DIY Garden

Which Garden Pump to Choose?

A garden pump draws water from sources such as a ditch, canal, or pond for your sprinklers. If no water sources are available nearby, you can dig a well to use groundwater or collect rainwater in a water tank. Various types of garden pumps cater to every garden and water source.

The Right Capacity

The first consideration when purchasing a garden pump is the amount of water you need to irrigate your garden. To select the right pump, it’s essential to know the flow rate required at a given pressure. The necessary litres per hour depending on factors like the number of sprinklers and the size of the nozzles. A pump with too low a capacity won’t achieve the needed pressure and flow, while a pump with too high a capacity can cause water overflow, potentially leading to damage.

Metabo garden pump

The Water Source

If you have a ditch or canal near your garden, you can use this water for your garden plants. For this, you’ll need a simple self-priming pump, which you place on dry land close to the water source. Ensure no twigs or aquatic plants can enter the pump. Prevent contamination by using a suction filter and drawing water from the surface. Another option is to pump groundwater. If the water is more than 8 metres deep, you will need a borehole pump and a narrow tube placed in a well. To use water from a water tank, it is best to install a special water tank pump.

The Right Pump for Your Sprinklers

Sprinkler on lawn

Sprinklers are crucial when choosing the type of garden pump. Do they need to switch on and off automatically, or do you want to water continuously in a drip manner? Each type of sprinkler requires specific features in a pump. Sprinklers can be divided into three categories:

  • Simple sprinklers: such as fans and oscillating sprinklers.
  • Handheld sprinklers: often in the form of a spray gun.
  • Drip hoses: which continuously deliver a small amount of water.

For the first type, a regular irrigation pump suffices. For category two, an automatic irrigation pump is necessary. The pump must shut off when you release the handheld sprinkler. Using a drip hose requires a reservoir. You’d need a hydrophore pump equipped with a tank to prevent the pump from running as water drips from the hose. The drip hose draws water from the tank, and the pump only activates when the tank is empty.

The Right Hose

A final general tip is to consider the diameter of your garden hose. It is best to use the same diameter as the pump outlet, usually at least 19 mm. This is larger than the diameter of the hose many people use in their gardens, so purchasing a garden pump might require replacing your garden hose. Using a hose with a diameter smaller than 19 mm creates too much resistance, as the pump cannot discharge its water capacity properly. You can read professional advice on choosing a garden hose in this article: Choosing a garden hose: What should you consider?

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