2GreenA good irrigation system does one thing well: it puts the right amount of water exactly where the garden needs it, at the right time of day, with no waste. In a dry, water-conscious region like the Winelands that is the difference between a garden that thrives through summer and a big water bill for a garden that still struggles. This guide covers the types of system, how to plan and zone one, how it is installed, and how controllers, tanks and boreholes fit in.
The main types of garden irrigation
Most home systems are built from a few building blocks, often combined in one garden:
| Type | Best for | Efficiency |
|---|---|---|
| Drip / dripline | Beds, hedges, veg, pots | Very high, water at the roots |
| Pop-up sprinklers | Lawns, broad even cover | Moderate, some evaporation |
| Micro-sprays | Dense beds and ground cover | Moderate to high |
| Soaker / porous pipe | Rows, hedges, informal beds | High, low pressure |
| Hand watering | Pots and new plants | Depends on the person |
Drip or sprinklers?
It is not either-or. Most gardens are best served by a hybrid: pop-up sprinklers for the broad, even coverage a lawn needs, and drip through the beds, where it delivers water straight to the roots and loses far less to evaporation and wind. Drip also keeps foliage dry, which reduces disease. For the full detail on drip, see our drip irrigation guide.
Plan it in zones
The single most important idea in irrigation is zoning: splitting the garden into areas that are watered separately because they have different needs. A lawn in full sun wants frequent, broad watering; a bed of established water-wise shrubs wants an occasional deep soak; pots want little and often. Run them all on one valve and something is always over or under watered. Give each its own zone and valve, and every part of the garden gets exactly what it needs.
Zoning by need is the same thinking as hydrozoning your planting: group thirsty plants together, group tough ones together, and water each group to its own need rather than to the thirstiest plant in the garden.
How much water does your garden need?
Before you size a system it helps to know roughly how much water the garden actually needs, which changes with the season, your soil and your plants. Our garden watering calculator estimates litres per week for your area so you can plan zones and run times rather than guessing.
How an irrigation system is installed
- 1Plan the layout: map the garden into zones, and work out the sprinkler and drip coverage each zone needs.
- 2Connect to a water source: mains, or a tank or borehole, with the right filter and pressure for the system.
- 3Lay the mainline and valves: a manifold of solenoid valves, one per zone, usually near the water source.
- 4Run the zone pipes: poly pipe to each zone, with pop-up sprinklers on the lawn and dripline through the beds.
- 5Fit filters and pressure regulators: essential on drip, so emitters do not block or blow off.
- 6Wire up the controller: connect each valve to a timer or smart controller and set the schedule.
- 7Test and adjust: run each zone, check coverage, and tune the run times to the season.
The two things DIY systems get wrong
Most home systems that disappoint fail on one of two things: no filter or pressure regulator on the drip (so emitters block or pop off), or one zone for the whole garden (so the lawn and the beds get the same water whether they need it or not). Get those two right and you are most of the way there.
Smart controllers and timers
A timer is what turns an irrigation system from a chore into something that just happens. At its simplest it waters each zone for a set time in the cool pre-dawn hours, when evaporation is lowest. A smart controller goes further: it adjusts to the weather, skips a cycle after rain with a rain sensor, and lets you tune zones from your phone. In a region with water restrictions, a controller that waters efficiently and only when needed pays for itself.
Watering from a borehole or tank
Many Winelands gardens run irrigation off a borehole or rainwater and storage tanks rather than municipal water, which cuts the water bill and keeps the garden going through restrictions. The key is matching the pump and pressure to the system and fitting the right filtration, because borehole and tank water carries more sediment than mains and will block drip emitters without a proper filter. We integrate irrigation with boreholes and tanks as a matter of routine, sizing the pump and filter so the system runs reliably.
Filter first on tank and borehole water
Tank and borehole water is the most common reason drip systems clog. A good screen or disc filter, sized for the flow, is not optional here. Fit it at the source and clean it periodically and the whole system lasts far longer.
What does an irrigation system cost?
Cost depends on the size of the garden, the number of zones, and whether you add a smart controller, tank or borehole integration. As a rough guide, a simple automated system for a small garden starts in the low thousands, while a larger, multi-zone system with a smart controller and tank or borehole integration runs higher. The design and the groundwork matter more than the parts, and a well-designed system pays back in water saved. We quote after looking at the garden and what you want to water.
Common irrigation mistakes
- ✓One zone for the whole garden, so nothing is watered correctly.
- ✓No filter or pressure regulator on drip, so emitters block or blow off.
- ✓Watering in the heat of the day, when much of it evaporates.
- ✓No timer, so watering happens by hand, by habit, and usually too much.
- ✓Spray irrigation over beds, wetting leaves and paths instead of roots.
- ✓Ignoring the source: running drip off unfiltered borehole or tank water.
A well-planned, well-zoned system is the single best thing you can do for a garden's health and your water bill. If you would like it designed and installed properly, our irrigation team designs, installs and maintains water-wise systems across Paarl, Stellenbosch and the Winelands, including borehole and tank integration.
Frequently asked questions
What is the best type of garden irrigation?＋
For most gardens a hybrid is best: pop-up sprinklers for the lawn, where broad even cover matters, and drip through the beds, where water goes straight to the roots with little evaporation. The right mix depends on your garden, which is why zoning it by need is the key step.
What is zoning in irrigation?＋
Zoning means splitting the garden into areas that are watered separately because they have different needs, each with its own valve. A sunny lawn, a bed of water-wise shrubs and a group of pots all want different watering, so giving each its own zone lets every part get exactly what it needs.
How is a garden irrigation system installed?＋
Plan the zones, connect to a water source with the right filter and pressure, fit a manifold of valves (one per zone), run poly pipe to each zone with sprinklers on the lawn and dripline in the beds, add filters and pressure regulators, wire the valves to a controller, then test and tune the run times.
Do I need a filter for drip irrigation?＋
Yes, especially on borehole or tank water, which carries more sediment than mains. A screen or disc filter sized for the flow stops emitters blocking, and a pressure regulator stops them blowing off. Skipping filtration is the most common reason drip systems fail.
Can I run irrigation from a borehole or tank?＋
Yes, and many Winelands gardens do to save water and keep going through restrictions. The important part is matching the pump and pressure to the system and fitting proper filtration, because unfiltered borehole and tank water will block drip emitters. We integrate systems with boreholes and tanks routinely.
What does a garden irrigation system cost?＋
It depends on the garden's size, the number of zones, and whether you add a smart controller, tank or borehole integration. A simple automated system for a small garden starts in the low thousands; a larger multi-zone system with a smart controller runs higher. Good design saves more water than cheap parts save money.
When should irrigation run?＋
In the cool pre-dawn hours, usually early morning, when evaporation and wind are lowest so the water reaches the roots. A timer or smart controller handles this automatically, and a rain sensor stops it running after a downpour.