Cuttle Brook, Sunnydale Park
What we did
The creation of the new wetland areas involved a great deal of re-shaping and stabilisation of the banks along the brook and around the ponds. Long-established Chesterfield based landscaping business, NT Killingley were appointed to handle the landscaping, and having a good 17-year working relationship, they in turn asked Green-tech to supply the necessary materials.
The ponds and water course consist of shallow riffles to help oxygenate the water, deeper pools to provide cooler water, along with wide shallow margins to provide warmer water and areas for plants to grow.
For the banks of the brook and ponds, Green-tech supplied nearly 300 metres of pre-established coir rolls, each pre-planted with 18 plants, including carex acutiformis (lesser pond sedge), juncus inflexus (hard rush), lythrum salicaria (purple loosestrife), iris pseudacorus (yellow iris), and Phalaris arundinacea (reed canary grass).
The gtCoir Log Rolls are perfect for establishing natural marginal vegetation around lake edges, streams, and riverbanks. The compressed coir fibre is encased in a woven coir netting and is available either pre-planted as in this case, or unplanted for nature to take its course. Available in 3m lengths, and 200 or 300mm diameter, they provide a stabilising barrier to be built up against, providing both erosion control and rapid vegetation establishment.
For the extended reed beds, 150 metres of coir plant pallets were laid, pre-vegetated with phragmites australis (common reed), that can grow up to 6m tall. Very similar to the Log Rolls, the pallets are compressed into mats 2x1m and can be supplied pre-seeded or natural.
As part of the wetland improvements, the flood basin was planted up with additional trees, resulting in more than were there before the improvement works. Green-tech is the UK’s largest supplier of landscape products, and tree stakes, guards, and belting are some of the biggest selling product lines, not only helping the trees become established, but also protecting them from some of the more herbivorous wildlife.
Completed at the end of 2021, the improvement scheme at Sunnydale Park has resulted in an overall Biodiversity Net Gain and been supported by Derbyshire Wildlife Trust.
Image: Balfour Beatty – planned additional pond