Clearing away pond vegetation.

Four tips for summer pond maintenance

Discover four ways to keep your pond looking spick and span in summer, with our pond maintenance tips.

As with any part of the garden, a pond will need regular maintenance to keep it weed free with the plants in it kept to scale. The extra dimension in a pond is the water itself.


Clear, non-smelly pond water without a pump and filtration system relies on the correct balance of plants to water. All ponds green up a little when the water warms up but don’t panic – if the balance is right it will quickly clear again. The removal of seedheads will also help reduce weeding and thinning in the future.

Weed between marginal plants as you would between border plants, making sure to take out unwanted seedlings as you go. Leave anything that you’ve taken out next to the pond for a few hours so any creatures can make their way back in before composting the waste vegetation.

Discover four tips for summer pond maintenance, to keep it spick and span, below.

Leave anything that you’ve taken out next to the pond for a few hours so any creatures can make their way back in.

Top up the water

Top up water as it evaporates in summer, causing the level to drop. Ideally use rainwater from a butt around once a week or as needed. If you only have tap water available add smaller amounts more often. Take a look at our six ways to save water in the garden, so you always have a supply of rainwater to use.


Clear decaying vegetation

Clear decaying vegetation, including that from water lilies, which increases nitrogen levels, turning water green while building up a layer of sediment at the bottom, which can make the pond smell. Remove dead or dying foliage frequently.


Remove pond algae

Remove pond algae, such as blanket weed, which spreads quickly and can choke a pond. Do it by hand or use a bamboo cane, twiddling it around and then taking out the smaller bits with a net. Here are our tips on how to deal with duckweed.


Reduce oxygenators

Reduce the volume of oxygenators, such as this hornwort, when they fill more than one third of the pond. These are essential for ponds and keep the water sweet, but they need to be prevented from taking over.


Not got a garden pond? Here’s how to build your own garden pond.