Pyrus calleryana
Callery Pear at Symonston, ACT
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| Pyrus calleryana | Mike | 15 Nov 2025 | |
| Pyrus calleryana | Mike | 15 Nov 2025 |
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5 comments
14 Dec 2025
Mike
What diameter is the base of this tree? Rosie Cooney from ONC says "No trees over 5 years old (ca 150mm) have been detected by weeds and biosecurity teams - please do let us know if you see any."
What diameter is the base of this tree? Rosie Cooney from ONC says "No trees over 5 years old (ca 150mm) have been detected by weeds and biosecurity teams - please do let us know if you see any."
6 Feb 2026
abread111 Mike
Not sure what the "5 year" limit is about. we know there are trees older than 5 years growing on public space / nature reserves that have not been planted by humans. And the young trees in the reserve east of the Fair would have grown older if not tackled. Once they achieve reproductive maturity, the invasion would have marched on. The Fair trees have been planted in 2012; it takes while to mature and produce offspring. I think FoMM caught the first invasion wave around 8 years later.
Not sure what the "5 year" limit is about. we know there are trees older than 5 years growing on public space / nature reserves that have not been planted by humans. And the young trees in the reserve east of the Fair would have grown older if not tackled. Once they achieve reproductive maturity, the invasion would have marched on. The Fair trees have been planted in 2012; it takes while to mature and produce offspring. I think FoMM caught the first invasion wave around 8 years later.
6 Feb 2026
The five year and 150 mm circumference is probably just an indicator they are old enough to flower and fruit, as in some specimens on Mt Mugga Mugga. The sighting I posted today Pyrus calleryana (Callery Pear) had fruit. (I had forgotten that I had recorded this previously with flowers and fruit but the ID had been changed to Pyrus sp. so I didn't find it on the website.)
Location information
- Coordinates 149.131208-35.348786
- Altitude 700.0m
- Maps Mount Mugga Mugga
- Places Symonston, ACT
Sighting information
- At least 1 Abundance
- 15 Nov 2025 09:09 AM Recorded on
- Mike Recorded by
Collections
Species information
- Pyrus calleryana Scientific name
- Callery Pear Common name
- Not Sensitive
- Exotic
- Medium weed or pest
- Up to 747.12m Recorded at altitude
- External link More information
Seasonal activity
-
In flower
JFMAMJJASOND
Record quality
Quality score
5 / 7
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- More than one media file
- Verified by an expert moderator
- Nearby sighting(s) of same species
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- Additional attributes