areas.
Summer:
June - August
This is when mowing begins in earnest and the lawn height can be brought down slowly - weekly mowing is typical for May. Take the opportunity to spot treat any weed problems when dry conditions prevail.​ As the summer progresses, mowing twice a week may be necessary to keep your lawn at optimum height. This will help your lawn thicken. A Foliar feed may be beneficial to keep a lush green appearance. Keep an eye on weeds and treat as necessary.
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Continue to mow regularly as weather conditions dictate. If the weather comes dry, it is beneficial to raise the height of your mower. Consider watering in the early morning or late afternoon for better results after a prolonged dry period.
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Spike your lawn and keep it regularly trimmed. You may want to scarify your lawn in order to remove debris and thatch. This will encourage side shoots and allows the lawn to thicken. Top dressing could be considered for the most avid gardener or if you have small lumps and bumps in the lawn. It will also improve the condition of your soil and thus your lawn, if done regularly.
Autumn:
Sep - Nov
This is arguably the most important season for lawn maintenance. Allow the height of your lawn to increase by 25% and mow accordingly to how fast the grass is still growing.
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Leaves should be raked and cleaned away as much as possible, so the grass is not deprived of light and to reduce worm activity over the winter.
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When the final mow is done, leave the grass a half-inch above the summer mowing levels. It's also a good idea to give the lawn a feed to help it maintain its condition over winter and prevent any fungal growth.
Winter:
Dec - February
A quiet season for lawn maintenance, with the exception of the final sweep of leaves and the scattering of any worm casts in dry conditions.
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Avoid excess traveling on frosted or sodden lawns as this will only cause damage to the grass and risk leaving foot print indentations.
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It’s a good season to get the mower cleaned and serviced as well as avoiding the temptation to mow the lawn whilst heavy frosts are about.
