Working with gardeners to identify potential invasive ornamental garden plants – testing a citizen science approach

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Abstract

The introduction and use of ornamental plants in gardens is the main pathway for plant invasions globally. High numbers of ornamental plants in gardens may not have started an invasion process yet and are a risk for possible future invasions. Gardeners could be among the first to notice plant traits that have also been recognised to contribute to the potential risk of ornamental plants to escape from cultivation. We asked gardeners in Britain to report ornamental plants that were spreading within their gardens and difficult to control using an online survey. Gardeners submitted 201 records of 121 species of which 104 are non-native in Britain. Most non-native species reported were already recorded and wide-spread in Britain outside cultivation, but about a third are not widely distributed, and eight species are not known outside cultivation.
Gardeners’ control efforts were mainly directed to confine plants from further spread, but they also tried to eradicate many of the reported plants. Our results provide evidence that gardeners’ knowledge could help to identify potentially problematic invasive plants early in the invasion process. Even with low levels of participation all evidence collected would be very valuable in official risk management procedures as well as supporting legal obligations on early detection, surveillance and monitoring. At the same time, however, raising awareness of the problem by actively collaborating with gardeners could be of equal importance for the prevention of ornamental plant invasions in the future.
Original languageEnglish
Pages (from-to)3069–3077
Number of pages9
JournalBiological Invasions
Volume20
Issue number11
Early online date11 May 2018
DOIs
Publication statusPublished - Nov 2018

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gardeners
ornamental plants
garden
gardens
United Kingdom
testing
monitoring
risk management
citizen
science

Bibliographical note

The final publication is available at Springer via https://dx.doi.org/
10.1007/s10530-018-1759-3
Copyright © and Moral Rights are retained by the author(s) and/ or other copyright
owners. A copy can be downloaded for personal non-commercial research or study,
without prior permission or charge. This item cannot be reproduced or quoted extensively from without first obtaining permission in writing from the copyright holder(s). The content must not be changed in any way or sold commercially in any format or medium without the formal permission of the copyright holders.

Keywords

  • Ornamental plants
  • plant invasion
  • Citizen science
  • Garden
  • Horticulture
  • non-native plants
  • Great Britain

Cite this

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title = "Working with gardeners to identify potential invasive ornamental garden plants – testing a citizen science approach",
abstract = "The introduction and use of ornamental plants in gardens is the main pathway for plant invasions globally. High numbers of ornamental plants in gardens may not have started an invasion process yet and are a risk for possible future invasions. Gardeners could be among the first to notice plant traits that have also been recognised to contribute to the potential risk of ornamental plants to escape from cultivation. We asked gardeners in Britain to report ornamental plants that were spreading within their gardens and difficult to control using an online survey. Gardeners submitted 201 records of 121 species of which 104 are non-native in Britain. Most non-native species reported were already recorded and wide-spread in Britain outside cultivation, but about a third are not widely distributed, and eight species are not known outside cultivation. Gardeners’ control efforts were mainly directed to confine plants from further spread, but they also tried to eradicate many of the reported plants. Our results provide evidence that gardeners’ knowledge could help to identify potentially problematic invasive plants early in the invasion process. Even with low levels of participation all evidence collected would be very valuable in official risk management procedures as well as supporting legal obligations on early detection, surveillance and monitoring. At the same time, however, raising awareness of the problem by actively collaborating with gardeners could be of equal importance for the prevention of ornamental plant invasions in the future.",
keywords = "Ornamental plants, plant invasion, Citizen science, Garden, Horticulture, non-native plants, Great Britain",
author = "Katharina Dehnen-Schmutz and Judith Conroy",
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