Fallopia sachalinensis

Giant Knotweed at Paddys River, ACT

Fallopia sachalinensis at Paddys River, ACT - 22 Nov 2013
Fallopia sachalinensis at Paddys River, ACT - 22 Nov 2013
Fallopia sachalinensis at Paddys River, ACT - 22 Nov 2013
Fallopia sachalinensis at Paddys River, ACT - 22 Nov 2013
Fallopia sachalinensis at Paddys River, ACT - 22 Nov 2013
Request use of media

Identification history

Fallopia sachalinensis 28 Jan 2015 MichaelMulvaney
Unidentified 12 Jan 2015 galah681

Identify this sighting


Please Login or Register to identify this sighting.

User's notes

Near large granite outcrop between Rock valley homestead and the Tidbinbilla river

5 comments

galah681 wrote:
   13 Jan 2015
This could be Fallopia japonica - Japanese knotweed. It is affected by frost but recovers each year. It only seems to occur in one small area and has not spread. It could have been planted by the original Rock Valley owners for horse feed.
   26 Jan 2015
Jenny are the leaves on this bigger than your hand?
galah681 wrote:
   26 Jan 2015
Yes. Some are very large.
   28 Jan 2015
Jenny based on the large leaf size and flower arrangement I think this is Giant Knotweed Fallopia sachalinensis
galah681 wrote:
   31 Jan 2015
Thank you for identifying this weed. Now we have to see if anything can be done to remove it as there seems to be a lot more this year - it must like the rain and cooler conditions. It is interesting that Plantnet actually mentions its occurrence at Tidbinbilla.

Please Login or Register to comment.

Nearby sightings

Page 1 of 1 - image sightings only

Location information

Sighting information

  • 1 - 3 Abundance
  • 22 Nov 2013 11:15 AM Recorded on
  • galah681 Recorded by

Additional information

  • True In flower

Species information

Record quality

  • Images or audio
  • More than one media file
  • Confirmed by an expert moderator
  • Nearby sighting(s) of same species
  • GPS evidence of location
  • Description
  • Additional attributes
2,154,184 sightings of 19,955 species in 6,498 locations from 11,452 contributors
CCA 3.0 | privacy
We acknowledge the Traditional Owners of this land and acknowledge their continuing connection to their culture. We pay our respects to their Elders past and present.