How to Set Up a Garden Pond

Creating a garden pond is one of the best ways to transform your outdoor space while supporting wildlife. Whether you want a peaceful water feature, a wildlife haven or a pond for fish, careful planning will help your pond thrive for years to come. This guide covers everything you need to know to set up a healthy, balanced pond.

Step 1: Choose the Right Location

The position of your pond has a big impact on its long-term health.

Ideally, choose a spot that:

• Receives around 4–6 hours of sunlight each day.

• Has some afternoon shade during the hottest months.

• Is away from large trees to reduce falling leaves.

• Is on level ground.

• Is easy to access for maintenance.

Avoid placing your pond in full shade, as many pond plants need sunlight to grow and flower.

Step 2: Decide on the Pond Type

There are several ways to build a pond:

• Flexible liner ponds

• Preformed ponds

• Raised ponds

• Wildlife ponds

• Fish ponds

Flexible liners offer the greatest freedom for creating a natural shape and different planting depths.

Step 3: Create Planting Shelves

Most ponds include shelves at different depths to suit different plant types.

Typical planting depths are:

Pond Area	Water Depth
Bog edge	Damp soil
Marginal shelf	0–15 cm
Deep marginal shelf	15–30 cm
Water lilies	30–90 cm (variety dependent)
Deep water	60 cm+

These shelves allow you to grow a wide variety of aquatic plants.

Step 4: Fill the Pond

Once your liner or pond is installed, slowly fill it with water.

If using tap water, allow the pond to settle before adding fish. This gives beneficial bacteria and plants time to establish.

Step 5: Add Pond Plants

Plants are the heart of a healthy pond. They improve water quality, reduce algae and create habitats for wildlife.

Aim to include all four main types of pond plants.

Marginal Plants

Marginal plants grow around the pond edge in shallow water.

Benefits:

• Add height and colour.

• Attract bees, butterflies and dragonflies.

• Help absorb excess nutrients.

• Soften the pond's edges.

Popular examples include:

• Yellow Flag Iris

• Water Forget-me-not

• Ragged Robin

• Brooklime

• Flowering Rush

• Creeping Jenny

Deep Water Plants

Deep water plants grow with their roots well below the surface.

The most popular are hardy water lilies.

Benefits:

• Beautiful flowers.

• Natural shade.

• Help reduce algae.

• Provide shelter for fish.

Aim to cover around 40–60% of the pond surface with floating leaves during summer.

Oxygenating Plants

These plants grow mainly beneath the water surface.

Benefits:

• Improve water quality.

• Absorb nutrients that algae feed on.

• Provide shelter for aquatic life.

• Help maintain a balanced pond.

Popular choices include:

• Hornwort

• Mare's Tail

• Water Starwort

Floating Plants

Floating plants drift freely on the water's surface.

Benefits:

• Reduce sunlight.

• Compete with algae.

• Provide shade.

• Create shelter for fish and insects.

Examples include:

• Water Lettuce

• Frogbit

Step 6: Allow Your Pond to Mature

Resist the temptation to add fish immediately.

Give your pond several weeks for:

• Plants to establish.

• Beneficial bacteria to develop.

• The water to stabilise.

A little patience helps create a healthier pond.

Step 7: Add Fish (Optional)

If you plan to keep fish, introduce them gradually once the pond is established.

Avoid overstocking, as excess waste can encourage algae growth.

Ongoing Pond Maintenance

A healthy pond requires very little maintenance once established.

Simple tasks include:

• Removing fallen leaves.

• Cutting back dead plant growth.

• Dividing overcrowded plants every few years.

• Removing excess blanket weed if it appears.

• Topping up water during prolonged dry spells.

Recommended Planting Combination

For a balanced garden pond, we recommend including:

• 4–8 Marginal Plants

• 1–2 Hardy Water Lilies

• 2–4 Oxygenating Plants

• Floating Plants (where suitable)

This combination helps create a beautiful, low-maintenance pond that supports wildlife and naturally keeps the water healthier.