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How to keep lawn green in winter

Simple steps to keep your lawn green during winter

Keeping your lawn green during the winter can feel like a losing battle, but with a few simple changes to your lawn care routine, it’s entirely possible. Whether it’s the cold temperatures or the shorter days, winter can take a toll on your grass, leaving it looking dull and patchy. But don’t worry — by understanding how different grass types respond to the cold and making some strategic adjustments, you can maintain a vibrant, green lawn all season long.

In this guide, we’ll cover:

• Why grasses lose their colour in winter
• The best grass types for winter
• Essential lawn care tips for the colder months
• How to transition your lawn from winter to spring
• Preventing and managing common winter lawn problems

Let’s dive into the best tips and techniques for keeping your lawn lush even when winter hits. Watch our video on winter lawn care for more expert tips.

Why grasses lose colour in winter and understanding grass types

Why does grass lose its green colour in winter?

In winter, warm season grasses  go dormant, conserving energy by slowing growth and reducing chlorophyll production, which leads to the grass losing its green colour. Colder temperatures, less sunlight, and frost all contribute to this natural discolouration. Minimise shade by pruning back trees and shrubs to help maximise winter sun exposure, and try to avoid walking on frosty or dormant grass, as this can cause damage and lead to brown patches that are slow to recover.

Differences between warm-season and cool-season grasses

Warm-season grasses thrive in the heat and naturally turn brown in winter as they go dormant. On the other hand, cool-season grasses like ryegrass and tall fescue can tolerate lower temperatures and stay green. Cool season grasses will go yellow in the warm season and require daily watering. Choosing the right type of grass is key to achieving a green winter lawn.

Essential lawn care tips for a green lawn in winter

Proper fertilisation for winter lawns

Using a winter-specific fertiliser helps maintain lawn colour and strength through the colder months. In late autumn, apply a potassium-rich fertiliser evenly using a spreader to prepare your lawn for winter stress.

Watering tips for winter lawn care

Even in winter, your lawn needs water to stay healthy, but too much water can lead to problems. Aim for deep, infrequent watering to encourage deeper roots:

• Adjust based on rainfall: Reduce watering during wet weather and avoid watering when frost is forecasted.

Mowing practices to maintain a green lawn in winter

Mowing correctly in winter helps keep your lawn healthy and green. Here are a few tips:

• Raise the mower blades: Keeping the grass a little longer protects the roots and maintains better colour.
• Mow only when dry: Mowing wet grass can damage it and lead to disease.
• Keep blades sharp: Sharp blades make clean cuts, reducing stress on the grass and helping it recover faster.

Winter lawn care myths and facts

Debunking common winter lawn care myths

Many myths about winter lawn care can lead to poor results. Here are some you should be aware of:

Myth: "Lawns don’t need water in winter."
Fact: Grass needs water even in winter, especially during dry spells. Water helps prevent winter desiccation, which can dry out grass despite cold conditions. It's important to monitor rainfall and provide supplemental watering when necessary to maintain moisture levels in the soil.

Myth: "Fertilising in winter is pointless."
Fact: Using a winter-specific fertiliser can actually strengthen your lawn and improve its resilience, even when growth slows down. Fertilisers high in potassium boost root health and prepare your lawn to bounce back quickly when warmer weather arrives.

Myth: "Warm season grasses will stay green year-round with enough care."
Fact: Warm season grasses like TifTuf Bermuda naturally go dormant in cold weather. 

Myth: "You should keep mowing your lawn short in winter."
Fact: Cutting your lawn too short in winter can stress the grass, exposing roots to frost and cold damage. Instead, raise your mower blades slightly to keep the grass longer, which provides insulation and reduces the risk of winter damage.

Myth: "Raking leaves off the lawn is unnecessary during winter."
Fact: Leaving leaves on your lawn can block sunlight and trap moisture, creating an environment conducive to disease and fungus growth. Regularly raking leaves or using a blower keeps your lawn healthy by allowing grass blades to absorb sunlight and air.

Myth: "Snow acts as a protective blanket for your lawn, so it’s always beneficial."
Fact: While light snow cover can insulate grass, heavy snow or ice build-up can lead to compaction and suffocation of grass blades. It’s important to carefully manage snow piles and use grass-safe ice melts to minimise damage to your lawn.

How to transition your lawn from winter to spring

Preparing your lawn for warmer weather

As winter ends and warmer weather arrives, transitioning your lawn care routine can help it recover and thrive in spring:

• Aerate the soil: Use a garden fork or aerator to reduce soil compaction, improving air and water movement to the roots.
• Lower mowing height gradually: As temperatures rise, gradually lower your mower blades to encourage fresh growth.
• Increase watering frequency: As the weather warms up, start watering more regularly to support new growth.
• Apply a spring fertiliser: Use a balanced fertiliser to encourage vigorous growth and recovery from winter dormancy.

Managing common winter lawn problems

How to prevent winter lawn diseases

Winter can bring diseases that affect your lawn’s health, like snow mould and fungal infections. Here’s how to keep them at bay:

• Avoid overwatering: Excess moisture encourages fungal growth. Adjust watering based on the weather and avoid waterlogging.
• Improve drainage: Aerate the soil and top-dress with sand or compost to enhance drainage and prevent pooling.
• Remove debris: Clear leaves and thatch to improve air circulation and reduce disease risks.
• Use fungicides if needed: Apply preventative grass fungicides if your lawn has a history of winter diseases. For more information, see our guide on fixing winter lawn damage.

Using lawn care products to enhance winter colour

Applying iron supplements for a greener lawn

Iron supplements can quickly improve lawn colour by boosting chlorophyll production. Apply in late winter or early spring to enhance greenness as the grass starts to grow.

Consider lawn colourants as a temporary solution

For an instant green effect, use Colour Guard :

• Easy application: Use a garden sprayer for even coverage, ensuring all areas are treated.
• Safe for pets and children: These products are non-toxic and environmentally friendly, making them a convenient option for enhancing your lawn's appearance during winter.

What role does sunlight play in keeping my lawn green in winter?

Sunlight is essential for your lawn to stay green during winter. The green chlorophyll in each leaf blade absorbs sunlight. Trimming nearby trees and shrubs can help ensure your lawn gets enough winter sun and maintains its green colour throughout the season.

How can I help my lawn develop deeper roots during winter?

Encouraging your lawn to grow deeper roots can help it stay healthy and green during winter. Water deeply but less frequently to promote root growth, and consider aerating your soil with a garden fork to reduce compaction. This allows roots to access more oxygen, water, and nutrients, supporting a stronger, healthier lawn.

Keep your lawn green and thriving all winter

Maintaining a green lawn through winter is all about working with the season's natural challenges. By choosing the right grass types, adjusting your care routine, and making small changes like fertilising and smart watering, you can keep your lawn looking fresh even in the colder months. With these easy steps, your lawn can stay vibrant and healthy throughout winter.

Don’t let winter dull your lawn’s shine — embrace the season with confidence! For more tips and personalised advice, check out our seasonal lawn maintenance guide, and give us a ring whenever you need! With a bit of extra care, your lawn will not only survive winter but thrive in it!