Keep Your Water Clear & Healthy

Adding oxygenating plants to a small pond is one of the easiest ways to maintain clear, healthy water. These plants naturally release oxygen, helping to keep the water fresh, prevent algae buildup and support wildlife. In small ponds and container ponds, where there is limited water movement, oxygenators work hard behind the scenes to improve water quality. By absorbing excess nutrients, they reduce the risk of green, murky water and help to create the perfect environment for frogs, newts and insects. If you look closely, you may even spot tiny bubbles rising from the stems as the plants photosynthesise beneath the surface, working away to keep your pond in balance.

Bunched vs. Potted Oxygenators – Which Should You Choose?

When selecting oxygenating plants for small ponds, you’ll find they come in two main types: bunched or potted. Bunched oxygenators, like Hornwort, come as loose stems tied together. These can be dropped directly into the water, where they will take root naturally. They are great for creating instant oxygenation and wildlife cover. Potted oxygenators, such as Dwarf Hairgrass or Mare's Tail, are planted in aquatic baskets and placed on pond shelves. These offer a more structured look, making them ideal for container ponds or shallow water areas where you want more control over placement.

The Best Oxygenators for Small Ponds

Choosing the right oxygenators for a small pond is important to avoid fast-growing plants taking over. That’s why we’ve carefully selected a collection of slow to medium-growing oxygenators, perfect for shallow ponds and container ponds.

• Hornwort – A free-floating oxygenator that thrives in all conditions, offering excellent algae control.
• Water Crowfoot – Produces pretty white flowers and prefers cooler, shadier ponds with gentle movement.
• Dwarf Hairgrass – Compact, potted oxygenators that provide excellent oxygenation and habitat for pond life.

For the best results, aim for five bunches per square metre of water or up to five potted oxygenators per square metre. Oxygenators work best when paired with floating plants, marginals, and waterlilies, which provide additional shade and shelter, helping to create a balanced, healthy small pond.

Oxygenators Help All Kinds of Wildlife

A clear, well oxygenated pond benefits far more than just the plants and fish. Newts, frogs and insects use oxygenating plants as hiding spots and egg-laying sites, while dragonfly larvae shelter amongst the stems. A healthy pond surface also makes it easier for passing birds to bathe, while hedgehogs and other small mammals will stop by for a safe, clean drink. You might even find your cat or dog prefers pond water over their bowl - proof that a well-planted pond is fresher and more inviting than you might think!

Whether you’re starting a small garden pond or a patio container pond, adding oxygenating plants for small ponds will help keep your water clear, fresh, and full of life.