Nelson Nature Fix
27 September 2021
Welcome to Nelson Nature Fix – a regular snippet of interesting information, events, and stories about Nelson Whakatū's natural environment, and what we can do to look after it.
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Taiwan cherry – A pretty pest
Taiwan cherry (Prunus campanulata) is an invasive weed that poses a real threat to our environment. Its seeds are easily spread by birds, and it can form dense stands in the landscape, preventing regeneration of native species that provide all-year-round food and habitat for our native fauna and insects.
It has become a major pest plant in Aotearoa New Zealand and has the potential to cause problems comparable with old man’s beard, gorse and blackberry, if it is not brought under control.
Taiwan cherry is a deciduous tree that grows up to 10m in height. From late July through to early September, mature trees produce thousands of deep pink flowers that attract pollinators such as bees and tūī. Its leaves are 5-17cm long, staggered, serrated, and thin, and it has shiny, scarlet fruit (1cm in diameter) from October to December.
Taiwan cherry in the Nelson area
Taiwan cherry was officially given eradication status in 2019, making it illegal to sell, propagate or distribute it in the Nelson Tasman region.
This species is a high biosecurity priority, and Nelson City Council is offering free removal if you have this tree on your property. Council contractors will be contacting landowners with known trees over the coming weeks to arrange tree removal.
What can you do?
Council is asking for the support and cooperation of the local community to achieve its goal of Taiwan cherry eradication, and we urge anyone who suspects they have it growing on their property to get in touch to arrange for the tree/s to be assessed.
It is important for the public to notify Council of sites where Taiwan cherry is growing, or has been planted in the past, as seedlings may have spread to neighbouring properties and reserves.
We appreciate that these trees are attractive and that they draw in birds and bees, but these benefits are far outweighed by the disastrous ecological impacts this species will have on our indigenous scrubland and forest ecosystems if left to spread. We recommend replanting with native species such as kōwhai, rātā or tī kōuka (cabbage trees) to benefit the local bird and insect population.
To report Taiwan cherry or to arrange an assessment:
Contact Nelmac directly on 0800 635 622
Email us on nelson.nature@ncc.govt.nz
Or call Nelson City Council on 03 546 0200.
Go to our website for more information www.nelson.govt.nz/taiwan-cherry
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Information on ferret sightings wanted
A ferret was recently trapped along the banks of a stream in the Todds Valley area by a member of one of Nelson North’s community trapping groups.
Although stoats and weasels are often found in the Nelson region, ferrets are very rarely seen, and we are asking that anyone who has caught or seen a ferret recently please get in touch by emailing nelson.nature@ncc.govt.nz
If you’re unsure about how to tell the difference between ferrets and other mustelids, ferrets are the largest of the group, with a body length ranging between 32-46 cm and a tail measuring between 1118 cm. For more information on how to identify a ferret, go to doc.govt.nz/nature/pests-and-threats/animal-pests/ferrets
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Are you part of a community environment or catchment group?
Cawthron Institute wants to hear from you for a first-ever survey of community environment and catchment groups* around Aotearoa New Zealand. The aim is to put the data into an online map so everyone can see each other, and the survey offers groups an opportunity to state their needs, goals, and obstacles to achieving their goals. Findings will be summarised in a publicly-available report, and will provide a stronger evidence base for support from industry and government organisations.
Here’s a link to the survey, (one response per group please). The closing date is 30 September and it takes around 20 mins to complete https://survey.sogosurvey.com/r/CGroups2021
* Community environment and catchment groups are any of the following:
- Community groups engaged in environmental protection or restoration
- Catchment groups (local communities of people working together to understand and improve water quality within a catchment)
- Local land or water-use groups
- Umbrella groups or collectives of any of the above groups
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