Why October and November Are the Perfect Months to Install a Water Butt

Make the most of autumn rain, prepare your garden for next summer and discover how a simple water butt can help you use water more wisely.

When the weather turns cooler and the rain starts falling more regularly, most of us aren't thinking about watering the garden. We're more likely to be sweeping up leaves, planting spring bulbs and getting the garden ready for winter.

But here's a gardening tip worth remembering: autumn is one of the best times to start collecting rainwater.

While your garden enjoys the wetter weather, a surprising amount of rain can be running off your roof and straight down the drain. With a water butt in place, you can capture some of that water and save it for the times when your plants need it most.

At Rainwater Terrace, we believe saving rainwater is one of the simplest, most practical changes you can make in your garden. And with water costs under pressure and dry spells becoming an increasingly important consideration for gardeners, it's a habit worth starting now.

Here's how to make the most of the autumn and winter rainfall, with practical tips to help you get more from your garden.

1. Why install a water butt in autumn?

It might seem more logical to buy a water butt in spring, just as the garden bursts into life. The trouble is that by then, you've already missed months of potential rainfall.

October and November offer an opportunity to get ahead.

As the wetter months arrive, your water butt can begin collecting rainwater from your roof, garage, greenhouse or shed. Over time, that stored water becomes a useful reserve for watering plants during drier weather.

Think of it as preparing for next summer while the weather is doing the work for you.

You don't need a large garden to benefit, either. A compact water butt can be useful for a small patio, courtyard or collection of pots, while a larger system may suit a garden with flower beds, vegetables and plenty of containers.

Gardening tip: If you already have a water butt, autumn is a good time to check that the lid is secure, the tap works properly and your gutters and downpipes are clear of leaves. A little maintenance now helps your system collect rainwater efficiently throughout the wetter months.

2. How much rainwater can you actually collect?

More than many people realise.

A roof can collect a considerable amount of rainwater, even when the rainfall doesn't seem particularly heavy. The amount you collect depends on your roof's size, the amount of rain and how efficiently your collection system works.

Now imagine collecting rainfall over several wet days rather than just one shower. Even a modest roof can make a useful contribution to your garden's water supply.

Of course, a water butt has a finite capacity. Once it is full, any additional rainfall will need to overflow safely, so it is important to install your system correctly and keep the overflow clear.

Gardening tip: If you regularly run out of stored water in summer, consider whether a larger-capacity system or additional connected storage could suit your needs. More storage gives you a better chance of keeping a reserve when rainfall is limited, although no water butt can guarantee a full supply through a prolonged dry spell.

3. Can a water butt help reduce your water bills?

For many households, the garden is a sensible place to start using less mains water.

If you regularly water pots, hanging baskets, vegetables, newly planted shrubs and flower beds using a garden tap, collecting rainwater gives you an alternative.

The potential financial benefit depends on your circumstances. Households with a water meter may notice a more direct effect on their bills when they reduce their mains water consumption. If your charges are not based on how much water you use, the immediate financial saving may be less noticeable.

However, there is a wider reason to think about water efficiency.

Water is a valuable resource, and supplying, treating and delivering it takes infrastructure and energy. As demand grows and weather patterns become less predictable, making better use of the rain that falls on our homes and gardens is a sensible long-term habit.

A water butt won't solve every water-saving challenge, and it won't necessarily pay for itself quickly. But it can help reduce the amount of treated water you use outdoors, while giving you a convenient supply for everyday gardening.

The best approach is to collect rainwater when it is available, use it sensibly and avoid wasting water wherever possible.

4. Is rainwater better for your plants?

In many cases, yes.

Rainwater is naturally low in dissolved minerals compared with mains water, particularly in hard-water areas. This makes it a particularly useful choice for plants that prefer softer, less alkaline water.

These include acid-loving plants such as rhododendrons and camellias, as well as many houseplants, including orchids.

It's also ideal for everyday garden jobs such as watering established flowers, shrubs, vegetables and container plants when they need a drink.

Rainwater can be especially useful during the growing season, when pots and hanging baskets can dry out quickly.

Gardening tip: Water the soil around the base of your plants rather than soaking the foliage. This helps direct water towards the roots and reduces unnecessary waste. A watering can is particularly useful for controlling how much water reaches each plant.

5. What should you do with your water butt during winter?

One of the best things about installing a water butt in autumn is that you can continue collecting rainwater throughout the colder months.

You don't need to empty it simply because winter is approaching. However, a little seasonal care will help keep everything working properly.

Here's what to check:

  • Clear your gutters: Fallen leaves and other debris can restrict water flow and enter your storage system.

  • Check the lid: Keep the water butt covered to prevent leaves, debris and wildlife from getting inside.

  • Keep the overflow clear: Heavy autumn and winter rainfall needs somewhere safe to go when the butt is full.

  • Watch for freezing weather: Water expands when it freezes. Follow your water butt manufacturer's advice for cold-weather care, and avoid forcing frozen taps or valves.

  • Check the stand and base: A full water butt is heavy, so it needs firm, level support throughout the year.

  • Use stored water when appropriate: During mild, dry spells, you may still need to water newly planted shrubs, trees and containers. Don't assume every plant needs watering just because the soil surface looks dry.

If your garden is already wet and your plants are established, you may not need to water very often during winter. The important thing is to have your rainwater collection system ready for when the weather changes.

6. Five simple ways to make your garden more water-efficient

A water butt is an excellent starting point, but combining rainwater collection with a few other gardening habits can make your stored water go further.

Improve your soil

Adding organic matter, such as well-rotted garden compost, helps improve soil structure and its ability to hold moisture. Healthy soil gives plant roots a better environment and can reduce how frequently you need to water.

Mulch your flower beds

A layer of suitable organic mulch, such as composted bark or leaf mould, helps reduce moisture loss from the soil surface. Autumn is a useful time to replenish mulch around established plants, leaving a little space around stems.

Give pots and containers a little extra attention

Containers dry out more quickly than many garden beds, particularly in warm or windy weather. Check the compost before watering rather than automatically reaching for the watering can every day.

Choose plants suited to your garden

Plants that thrive in your soil and growing conditions are generally easier to maintain. If your garden is exposed and dries out quickly, drought-tolerant varieties can help reduce watering requirements.

Water where it matters

When plants need watering, direct it towards the root zone. Water thoroughly where appropriate, rather than giving plants frequent, light sprinkles that may not reach their roots.

Combined with collecting rainwater, these small changes can make gardening more efficient without taking the enjoyment out of it.

7. Choosing the right water butt for your garden

The best water butt is one that fits your available space and the amount of water you are likely to use.

At Rainwater Terrace, our modular systems are designed to make rainwater collection practical while adding greenery to your outdoor space.

Our water butts combine rainwater storage with integrated, self-watering planters, giving you somewhere to grow flowers, herbs or other suitable plants while making use of the rainfall collected from your roof.

With different capacities available, you can choose a system to suit your garden:

  • 67 litres: A compact option for smaller spaces and patios.

  • 134 litres: A two-tier system offering more storage alongside additional planting space.

  • 200 litres: A three-tier system for gardeners who want more capacity and room for planting.

  • Larger double systems: Options for gardens where additional rainwater storage would be useful.

Before buying, check that you have a suitable roof and downpipe, enough space for the unit, and a firm, level surface to support the weight of the filled water butt.

You can then choose a position that makes it easy to access the tap and use the stored water around your garden.

Explore the range to find a water butt that works for your space, your planting and your water-saving goals.

8. Get ready for next summer and save 20% this autumn

It's easy to put off buying a water butt until the weather turns dry and the garden starts asking for more water.

But by installing one in October or November, you can start collecting rainfall well before the next growing season.

You'll be making better use of a natural resource, reducing your reliance on mains water for outdoor watering and giving yourself a useful head start for spring and summer.

And there's an added bonus: you can currently save 20% on your Rainwater Terrace water butt purchase with discount code AUTUMN20.

If you've been thinking about collecting rainwater, now is a great time to get started.

Shop Rainwater Terrace water butts

Use code AUTUMN20 at checkout to claim your 20% discount.

Don't let the autumn rain go to waste. Start collecting it now, and your garden will be better prepared for the months ahead.

Rainwater Terrace - Harvest Rainwater. Grow More. Waste Less.

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