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The climate in the UK brings a lot of inconsistent weather and usually, it brings a lot of rainfall. Many gardens in the UK have a big problem with drainage so if your garden is among them, there are steps you can take to greatly improve the soil and help drainage from adding new drains which is probably more affordable than you think, it just takes some hard work, however, improving drainage can simply mean adding organic matter and grit to the soil, particularly if you have clay soil.
Bad drainage becomes particularly problematic in the winter when plants that were newly planted in spring and summer start to succumb to root rot and lawns start to turn to bogs and encourage moss and algae on your lawn.
There has been a significant increase in the number of homeowners that have done away with large gardens and opted for paving the patios and driveways to try and reduce the problem but this often comes at the expense of gardens borders and lawns. Obviously a waterlogged set of conditions are not ideal if you’re trying to maintain green grass and other plants.
There are a lot of factors that can contribute to poor drainage in your garden and the downside is, bad drainage means you can’t keep your plants growing successfully. So what can you do to fix it?
Install drains under your lawn and new drains around patios
The first thing you might consider is installing a drain, its much easier than you might think, affordable but does take some back-breaking work if you tackle this yourself. This is for very severe conditions and they can even be put under lawns where flooding is a problem.
If you want to install a drain to prevent flooding across the whole of your property you will need to dig a series of trenches in your garden and install a perforated land drain and then cover it back up. With this, water drains through the garden and into that drain pipe and then gets channelled away to another part of your garden.
Most laws in the UK prohibit you from directly channel in the water into a public drain or a sewer system so you’re going to have to find another area in your garden, perhaps an area where water logging isn’t a problem, where the water can go. Ideally, you want it to run into a large ditch that you have filled with gravel and then cover up with something like weed control fabric and then cover this with gravel or soil and then turf (grass), this then acts as a soakaway and does require a proper drain.
You could even use it as a feature and form a dry creek bed like in the picture below by digging the channel and covering it with gravel.
If you are going to install a land drainage system you should do it at the end of summer or the beginning of autumn when the ground is dry and it’s best to have some help.
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Use plants that thrive in wet condition which will also soak up the water
Plants can actually be a source of aid when it comes to improving garden drainage. Large sprawling lawns without a lot of plants leave you much more susceptible to regular flooding but if you grow a lot of extra plants that love water they can help prevent that flooding, soak up some of the water, and keep your garden from turning into a bog.
Plants like astilbes, Caltha palustris also known as Marsh marigold, mint, hostas, maples, ferns, Lobelia cardinalis, and willow trees are among the many options that you can grow. They thrive in these wet conditions and will help remove the extra moisture.
Maintain your lawn by aerating and spiking it
Maintaining your lawn can have a huge impact on improving drainage as many lawns get very compressed when used regularly and the water literally just sits on top during heavy rain. Removing moss by scarifying your lawn with remove moss and thatch that soak up water making your lawn like a sponge, its also helps improve your lawn overall.
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Aerating your lawn can also help with is a process where the lawn is spiked to create holes in the lawn, this can be as simple as forking the lawn or you can use a lawn aerator that removes cores from the lawn for water to enter and get down to the grass roots.
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Improve soil digging in plenty of organic matter and grit
Another option is to tackle the drainage by digging in plenty of organic matter and horticultural grit. This is better suited to gardens that have a small problem, nothing too big.
You can dig in a lot of organic matter. Soil that has more organic content will allow the extra water from the winter rain to drain through. You can always have a compost heap as well so that you have the organic matter on hand every year to add into the soil. It’s also worth digging in plenty of grit into the soil which is aid drainage. This is a great solution for clay soil.
Manage water run off
By incorporating some slopes or angles into your garden, maybe adding multiple layers and levels to the vertical structure, you can better manage the surface water as it runs off your property. There are very easy ways to manage this surface water so that the UK rains don’t just flood the same spot over and over.
This can be costly depending on your circumstances and it’s always best to speak with an expert landscaper and hire an excavator to help you sculpt the contours that you need. This is also a great opportunity to design your garden so that it efficiently moves water into the plant beds you have for your moisture-loving plants or into a pond that you have made on your property. This method is best combined with adding drains at the end of driveways and patios can divert water away from lawns and garden borders.
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Used raised beds to lift your garden up
If there’s really nothing to be done and you have poorly draining soil, no matter the efforts you put into fixing it or you want a more affordable solution once that is also maybe easier, you can still have the garden that you want with a workaround.
Raised beds are a wonderful way to have free-draining soil that’s good quality and can drain onto the lawn or the other parts of the garden that are going to be bog-like anyway if it’s below the waterline.
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Last update on 2021-03-29 / Affiliate links / Images from Amazon Product Advertising API