Hydroseeding & Erosion Control in North Wales
Delivering hydroseeding, erosion control and ecological seeding for construction and infrastructure projects across North Wales
CDTS North & West delivers hydroseeding, conventional seeding and erosion control across North Wales for highways, infrastructure, development and environmental projects. We work on sites where access, slope, exposure and ecological sensitivity all matter, using the right equipment and seeding method for each location rather than forcing one approach onto every scheme.
HYDROSEEDING
CONVENTIONAL SEEDING
Projects We Have Delivered Across North Wales
North Wales presents some of the most demanding site conditions in the UK: steep highway cuttings through slate and shale, exposed coastal embankments, environmentally sensitive river corridors, and mountain access tracks that restrict plant and vehicle movement. We have been delivering seeding and erosion control projects across this region for over 30 years.
Caernarfon Bypass
Completed: 2024
Location: Caernarfon
Sector: Highways
Client: Tilhill
One of our largest single schemes in North Wales. Hydroseeding across 60+ hectares of new road embankments, cuttings and verges on the Caernarfon bypass. The scale of the project required our 6000L lorry-mounted hydroseeder to maintain programme, with seed mixes specified to suit the local conditions and ecological requirements of the surrounding landscape.
Machynlleth Bridge
Completed: 2024 - Present
Location: Machynlleth
Sector: Highways
Client: Alun Griffiths
A 1km new road alignment around a new bridge in a highly sensitive environmental setting. The specification required local-provenance seed and plants throughout, with CDTS providing hydroseeding, conventional seeding, wildflower/BNG seeding, BFM erosion control and planting of 15,000 trees across 5 hectares. We remain on site for ongoing maintenance, ensuring establishment meets ecological sign-off requirements.
For a detailed breakdown of our approach, view the full A487 Machynlleth Bridge case study
Rhyl Sea Defences
Completed: 2025
Location: Rhyl
Sector: Coastal/Infrastructure
Client: Hollingsworth Bros
Hydroseeding 4 hectares of newly constructed sea defence embankments at Rhyl. Coastal sites demand rapid vegetation establishment to prevent erosion from wind, wave action and surface water before the next storm season. Our hydroseeding process bonds seed and mulch to exposed substrates, delivering germination within days.
A55 Bangor
Completed: 2025
Location: Bangor
Sector: Highways
Client: Alun Griffiths
Hydroseeding and conventional seeding across 8 hectares of the A55 trunk road corridor near Bangor, combined with the planting of 70,000 hedging plants. A substantial programme requiring close coordination with live traffic management and environmental controls on one of North Wales's busiest road corridors.
Caernarfon Sports Facility
Completed: 2025
Location: Caernarfon
Sector: Commercial
Client: McCardle Sport & Leisure
Conventional seeding to 6,000m² of pitch surrounds and landscape planting at a new sports facility in Caernarfon. Demonstrating that our work extends beyond heavy civil engineering into precise amenity seeding where specification compliance and finish quality matter.
SEEDING SPECIALISTS
Services We Deliver Across North Wales
We provide the full range of CDTS North & West seeding and erosion control services to North Wales sites:
Conventional Seeding
For flat, accessible sites where hydroseeding is not required. Mechanical and hand-broadcast seeding to specification, with seedbed preparation, soil amendments and aftercare.
Commercial Hydroseeding
Hydraulic application of seed, mulch and fertiliser with visible germination in 7–14 days under optimal conditions.
Wildflower and BNG Seeding
Species-rich establishment to meet BNG conditions, including local-provenance and brush-harvested seed.
Direct Tree Seeding
Large-scale tree establishment for reclamation and ecological restoration.
Frequently Asked Questions:
How quickly can CDTS North & West mobilise to a North Wales site?
Our base in Cheshire is less than an hour from the A55 corridor and Wrexham. For projects deeper into Snowdonia or the Llyn Peninsula, we are typically on site within a half-day of confirmation.
What equipment do you use on steep or restricted-access sites?
Our 2500L towed hydroseeders reach sites that lorry-mounted machines cannot access — common on narrow rural roads and live trunk routes across North Wales. For major highway and infrastructure schemes, our 6000L units deliver the output needed. We match equipment to the access and scale of every site.
Can you work within Snowdonia National Park and other environmentally sensitive areas?
Yes. Many of our North Wales projects sit within or adjacent to Snowdonia National Park, SSSIs, SACs and sensitive river catchments including salmon and trout rivers. We carry site-specific RAMS and environmental controls for every project, and use local-provenance seed where specified.
When is the best time to hydroseed in North Wales?
The main growing season runs from late March to mid-October, though hydroseeding extends this window by protecting seed from wash-off and frost damage. Autumn seeding is common on highway schemes where earthworks complete in summer.
Do you already work with contractors operating in North Wales?
We have long-standing relationships with Tier 1 contractors in the region, including Alun Griffiths, Jones Bros, Tilhill and others. Repeat appointments from these clients reflect consistent delivery against programme and specification.
Discuss a North Wales Project
Whether you are tendering a highway scheme on the A55, planning coastal erosion protection, or need BNG-compliant wildflower establishment on a development site anywhere in North Wales, we can help.
Send us your drawings, specifications or project details and we will recommend the right seeding and erosion control approach for your site.