More than a car park

Car parks used to be car parks and nothing more, end of story.  Today, however, you are much more likely to find them fringed with trees and flowers. We’ve woken up to the potential to make much better use of these spaces in our villages, towns and cities.

I was reminded of this recently when I received an update about the excellent raingarden work in Kinross, which continues with boundless enthusiasm.

You may recall that the first phase of the Kinross Park & Ride Raingarden project was given the prestigious Susdrain UK Community Award in 2022. This was in recognition of a trial of perennial and annual native wildflower plantings as part of a new raingarden in the middle of the Park & Ride car park. It’s been good for nature and a rather pleasant consequence is that the council only needs to cut this area annually instead of 16 times a year. And it looks good visually for those who are passing through, although perennials don’t meet the expectations of the colour blastthat the new annuals created in the first year.

Now, Perth and Kinross Council have approved a further allocation of Nature Restoration Fund money to continue raingardens work in Kinross. Much of the new work will focus on further improving the area around the Park and Ride site, “building on success” you might say.

The green spaces around the Park and Ride are already popular and much appreciated for their nature benefits. The group behind the work are keen to stress that these are biodiversity improvement measures rather than cost-cutting practices. And the work isn’t finished. Moves are afoot to stop herbicide applications and bring an end to the bare soil strips of the car park edges, including the small ‘islands’ in the centre. Instead, the vision is to have pollen and nectar rich vegetation which would be maintained by the Council with an annual cut-and-remove regime where needed. Some occasional weeding of edges may be needed, and advice is being sought for suitable plants to establish there instead of the weeds.

There are two heavily shaded areas on the fringes of the car park, where it looks possible to introduce woodland floor flora more appropriate to the locality and soil. For those who know the area this is in effect the long edge of the car park beneath existing well-established tall trees.

Thought has been given to not only pollinator provision but the aesthetic value of the area for residents whose houses overlook the front of the car park. For that less shaded front edge of the car park therefore, swathes of colour from spring flowering bulbs are also proposed. This will complement the existing Kinross in Bloom containers on the hard surface near the bus stop.

The Park and Ride is the start of the Kinross Raingardens Trail. In parallel with the improvements for pollinators at the Park and Ride, work has been scheduled to enhance the wetlands along the Raingardens Trail on Junction Road. Two constructed wetlands there take overflow drainage from a wildflower-rich set of swales which serve the central length of Junction road, as well as a cluster of commercial properties. Over the years since the wetlands were created, extensive growth of reedmace (Typha latifolia) had suppressed other plants and wildlife. The benefits of last year’s work there should become apparent in spring this year; there will be a buzz of excitement there, hopefully! Early growth looks promising in particular for yellow flag, purple loosestrife, and lesser reedmace amongst others.

A third constructed wetland was created in spring 2023, in an area designated as a flood water space for extremely high flows in the local South Queich river tributary of Loch Leven. Additional work is scheduled there for February 2024, creating another new pond, and seeding with native water margin species. Again, it is anticipated that spring 2024 will be an exciting time to see the emergence of a variety of wild flowers and other native plants, as well as the associated insects and other animals. Already in January ladies smock is growing well, from plugs planted in new scrapes last year, as plugs of purple loosestrife and marsh marigold. This previously neglected area will become a biodiverse treasure on the edge of town, surrounded by a mix of housing, commercial and industrial development and road infrastructure.

It’s this healthy desire to work to enhance the habitats and waters of Kinross-shire and Loch Leven, but simultaneously also strive for further improvement, which has made such a difference. And the improvements are stretching beyond the park and ride and the Raingardens Trail. At the Kinross rugby club, work has begun to create a biodiverse hedgerow swale along the car park edge in spring, tapping into the knowledge gained from earlier swale projects in Kinross. The car park extension and the club-house work have taken rainfall runoff away from the local combined sewer, into the swale system. The project is looking for more green infrastructure projects to help further with removing rainfall input to old sewers which overflow into Loch Leven from Kinross, a National Nature Reserve and Ramsar Wetland.

The group would love to have information signs on site to explain the changes and the benefits. These are likely to stress that the works here help deliver the national pollinator strategy. A sign of the times you might say.

Further reading:

Kinross Raingarden’s Trail

Making wildlife connections at Dance Connect

All images above Copyright (c) C A G Lloyd

(Left)Park & ride in summer, and right – Dance connect pollinators patch
Lesser celandines
Red campion
Bluebells grown from Scotia Seeds and
transplanted in the Dance Connect wooded mound. 

Things can only get better

The infrastructure in and around our built environment can help society tackle issues as crucial as biodiversity loss and climate change.  Raingardens are an enlightened infrastructure solution offering multiple benefits.  The good news is that Scotland has shown a keen interest in the concept of raingardens, as a standard method of dealing with surface water management, flood alleviation and greenspace creation.

It is probably safe to say that in Scotland we take a steer from successful projects based in Melbourne, Philadelphia and Portland, where there has been a growing acceptance of the value of raingardens as a viable answer to water management and environmental challenges.

The Kinross-shire Civic Trust Raingardens Challenge is an ambitious project which seeks to harness the potential of using greenspace wisely in our town and villages to create a bank of raingardens which are valuable landscape features whilst soaking up rainfall draining off roads, roofs and other impervious areas. 

Raingardens are certainly as desirable from a practical perspective as they are an aesthetic one. Incidences of flash flooding have increased alarmingly in recent years, and a deal of concern has been centred on the significant impact of the growth of hard landscaping approaches in domestic and industrial settings.

Raingardens are vegetated features designed to slow down and use rainwater. They use plants, soils and the landscape to hold onto the rainwater and then slowly release it. They also help reduce the amount of water which gets to the sewer. Some water is taken up by the plants, some rainwater finds its way back down into the ground, and some water will evaporate. Raingardens also help clean the water, which may have picked up dirt from the roofs and roads.

The objective of the Raingarden Challenge encompasses improvements such as adding wildflower and grassland areas along with more traditional planting with a wetland emphasis.  This multi-layered response is sensibly flexible to suit individual circumstances, but the consistent goal is the need to soften a built environment which at its most harsh can deliver a landscape often almost devoid of plants.  Sympathetically planted and naturally-sculpted landscapes can effectively absorb rainfall runoff, thus contributing notably to managing increasing flood risks.  When carefully designed, raingardens visibly help mitigate the potential impact of flash floods which are a disturbing reality as climate change bites home.

There is general acceptance now that the presence of planted areas assists the absorption of rainfall draining quickly from a hard-surface. Indeed a good example of this approach can be found in the Kinross area where wildflower swale has been installed at the edge of the link road in West Kinross. The consensus is that the impact is extremely positive.

The Kinross-shire Raingardens Challenge has an admirable sense of proportion and realism. They know they can’t deliver everything working in isolation. They are thus actively engaging with Perth and Kinross Council, local businesses, and individuals to see if they can encourage partners to consider installing raingardens or making modifications to their drainage systems which would deliver improved rainwater management. 

To this end they have invited business to get in touch with them if they suffer from a regularly flooded car park, for example, with a view to persuading the next solution to avoid simply going for a conventional reinstatement by exploring options to see if there is a viable raingarden solution.

Likewise if residents notice a road gully which is regularly failing, the group suggests communities contact their local councillors to probe the possibility of considering a raingarden instead.

Kinross-shire folks can certainly be persuasive. They recently worked with the famous Loch Leven’s Larder on an innovative way to transform the popular visitor attraction’s carpark into a series of small raingardens, and are actively working with the Kinross Estate (particularly the Green Hotel in Kinross) and others.  

Progress has been delayed by COVID, but agreements to pick up a.s.a.p. are encouraging. The Kinross-shire initiative is following a broad and inclusive definition of a raingarden: “ green infrastructure feature designed to accept rainfall runoff”.  Solutions are best when the features are linked to more optimal green features (grassland, hedgerows or woodland for example). Verdant verges can complement a roadside swale, especially if forming a gentle fringe to merge into the swale. In a recent survey some of the area’s local country road verges fell under the microscope. 

The results were interesting. In Carnbo (near Crook of Devon) 96 species were counted along a section of the Gelvan road, and over 70 species were logged near Westfield. In both examples water was able to run off tarmac into various verge types and several of the ditches examined were found to contain marsh species and tall grass species.

There is an admirable realism rooted in the Kinross-shire Raingardens project. The group are keen to acknowledge and celebrate good practice by participating businesses and households. Through a series of awards the intention is to convince more and more observers to see the value of going down this route. Nevertheless, not every green infrastructure project succeeds first time, or indeed every time, and this is acknowledged by a commitment to include ongoing managements and restoration of failed projects in their approach.

When the group issued a newsletter article recently they ran with the catchy headline of “I beg your pardon, I never promised you a raingarden”.  Based on their practical approach and sound vision they might need to dust down another upbeat song title– perhaps, the line from D:Reams ‘Things can only get better’ might appeal?

Further Reading:

Find out more from Brian D’Arcy via b.darcy@btinternet.com see NatureScot’s guidance on including green infrastructure solutions in the Planning and Construction sector 

And the joint WWT/RSPB publication on SuDS


Images courtesy and copyright of Brian D’Arcy