Ceratophyllum demersum (Hornwort) Pond Oxygenating Plant - Pack of 5
Ceratophyllum demersum (Hornwort) Pond Oxygenating Plant - Pack of 5
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Frequently Asked Questions
What is Ceratophyllum demersum used for in a pond?
What is Ceratophyllum demersum used for in a pond?
It's grown mainly as an oxygenator, helping maintain oxygen levels in pond or lake water.
How deep can I plant it?
How deep can I plant it?
It can establish anywhere from 30 cm to around 200 cm deep, which suits both pond margins and deeper lake water.
Does it need to be weighted down?
Does it need to be weighted down?
Yes, weighting is recommended to secure the plant in the required location, since it otherwise floats freely.
How many come in a pack?
How many come in a pack?
Each pack contains five hornwort plants, supplied loose.
Will I get a full-size plant if I order out of season?
Will I get a full-size plant if I order out of season?
Out-of-season stock may be available but could be cut back rather than full length, so expect some variation at those times.
You receive a free-floating pond and lake plant that suits deeper water where many oxygenators struggle to establish. It helps maintain oxygen levels in the water, and weighting it down keeps it anchored in one spot rather than drifting. As a native UK species, it suits naturalistic planting in ponds or lakes of any size.
Ceratophyllum demersum, commonly known as Hornwort, is a free-floating oxygenating plant that doesn't need to be rooted into the substrate to grow. That makes it suited to ponds and lakes, including deeper water where plants that need firm rooting can struggle to establish. As a strong oxygenator, it helps maintain oxygen levels in pond or lake water.
Each pack contains five hornwort plants, supplied loose, giving you enough material to start establishing coverage across the pond or lake. It's also a native UK plant, which suits naturalistic planting schemes rather than more formal aquatic displays.
Growth is medium-paced, so expect steady coverage through the growing season rather than a sudden takeover. Left unweighted it will drift freely with water movement, so weight it down if you want it to stay in a particular spot.
| Specification | Detail |
|---|---|
| Sun/Shade | Full sun to part shade |
| Flowers | May to Jul |
| Colour | Brown |
| Growth rate | Medium |
| Care instructions | Best weighted to secure the plant in the required location. Remove excess growth if necessary. |
| Native | Native |
| What's included | Pack of 5, supplied loose. |
| Planting depth | 30-200 cm |
Delivery information
These plants are delivered to selected UK mainland postcodes.
Delivery charges for these plants
- £6.00 for plant orders weighing up to 1.9 kg in total.
- £9.60 for plant orders weighing over 1.9 kg, up to 30 kg.
This charge covers the plants in your order. Other items in the same order may be delivered separately, with their own delivery charge.
Delivery is not available to certain postcode areas, including parts of Scotland such as the Highlands and Islands, and other restricted locations, including Northern Ireland, the Isle of Man and the Channel Islands.
The delivery options and charges available for your address are shown at checkout.
From October to February, orders are dispatched on Tuesdays only. Plants ordered outside the growing season may arrive cut back.
Express Delivery is not available for these products.
Flexible payment options are available at checkout.
You can choose to pay in full or spread the cost using PayPal Pay Later or Shop Pay, depending on eligibility.
