Remedial Works at Llyn Penrhyn – Boosting Our Floating Wetland

This month we’ve been back out at Llyn Penrhyn on Ynys Mon to carry out some remedial works on our Floating Wetland project with Biomatrix. Although the original planting had established well in places, some of the vegetation has struggled due to exposure to the wind across the lake. To give the plants the best chance of success, we have added new sections of pre-planted matting and carefully relocated the wetland to a more sheltered spot on the water.

The new mats have been planted with a mix of wetland species, including flowering plants like Marsh Marigold, Purple Loosestrife, Water Forget-Me-Not and Water Mint.

While out on the lake we were delighted to see how quickly wildlife is responding. Newts and frogs were spotted among the vegetation, and the wetlands were buzzing with bees and birds making the most of the habitat. It’s a clear reminder of how important even small interventions can be for supporting biodiversity.

What the project is aiming to do

Floating wetlands mimic the function of natural reedbeds. Their dense roots hang into the water, creating shelter for fish and invertebrates, and providing surfaces where beneficial bacteria can grow. This helps improve water quality while supporting a rich web of life.

We’ll continue to monitor how the plants establish over the coming months. With the added shelter and diversity of species, we’re hopeful the floating wetland will flourish and bring long-term benefits for both wildlife and water.