Watering Tips for Grounds During Hot UK Weather: How to Protect Your Grounds from Heat, Drought and Fire
At Wessex Grounds Services, we know that maintaining healthy, attractive and safe outdoor spaces during periods of hot, dry weather requires more than simply turning on a hose. Our watering tips for grounds are designed to help businesses, schools, local authorities, sports facilities and other organisations protect their lawns, planting and landscaped areas while also using water responsibly and reducing fire risk.
The UK may be known for its changeable weather, but recent summers have shown that periods of prolonged heat and dry weather are becoming an increasingly important consideration for grounds managers.
Hot, dry conditions can put considerable stress on grass, trees, shrubs, flower beds and newly planted areas. At the same time, dry vegetation can increase the risk of grass and wildfires, particularly when combined with wind and potential ignition sources.
This means that effective summer grounds maintenance needs to consider watering, mowing, planting, vegetation management and fire prevention together.
At Wessex Grounds Services, we create bespoke grounds maintenance plans for our customers, taking into account the individual site, its use and its maintenance requirements.
Why Do Grounds Need Extra Care During Hot Weather?
During hot weather, plants lose water more quickly through a natural process called transpiration. High temperatures, dry soil and wind can all increase moisture loss.
This can be particularly noticeable in:
- Newly planted trees and shrubs
- Newly laid turf
- Flower beds
- Seasonal bedding
- Commercial lawns
- Sports pitches
- School grounds
- Containers and planters
- Exposed landscaped areas
Newly planted vegetation is particularly vulnerable because its root system has not yet become fully established.
The RHS’s current advice for heatwaves recommends using water carefully, prioritising plants that need it most, mulching to retain moisture and allowing established lawns to go brown during drought because they can recover when rain returns.
For large commercial or public sites, this targeted approach can make a significant difference.
1. Water Early in the Morning
One of our most important watering tips for grounds is to choose the right time of day.
Early morning is generally an excellent time to water. Temperatures are lower and evaporation is reduced, allowing more water to reach the soil and root zone before the heat of the day increases.
If early morning watering isn’t practical, evening can be an alternative. However, watering late in the evening can leave foliage damp overnight, potentially increasing the risk of fungal problems.
Where possible, avoid watering during the hottest part of the day.
For larger sites, irrigation systems can also be adjusted to operate during more appropriate periods.
2. Water Thoroughly Rather Than Little and Often
When temperatures rise, it can be tempting to give lawns and plants a quick sprinkle every day.
However, light surface watering may not provide sufficient moisture to reach the root zone.
Where watering is appropriate, the aim should be to get moisture into the soil where plants can use it rather than simply wetting the surface.
Before watering, check the condition of the soil and the needs of the plants rather than automatically following a fixed daily schedule.
The RHS currently recommends watering thoroughly and using water strategically during periods of heat and drought.
For larger grounds, this approach can also help avoid unnecessary water use.
3. Prioritise Newly Planted Areas
Not every part of your grounds will require the same amount of water.
At Wessex Grounds Services, we recommend paying particular attention to newly planted areas during prolonged periods of dry weather.
Newly planted trees and shrubs
Recently planted trees and shrubs can be particularly vulnerable because their roots have not yet spread extensively into the surrounding soil.
New turf
Newly laid turf needs sufficient moisture while it establishes its root system.
Seasonal planting
Flowers and seasonal bedding can lose moisture quickly during hot weather, particularly in exposed locations.
Containers and planters
Containers can dry out considerably faster than plants growing in the ground and therefore need regular monitoring.
The key is to prioritise the areas that genuinely need water rather than watering every part of a site equally.
4. Don’t Try to Keep Every Lawn Green
One of the biggest misconceptions about summer grounds maintenance is that a healthy lawn must remain green throughout a heatwave.
Established grass can turn brown during prolonged dry weather as it enters a period of dormancy. In many cases, it will recover once rainfall returns.
The RHS specifically recommends allowing lawns to go brown during drought rather than using excessive water to maintain their colour.
For commercial grounds, schools and public spaces, the priority should therefore be maintaining a safe and manageable surface, rather than trying to achieve a perfect green appearance throughout every period of hot weather.
This is particularly relevant when water restrictions are in place.
5. Adjust Your Mowing Routine
Mowing is another important consideration during hot weather.
Cutting grass extremely short can increase stress and expose more of the soil surface to sunlight and evaporation.
During periods of heat, allowing grass to remain slightly longer can help shade the soil and reduce moisture loss.
We also recommend avoiding unnecessary mowing when grass is already showing significant signs of drought stress.
A professional grounds maintenance programme should be flexible enough to respond to weather conditions rather than following exactly the same mowing schedule throughout the year.
Wessex Grounds Services provides grass cutting and turf care as part of its wider grounds maintenance service, alongside sports field care, weed control, planting, tree and shrub maintenance and other external maintenance services.
6. Use Mulch to Help Retain Moisture
Watering isn’t the only way to help plants cope with dry conditions.
Mulching suitable planting beds can help reduce evaporation, suppress weeds and protect plant roots from temperature fluctuations.
Organic mulch can be particularly useful around trees, shrubs and established planting beds.
This is a good example of how water conservation and grounds maintenance can work together.
Rather than continually adding more water, we can also look at ways of helping the soil retain the moisture it already has.
The RHS recommends mulching as one of the measures that can help plants cope with periods of heat and drought.
7. Check Irrigation Systems for Water Waste
If your site has an irrigation system, hot weather is a good time to check that it is working efficiently.
Look for:
- Leaking pipes
- Broken sprinkler heads
- Blocked nozzles
- Water running onto paths or hard surfaces
- Areas receiving too much water
- Areas receiving too little water
- Irrigation operating during the hottest part of the day
An inefficient irrigation system can waste considerable quantities of water while still leaving plants thirsty.
For larger commercial sites, irrigation should form part of the overall grounds management plan rather than being treated as a separate issue.
What Happens When a Hosepipe Ban Is Introduced?
This is an increasingly important question for anyone responsible for maintaining large outdoor spaces.
During periods of prolonged hot and dry weather, water companies may introduce restrictions to protect water supplies.
A standard hosepipe ban is legally known as a Temporary Use Ban (TUB).
The exact restrictions depend on the water company’s notice and can apply to specified uses of water. Organisations should therefore always check the current restriction rather than relying on assumptions or previous hosepipe bans.
Ofwat also explains that if drought conditions become more severe, water companies can introduce Non-Essential Use Bans (NEUBs), which can impose additional restrictions on businesses and other organisations.
Check Your Water Company’s Current Rules
If a hosepipe ban is introduced, the first thing we recommend is checking the precise wording of the restriction affecting your area.
For customers in the Wessex Water region, check the latest information directly with Wessex Water.
Do not assume that because you are a business, school, sports facility or grounds maintenance contractor you are automatically exempt.
Likewise, don’t assume that a previous exemption will automatically apply to a new restriction.
The rules can change according to the particular ban and circumstances.
What Does a Hosepipe Ban Mean for Commercial Grounds?
A standard Temporary Use Ban and a Non-Essential Use Ban are not necessarily the same thing.
For businesses and organisations responsible for large outdoor spaces, this distinction is particularly important.
Ofwat explains that Non-Essential Use Bans can be introduced in more serious drought conditions and can specifically affect businesses.
This means organisations managing significant areas of grounds should ideally have a contingency plan before restrictions are introduced.
Consider:
- Which areas genuinely need watering?
- Which plants are newly established?
- Which areas can tolerate drought?
- Can irrigation be reduced?
- Can soil moisture retention be improved?
- Is rainwater harvesting available?
- Are there lawful alternative water sources?
- What does the current water restriction allow?
- Are there any specific exemptions?
Don’t Assume Sports Grounds Are Automatically Exempt
Sports facilities can have particular watering requirements, but a sports pitch should not automatically be assumed to be exempt from a hosepipe ban.
Specific restrictions can contain specific exemptions, and these need to be checked against the current notice.
If you manage:
- Football pitches
- Rugby pitches
- Cricket grounds
- Golf courses
- School playing fields
- Tennis facilities
- Other sports surfaces
check the precise requirements of the current water restriction before using a hosepipe, sprinkler or other watering equipment.
Our sports field maintenance service can help organisations manage the wider maintenance requirements of sports surfaces throughout the year.
What Can You Do If Watering Is Restricted?
A hosepipe ban doesn’t necessarily mean that every plant on a site should simply be left without consideration.
Instead, the focus should be on prioritisation and water efficiency.
Highest priority
- Newly planted trees
- Newly planted shrubs
- New turf
- Newly seeded areas
- High-value planting
- Plants showing significant drought stress
Lower priority
- Established lawns
- Mature shrubs
- Established drought-tolerant planting
- Areas that can safely enter summer dormancy
This approach allows resources to be focused where they can have the greatest benefit.
Consider Rainwater Harvesting
Rainwater harvesting can form part of a longer-term water management strategy.
Water butts and larger rainwater harvesting systems can capture rainfall for use during drier periods.
For larger commercial sites, it may be worth considering whether rainwater harvesting could be incorporated into the site’s landscaping or irrigation system.
However, it is important to check the current water restriction before using stored water for an activity that may be restricted. The fact that water has been collected rather than supplied through the mains does not automatically mean every use is permitted.
The RHS also recommends making use of stored rainwater where appropriate as part of a water-efficient approach to gardening.
Improve Soil Moisture Retention
When water is restricted, preventing moisture from being lost becomes just as important as applying additional water.
There are several ways grounds managers can help retain available moisture.
Mulching
Mulch can help reduce evaporation and protect plant roots.
Weed control
Weeds compete with desirable plants for available water, so appropriate weed management becomes particularly important during dry periods.
Wessex Grounds Services provides specialist weed control for commercial, local authority and private customers.
Soil improvement
Healthy soils with good organic matter can help retain moisture more effectively than compacted or degraded soils.
Appropriate mowing
Avoid unnecessarily short mowing during hot weather. Allowing established grass to remain slightly longer can help reduce moisture loss and protect the soil surface.
Plan Before a Hosepipe Ban Is Introduced
One of the best watering tips for grounds is to plan ahead.
If your organisation manages a significant area of landscaped grounds, don’t wait until a hosepipe ban has been introduced before deciding what you will do.
We recommend reviewing your summer grounds maintenance plan in advance.
1. Identify vulnerable areas
Know which trees, shrubs, turf and planting will require the most attention.
2. Review your irrigation
Check for leaks, damaged sprinkler heads and areas receiving unnecessary amounts of water.
3. Improve soil condition
Healthy soil can help retain available moisture.
4. Mulch appropriate planting
Mulching can help reduce evaporation.
5. Consider rainwater harvesting
Assess whether your site could collect and store rainfall.
6. Monitor weather conditions
Long periods of hot and dry weather can quickly change the requirements of a site.
7. Know your water company’s rules
Make sure the person responsible for your grounds understands what is and isn’t permitted when restrictions are introduced.
Fire Safety and Grounds Maintenance During Hot, Dry Weather
Watering isn’t just about keeping plants alive.
During prolonged periods of hot and dry weather, fire safety grounds maintenance becomes increasingly important.
Dry grass, leaves, hedges, bracken, branches and other vegetation can become highly combustible.
Dorset & Wiltshire Fire and Rescue Service issued an Amber wildfire alert in April 2026, warning that dry conditions could allow wildfires to spread quickly and easily. The service has also issued warnings during the summer about the increased wildfire risk associated with hot and dry conditions.
For businesses and organisations managing outdoor spaces, fire prevention should therefore form part of the wider summer maintenance plan.
Keep Dry Vegetation Under Control
Long, dry grass and accumulated dead vegetation can provide fuel if a fire starts.
However, this needs to be balanced with the health of the grass. Cutting grass too aggressively during extreme heat can increase drought stress.
Grounds maintenance teams should therefore monitor:
- Long, dry grass
- Dead vegetation
- Fallen leaves
- Dead branches
- Hedge and shrub cuttings
- Accumulated garden waste
- Dry vegetation around buildings
- Rubbish and litter
Dorset & Wiltshire Fire and Rescue Service advises landowners and land managers to be prepared for fires and, where appropriate, ensure fire breaks are maintained and cut grass and vegetation are removed from the site.
Take Care When Using Grounds Maintenance Machinery
Machinery can present an ignition risk during exceptionally dry conditions.
Hot components, sparks, exhaust systems and accumulated dry material can potentially cause a fire.
Dorset & Wiltshire Fire and Rescue Service identifies sparks from machinery and vehicles as potential causes of grass and wildfire ignition.
Additional care should therefore be taken when using:
- Strimmers
- Brush cutters
- Mowers
- Hedge cutters
- Tractors
- Forestry equipment
- Other powered machinery
Machinery should be properly maintained and checked, and conditions should be assessed before work begins.
If conditions are exceptionally dry, hot and windy, it may be appropriate to postpone some operations until conditions are safer.
Keep Vehicles Off Dry Grass
Vehicles should not be parked on long, dry grass wherever possible.
Hot vehicle components, including catalytic converters, can potentially ignite dry vegetation.
Dorset & Wiltshire Fire and Rescue Service specifically highlights vehicle catalytic converters as a possible ignition source when vehicles are parked on dry grass or verges.
This is particularly important for:
- Rural properties
- Sports grounds
- Schools
- Event fields
- Parks
- Country estates
- Large commercial sites
Where possible, use suitable hardstanding or designated parking areas.
Be Careful with BBQs, Smoking and Outdoor Fires
Hot weather often means more people using parks, sports grounds, gardens and outdoor spaces.
Unfortunately, this can also increase the opportunity for accidental fires.
Discarded cigarettes, disposable BBQs, fire pits and campfires can all present a significant risk when surrounded by dry grass and vegetation.
Dorset & Wiltshire Fire and Rescue Service’s current advice encourages people to avoid BBQs and campfires on heathland and in woodlands and promotes the message #BringAPicnicNotABarbecue.
For organisations responsible for outdoor spaces, clear signage and sensible site rules can help reduce unnecessary risks.
Protect Buildings and Structures from Dry Vegetation
Where landscaped grounds surround buildings, maintaining a sensible buffer can also be important during very dry weather.
Avoid allowing excessive amounts of dry vegetation, grass cuttings, dead leaves or other combustible material to accumulate immediately next to:
- Buildings
- Sheds
- Fences
- Wooden structures
- Storage areas
- Equipment
Trees and shrubs should also be appropriately maintained where they are growing close to buildings.
Good grounds maintenance and sensible vegetation management can help reduce potential fire exposure around buildings.
Watering Is Not a Fire-Prevention Strategy
There is an important distinction to make.
Watering should not be regarded as a substitute for fire prevention.
Keeping plants and newly established areas adequately watered can reduce drought stress, but responsible fire prevention involves much more.
A sensible summer grounds maintenance programme should combine:
- Appropriate watering
- Responsible mowing
- Vegetation management
- Removal of excessive dry material
- Safe machinery use
- Careful vehicle positioning
- Good housekeeping
- Appropriate visitor guidance
- Monitoring local weather and wildfire warnings
In other words, effective watering tips for grounds are only one part of maintaining a safe and healthy site during extreme weather.
What If You Discover a Grass or Ground Fire?
If you discover a grass, vegetation or wildfire on your site, don’t put yourself at risk by attempting to tackle a large or rapidly spreading fire.
Move to a safe location and call 999, asking for the Fire and Rescue Service.
Give the emergency operator as much information as possible about the location. What3Words or another location app can be useful if you are unsure of the exact location.
Dorset & Wiltshire Fire and Rescue Service advises people to report countryside fires immediately, move to safety and not attempt to tackle fires that cannot be put out with a bucket of water.
For large sites, it is also worth ensuring emergency access routes remain clear and that staff know how emergency services can access the grounds.
Summer Grounds Maintenance Means Adapting to the Weather
At Wessex Grounds Services, we understand that the maintenance programme that works perfectly during a wet British spring may need to change considerably during a prolonged period of heat and drought.
Our approach is to look at the whole site and its individual requirements.
That can mean adapting:
- Mowing schedules
- Watering programmes
- Plant maintenance
- Turf care
- Weed management
- Vegetation management
- Fire-risk management
- Seasonal planting
- Sports pitch maintenance
- General grounds maintenance
Our grounds maintenance services are designed around individual sites and can include grass cutting and turf care, sports field care, weed control, seasonal bedding and planting, litter and leaf clearance, tree and shrub maintenance and hard-surface maintenance.
For schools, Wessex Grounds Services also provides a range of services designed around the specific requirements of school sites.
Don’t Wait Until the Heatwave or Hosepipe Ban Arrives
The best time to review your grounds maintenance plan is before extreme weather arrives.
By identifying vulnerable planting, improving soil moisture retention, reviewing irrigation, considering rainwater harvesting and managing dry vegetation appropriately, you can make your site more resilient to hot and dry conditions.
And if a hosepipe ban is introduced, understanding the rules and having a contingency plan means you can respond quickly and responsibly.
At Wessex Grounds Services, we provide professional grounds maintenance and landscaping services to local authorities, schools, businesses and other organisations across Dorset, with wider services across the South West.
Our team has extensive experience across grounds maintenance, landscaping, horticulture and consultancy, and we can create a bespoke maintenance plan tailored to your site and budget.
Need Help Managing Your Grounds This Summer?
Whether you manage a school, sports facility, commercial property, public space or landscaped site, hot and dry weather can present challenges.
From watering and turf care to mowing, planting, vegetation management and fire-risk considerations, professional grounds maintenance can help you stay ahead of the changing conditions.
Talk to Wessex Grounds Services about your summer grounds maintenance requirements.
Contact Wessex Grounds Services
Or find out more about our:
Grounds Maintenance and Landscaping Services
