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New priority species lists in the ACT

16 Mar 2025

Hello NatureMaprs!Three new priority species lists of exotic freshwater and terrestrial invertebrates, and vertebrates in the ACT have been added to NatureMapr. Uploading records of these species to N...

NatureMapr now receives more records in NSW than ACT

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Discussion

waltraud wrote:

Yesterday

Kathy, unfortunately they fruit; see Pyrus calleryana (Callery Pear)
I assume they produce fruits since 4 - 5 years.
I can't nail down the exact time of planting of Callery pear along the street; the Fair was developed in 2011/12 (use Google Earth or ACTMapIi) and landscaping happened concurrently.
I'm not sure at which age CP begin to produce fruits but if planted as advanced stock it might take only 5-6 years before they develop fruits.
we observe large flocks of starlings from time to time, they are also new to the area as well as the Black Birds

Pyrus calleryana

Katy wrote:

Yesterday

Thank you. Thank goodness they have not reached a size that they are fruiting yet.

Btw, In my previous comment I actually meant to say it is good to know which bird species are spreading the seed. In Ohio they identified an exotic bird (starling) and a local bird as the main seed dispersers.

Pyrus calleryana

Mike wrote:

Yesterday

I have just been to Forest 87 at the National Arboretum. This is Callery pear 'Chanticleer' planted in 2009. There is fruit on the trees and some suckers. I will add this sighting for information.
The Pyrus calleryana and Pyrus sp. I have reported in nature reserves are young plants - I have not seen flowers yet and there are no suckers.

Pyrus calleryana

Katy wrote:

Yesterday

Thank you

Pyrus calleryana

Katy wrote:

Yesterday

Thank you.

It is good to know which species in Australia seem to be spreading the seeds.

It is also good to see the time frame in Australia for the CP to go from Introduction to Establishment to Lag and then to Spread, which are the stages that invasive weeds go through before they reach the Ecological Impacts, and then Human Impacts stages. You have the dates that the development and planting happened.

So it is now well into the Spread stage, which started 3 years ago. So it took about ten years for the Spread stage to start.

I hope we can get this stopped before the Ecological Impact stage starts.

Pyrus calleryana