Futureproofing parks and greenspaces beyond COVID-19: The role of colour and naturalness

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By Helen Hoyle

Last month I commented on how the Covid-19 pandemic has highlighted the value of private gardens, public parks, green and blue spaces. Many people now have a heightened awareness of how important access to ‘urban nature’ in these spaces is for their physical and mental wellbeing. To reinforce the significance of this to UK decision makers, the monetary value of these spaces is increasingly reported, for example, recent UK research estimating the human well-being value associated with frequent use of local parks and green spaces at £34.2bn/yr1, with the NHS saving £111m/yr1 based solely on reduction in GP visits.

Yet less attention is paid to the pathways between ‘nature’ in parks, gardens and green and blue spaces and human wellbeing. What type of nature is most supportive of human wellbeing, and do different types of urban planting invite or provoke different human reactions? Do people find the same sorts of environments both attractive and mentally restorative? A growing body of research, including my own, is now addressing these questions.

I previously conducted questionnaires with over 1400 members of the public who walked through woodlands, shrubs and herbaceous planting at 31 sites including public parks, green spaces and institutional gardens in England. This research2 revealed a critical threshold flower cover of 27% as key to provoking the ‘wow factor’ amongst the visiting public. Most people found colourful flowering plants stimulating and exciting, whereas green vegetation formed a background and was conducive to relaxation. This is extremely important for planting designers, because focal displays of vibrant, flowering plants can be strategically positioned to provoke human delight, yet green background planting must be prioritised elsewhere to support mental restoration.

Vibrant planting with a flower cover of 27% or above generates the ‘wow factor’
Subtle greens create a background for quiet reflection and relaxation

Considering the relative naturalness of urban planting, research from an extensive Europe-wide study3, has confirmed ‘broad support for biodiversity’, and an appreciation of a wilder, less managed form of urban nature in our parks and gardens. This is good news at a time when austerity makes any alternative impossible in many urban green spaces. UK research4 involving the introduction of perennial meadows in different urban contexts confirmed this. Conducted with stakeholder partners in Bedfordshire, our findings showed that the majority of site users thought that the introduction of perennial meadows to local green spaces had improved their wellbeing. Three key messages for practice were: i) context matters: although people were appreciative of meadows, some preferred neater, short-cut grass immediately outside their homes; ii) once people are aware of the habitat-value of taller meadows to urban invertebrates they are more prepared to accept them, even when they may appear brown and unkempt, beyond the flowering season; iii) ‘Cues to care’ matter: people like to see neat mown edges ‘framing’ an area of longer meadow or grassland, showing the area is being managed deliberately, and allowing access at the edge of footways. This is particularly important in the context of the Covid-19 pandemic, when green space managers need to factor in the need for physical distancing within our valued parks and green spaces.

Meadow-style vegetation is more acceptable to the public if it is framed by mown edges and information on its biodiversity benefits is provided.

1Fields in Trust, (2018). Revaluing Parks and Green Spaces.

http://www.fieldsintrust.org/Upload/file/research/Revaluing-Parks-and-Green-Spaces-Report.pdf

2Fischer et al. (2018). Beyond green: Broad support for biodiversity in multicultural European Cities. Global Environmental Change 49 35-45

3Hoyle et al. (2017). All about the ‘wow factor’? The relationships between aesthetics, restorative effect and perceived biodiversity in designed urban planting. Landscape and Urban Planning, 164, 109-123 https://www.sciencedirect.com/science/article/pii/S0169204617300701

4Hoyle et al. (2017). “Not in their front yard” The opportunities and challenges of introducing perennial urban meadows: A local authority stakeholder perspective. Urban Forestry & Urban Greening, 25, 139-149. https://www.sciencedirect.com/science/article/pii/S1618866716305489

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