Tapestry lawn

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A tapestry lawn in Avondale Park, London. The area was previously grassed parkland. Tapestry lawn at Avondale Park Summer.jpg
A tapestry lawn in Avondale Park, London. The area was previously grassed parkland.

A tapestry lawn (also referred to as a grass-free lawn) [1] is a lawn made from a variety of different mowing-tolerant perennial forb species. The overall visual effect of the many species of plants grown together is referred to as a tapestry.

Contents

The format is based on research carried out at the University of Reading by Lionel Smith. Developed with a temperate humid oceanic climate in mind, it applies ecological principles and horticultural practices to address some of the ecological and environmental issues associated with traditional grass lawns. [2] [3] [4] Compared to a grass lawn, tapestry lawns have a higher biodiversity, of plants and pollinators alike, and need less mowing.

More diverse swards are generally more resistant to weeds, and improve soil nutrient retention, as different plants fill complementary niches. [5]


Management

Tapestry lawn freshly mown, Reading University Tapestry lawn freshly mown.JPG
Tapestry lawn freshly mown, Reading University

The traditional practice of mowing is the key management tool for tapestry lawns. The need for a tapestry lawn to be mowed is reduced by up to two-thirds compared to traditional mowing regimes [6] because of the absence of grasses and the growth patterns of forbs. A consequence of this is that greater numbers of both plant and insect species are able to inhabit the lawn. [7]

Mechanisms

Tapestry lawn of British native species and nativars. Tapestry lawn image 1.jpg
Tapestry lawn of British native species and nativars.
Tapestry lawn in autumn, Reading University Tapestry lawn mixed autumnal foliage.JPG
Tapestry lawn in autumn, Reading University

In tapestry lawns, mowing not only operates to maintain a low, lawn-like aesthetic and indicate ongoing care and management; it repeatedly modulates the light environment and intentionally creates physiological stress to the lawn plants. The relatively taller plant species used in a tapestry lawn, such as creeping buttercups ( Ranunculus repens ), gradually take up more of the available light as they grow, creating internal shade within the lawn and stressing the lower-growing plants e.g. Bellis perennis (daisy). When mowing is applied it removes the taller growth. This allows light to reach the light-starved low-growing plants and substantially stresses the tall plants by reducing their size and photosynthetic area. The plants cut by the mower stop growing and use reserves of carbohydrates to repair the damage. Once the damage has been repaired, they begin to regrow from a reduced-size plant. Meanwhile, the lower-growing and prostrate plants take advantage of the after-mowing window of opportunity to access light previously blocked. In this way both low-growing prostrate plants and the somewhat taller plants can be grown together. Repeatedly changing conditions mean advantage moves from tall plant to prostrate plant and back again in a cycle linked to the frequency of mowing. With no vertical-growing grasses, the need for mowing is substantially reduced. [8] Tapestry lawns do not benefit from added fertilisers or traditional lawn interventions such as raking; these damage the plant community and the lawn and are best avoided.

Biodiversity

A graph showing the more pollinators in a tapestry lawn than in other types of lawns Tapestry Lawn Pollinator Visits.jpg
A graph showing the more pollinators in a tapestry lawn than in other types of lawns

An increase in plant diversity and decrease in mowing can increase the overall biodiversity of a green space. Mowing can cause insect mortality through both the action of mowing and the resulting reduced habitat for insects in the lawn. Reduced mowing regimes enabled by the tapestry lawn format offer protection and more abundant food resources for arthropods than a traditional grass lawn. The combination of multiple forb (non-grass) species extends the availability of pollen and nectar for pollinating insects. A study of pollinator interactions with Tapestry Lawns at Reading University (UK) suggests that they can be visited extensively by pollinating insects with around 80 times more pollinators visiting trial tapestry lawns than conventional lawns.

Access to blooms and long stems gives arthropods safe hiding places to hibernate. [9] [10] Growing a mix of both native and non-native plant species in tapestry lawns has been shown to increase insect abundance and diversity. [7]

Plants

Tapestry lawn composed of native and non-native species. Tapestry lawn image 2.jpg
Tapestry lawn composed of native and non-native species.

Suitable plant species for the tapestry lawn tend to have origins in northwestern Europe, but can include species from other temperate regions: [8]

The primary component species of tapestry lawns all show the capacity for clonal reproduction, usually via runners, rhizomes and stolons. Other component species include those that are able to successfully set seed in a mown environment e.g. daisies (Bellis perennis). Non-clonal species and those that do not manage to set seed in a mown environment can also be used, although these may require replacement at the end of their natural lifespan.

Some of the plants used have a role in providing simple ground cover (Leptinella sp) and evergreen cover in winter (Ranunculus repens). Some species can be herbaceous and give autumn foliage colour (Argentina anserina); some produce flowers and extend the floral season from spring to autumn (Veronica chamaedrys, Parochetus communis). The use of cultivars brings foliage effects (Ajuga reptans 'Burgundy Glow'), and allows for lawn gardening – where plants are added and subtracted according to requirements.

A wide variety of plant species is used, with a minimum of twelve different species and no upper limit, since environmentally unsuitable species will soon die out. [11] When more species are used there is greater scope for aesthetic choices, extending floral period and resource opportunities for pollinating insects and less chance of any one species becoming dominant in the lawn.

Establishment

Recently planted tapestry lawn. Reading University. Tapestry lawn recently planted.JPG
Recently planted tapestry lawn. Reading University.

Tapestry lawns can be established using seeds or plugs from forb species. Starting with plugs gives the immature forbs a higher probability of establishment and decreases the competition with germinating grass seeds in the soil seed bank. [12] Plants should be selected for their ability to spread vegetatively, or have high rates of seed survival and germination, in order to cover any bare soil and decrease maintenance and replanting. [6] Plants can be arranged in a random pattern or with a purposeful design. A mixture of colours, heights, textures, and flowering times is used to maximize the aesthetic appeal of the lawn throughout the year. [11]

See also

Further reading

Related Research Articles

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<span class="mw-page-title-main">Weed control</span> Botanical component of pest control for plants

Weed control is a type of pest control, which attempts to stop or reduce growth of weeds, especially noxious weeds, with the aim of reducing their competition with desired flora and fauna including domesticated plants and livestock, and in natural settings preventing non native species competing with native species.

<span class="mw-page-title-main">Lawn</span> Area of land planted with grasses and similar plants

A lawn is an area of soil-covered land planted with grasses and other durable plants such as clover which are maintained at a short height with a lawn mower and used for aesthetic and recreational purposes—it is also commonly referred to as part of a garden. Lawns are usually composed only of grass species, subject to weed and pest control, maintained in a green color, and are regularly mowed to ensure an acceptable length. Lawns are used around houses, apartments, commercial buildings and offices. Many city parks also have large lawn areas. In recreational contexts, the specialised names turf, parade, pitch, field or green may be used, depending on the sport and the continent.

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<i>Ranunculus</i> Genus of flowering plants in the buttercup family Ranunculaceae

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<i>Ranunculus repens</i> Species of plant in the buttercup family Ranunculaceae

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<i>Cirsium arvense</i> Species of flowering plant

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<i>Lupinus perennis</i> Species of legume

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<i>Veronica serpyllifolia</i> Species of flowering plant in the family Plantaginaceae

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<span class="mw-page-title-main">Salt pannes and pools</span> Water retaining depressions located within salt and brackish marshes

Salt pannes and pools are water retaining depressions located within salt and brackish marshes. Pools tend to retain water during the summer months between high tides, whereas pannes generally do not. Salt pannes generally start when a mat of organic debris is deposited upon existing vegetation, killing it. This creates a slight depression in the surrounding vegetation which retains water for varying periods of time. Upon successive cycles of inundation and evaporation the panne develops an increased salinity greater than that of the larger body of water. This increased salinity dictates the type of flora and fauna able to grow within the panne. Salt pools are also secondary formations, though the exact mechanism(s) of formation are not well understood; some have predicted they will increase in size and abundance in the future due to rising sea levels.

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<span class="mw-page-title-main">Clover lawn</span>

A clover lawn is composed of clover and can be used as an alternative to grass lawns. It requires less maintenance than a traditional lawn, uses less water, is more heat tolerant, and fixes its own nitrogen using symbiotic bacteria in its root nodules, removing the need to fertilize. It is less robust to foot traffic than grass, and can stain clothes if bruised. Clover can be oversown on grass if some grass in the lawn is acceptable. If the variety chosen doesn't self-seed efficiently in-place, it may need resowing every few years. If grown continually, it may be susceptible to clover sickness.

<i>Helosciadium repens</i> Species of flowering plants

Helosciadium repens commonly known as creeping marshwort, is a species of plant belonging to the Apiaceae family. It occurs in Western and Central Europe, being rare throughout its range. It grows in wetland areas where it does not have to compete with taller plants due to grazing by animals, periodic flooding during the winter-spring seasons, or mowing. It is considered a species of near-threatened status at the continental level, critically endangered and legally protected in Poland. It is subject to protection within the European Natura 2000 network.

References

  1. "Home". grassfreelawns.co.uk. Archived from the original on 4 August 2013.
  2. Peel, M.C., B.L. Finlayson, and T.A. McMahon, Updated world map of the Köppen-Geiger climate classification. Hydrol. Earth Syst. Sci., 2007. 11(5): p. 1633-1644.
  3. Allen, W., Balmori, D., Haeg, F., Edible Estates: Attack on the Front Lawn.2010: Metropolis Books.
  4. Borman, F.H., D. Balmori, and T.G. Geballe, Redesigning the American Lawn. A Search for Environmental Harmony. 2nd ed2001, New Haven & London: Yale University Press.
  5. Harris, Ciaran; Ratnieks, Francis L. W. (June 2022). "Clover in agriculture: combined benefits for bees, environment, and farmer". Journal of Insect Conservation. 26 (3): 339–357. doi: 10.1007/s10841-021-00358-z .
  6. 1 2 Smith, L.S.; Fellowes, M.D.E. (2014). "The grass-free lawn: management and species choice for optimum ground cover and plant diversity". Urban Forestry & Urban Greening. 13 (3): 433–442. doi:10.1016/j.ufug.2014.04.008 via ResearchGate.
  7. 1 2 Smith, L.S., et al., Adding ecological value to the urban lawnscape. Insect abundance and diversity in grass-free lawns. Biodiversity and Conservation, 2014. 23: p. 1–16.
  8. 1 2 Smith, L. (May 2019). "Tapestry lawns: Freed from grass and full of flowers". CRC Press . doi:10.1201/9780429263217. ISBN   9780429263217 via ResearchGate.
  9. Wastian, L., Unterweger, P.A. and Betz, O., 2016. Influence of the reduction of urban lawn mowing on wild bee diversity (Hymenoptera, Apoidea). Journal of Hymenoptera Research, 49, pp. 51–63
  10. Unterweger, P.A., Klammer, J., Unger, M. and Betz, O., 2018. Insect hibernation on urban green land: a winter-adapted mowing regime as a management tool for insect conservation. BioRisk, 13, pp. 1–29
  11. 1 2 Smith, L.S.; M.D.E., Fellowes (July 2014). "The influence of species number on productivity, ground coverage and floral performance in grass-free lawns". Landscape and Ecological Engineering. 11 (2). doi:10.1007/s11355-014-0264-9. S2CID   255166839 via ResearchGate.
  12. Hitchmough, J.; Paraskevopoulou, A.; Dunnett, N. (March 2008). "Influence of grass suppression and sowing rate on the establishment and persistence of forb dominated urban meadows". Urban Ecosystems. 11 (1): 33–44. doi:10.1007/s11252-007-0041-8. S2CID   30100632 via ResearchGate.