Winterizing your garden irrigation system:
How to protect your system from frost damage
A professional irrigation system is the backbone of a well-tended garden. But when the first night frosts arrive, it needs special attention. If you don’t act now, you risk expensive repairs in spring. With the right products and a systematic approach, you can protect your investment and start the new season with peace of mind.
Why winter preparation is so important
As soon as temperatures permanently fall below 5 °C, there is an acute risk of frost for all water-bearing components. Water expands by around nine percent when it freezes and develops enormous forces in the process. The consequences can be considerable: burst PVC or PE pipes, damaged pump housings, jammed solenoid valves or porous hoses.
Professional specialist companies such as Zinsser KG from Uelzen know this problem from decades of experience. The traditional family business, which has been designing gardens since 1894, recommends that the entire irrigation system should be emptied and winterized by November at the latest.
Team Petrik from Saxony also emphasizes the importance of timely winter preparation when advising its customers. The company with over 20 employees offers a complete service that includes the professional winterization of irrigation systems.
bevo: Your partner for professional irrigation technology
bevo is part of MegaGroup Trade Holding and has established itself as a leading supplier of water technology in Germany. The Vlotho-based company offers a comprehensive range of products for garden irrigation, pool construction and agricultural irrigation. With over 30 years of experience and a specialized team of irrigation experts, bevo supports gardening and landscaping companies from planning to installation.
The product portfolio includes renowned brands such as Rain Bird, NaanDanJain and Netafim. Whether drip irrigation, sprinkler systems or automatic control systems: bevo supplies all components for efficient and sustainable garden irrigation.
Step by step: Winter preparation
Empty pipes and couplings
All water-bearing pipes must be completely drained before the first frost. The most effective method combines several steps: First, close the water supply at the main shut-off valve. Then open all drainage points at the lowest points of the system. Residual water can be blown out with compressed air, whereby a maximum pressure of 3 bar is recommended.
bevo offers PVC and PE piping systems with smooth inner walls that are particularly easy to empty. The plug-in couplings enable tool-free disassembly, which considerably simplifies winter preparation.
Drip irrigation and micro-irrigation
Drip hoses and micro-sprinklers are particularly sensitive to frost. The fine openings can be permanently damaged by ice formation. It is advisable to separate drip lines from the main lines and store them open in a frost-free location. Alternatively, drain valves can be installed at the ends of the drip lines to allow continuous drainage.
immergrün GmbH from Hemer consistently relies on maintenance-friendly systems for its irrigation projects. The modern specialist company uses 3D planning tools to define optimum drainage points as early as the concept phase.
Store pumps frost-proof
Pumps are the heart of every irrigation system and are correspondingly sensitive to frost. Winter preparation begins by switching off the power supply. All the water is then drained from the pump housing. Rough dirt should be removed before the pump is stored in a dry, ventilated place.
bevo offers a wide range of pressure pumps and pump systems that are characterized by easily accessible drain plugs and quick-release couplings. This facilitates both winterization and commissioning in the spring.
Protect controls and valves
Modern irrigation systems work with electronic controls, solenoid valves and sensors. These components require special protection against moisture and cold. The most important measures include Remove batteries from battery-operated controllers, open valve boxes and check for residual water, dry out cable connections and fit protective caps if necessary.
bevo offers control technology from Rain Bird that is specially designed for the climatic conditions in Central Europe. The robust housing and corrosion-resistant components considerably simplify seasonal maintenance.
The winter check: the five most important points
A systematic approach ensures that no component is forgotten. Galabau Ferber GmbH from Dinkelscherben has over 30 years of experience in professional garden design and recommends the following checklist to its customers:
| Area | Measure | Importance |
|---|---|---|
| Main line | Turn off the water supply, drain the pipe | Essential |
| Drip lines | Drain completely, store open | Essential |
| Pumps | Empty, store in a dry and frost-free place | Essential |
| Controls | Remove batteries, check valves | Important |
| Accessories | Dismantle sprinklers, roll up hoses | Recommended |
Sustainable water technology for the future
Preparing for winter is also a good time to put your own irrigation system to the test. Modern systems work much more efficiently than older systems and can reduce water consumption by up to 40 percent.
bevo is actively committed to sustainable water solutions. The company is part of the WaterStarters initiative, which campaigns for access to clean drinking water worldwide. This basic attitude is also reflected in the product range: drip irrigation systems, soil moisture sensors and intelligent control systems help to make optimum use of water.
Zinsser KG combines traditional craftsmanship with modern technology and specializes in swimming ponds, natural pools and efficient irrigation solutions. Interested parties can experience various systems in practice in the company’s show gardens.
Pro tip: Start planning for 2026 now
The winter months are ideal for planning extensions or optimizations to the irrigation system. During this time, specialist companies have more capacity for detailed consultations. bevo supports landscape gardeners with individual irrigation plans: based on a garden design, the team of experts creates a complete irrigation concept including a detailed drawing and product list.
Team Petrik offers its customers a complete service from the first consultation to the finished plant. Careful planning during the quiet season pays off, as it enables smooth implementation as soon as the soil conditions allow in spring.
Preparing your irrigation system for winter is an investment in the future of your garden. With high-quality products from bevo and the expertise of bluegardens partner companies, you can protect your system from frost damage and start the new gardening season optimally prepared.
Frequently asked questions
How do I drain my irrigation line correctly?
First turn off the water supply at the main tap, then open all drainage points at the lowest points. Blow out any residual water with compressed air (maximum 3 bar). Blowing out with compressed air is particularly important for underground pipes.
Do I have to remove the pump?
Yes, pumps should be removed, drained and stored in a dry place before the first frost. This considerably extends their service life and prevents damage caused by ice forming in the housing.
Can solenoid valves freeze?
Yes, solenoid valves with residual water are highly susceptible to frost. The valve boxes should be opened and checked. If necessary, protective caps can provide additional protection.
What happens if I do nothing?
In the worst case scenario, there is a risk of burst pipes, burst pump housings and defective controls. The repair costs in spring are many times higher than the cost of winter preparation.
Which products specifically help me?
bevo offers a comprehensive range of piping systems, pumps and controls through to drip irrigation. Systems with quick couplings and easily accessible drainage points are particularly practical.
Where can I find a specialist company in my region?
The bluegardens platform connects certified gardening and landscaping companies. Companies such as Zinsser KG, immergrün, Team Petrik and Galabau Ferber stand for quality and personal advice on all matters relating to irrigation and garden design.