Invasive SpeciesJapanese barberry

Berberis thunbergii
NOT FOUND by BlueHillGardener
ID Confirmed
Quality checked by Kathleen Burgess
Peer reviewed by
Field Notes
We took a ride to the new transportation center in Trenton, ME, which stores the busses being used by Acadia National Park. A 2 mile walking trail has been cleared by the Friends of Acadia; a boardwalk leads to a heath area with wonderful views. The trail was covered with various mosses, bunch berries, blueberries, with a stream and ferns along the edges. The air was crisp with pine needle and moss scents. The leaves were in various colors, the birches displaying lovely yellows against their white bark. I looked for invasive species and did not spot any; I chose a quadrant area for my study.
A sketch of our study site.
Supporting Evidence
Photo of my evidence.
The leaves do not have the single thorn typical of barberry nor do they have the zigzag stem. There was no evidence of the bright red berries either.
Species Observation: Species Looked For
Did you find it?: 
I think I did not find it
Scientific name:
Berberis thunbergii
Common name:
Japanese barberry
Sampling method: 
Quadrat (user-placement)
Photo of our sampling method.
Place Studied
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Map this species
N 44.438889 °
W -68.370556 °
Observation Site Information
A photo of our study site.
Freshwater - In a pond or lake
Trip Information
Acadia Gateway Center
Trip date: 
Sun, 2012-11-04 13:25
Town or city: 
Type of investigation: 
Species Survey
Eastern Coastal
Time of low tide: 


Congrats on 50 post! Keep them coming...I love seeing the visual of all the place you have been around the area.

Happy searching!

Hi BlueHillGardener!

Love that you didn't spot any barberry. Also love your fall description - "The leaves were in various colors, the birches displaying lovely yellows against their white bark."

Did you know that this is your 50th observation published?! Nice. I took a screen shot of all of the places you've been to look for species.

 I'm thankful for your first 50 observations and am cheering you on to 100!

Wow, how great! I love seeing the map of your work all around Acadia! So impressive. Thank you for your contributions to our database!

I'm proud to have met you way back when at the Master Gardener training in Ellsworth. Keep up the great work!


"Fifty! Why'd it have to be fifty!?" --nice going Cool Hand Luke! (apologies if the reference is too obscure)

It's folks like you that make Vital Signs such a great program and community, thanks for all the great observations! You rock (snot) :D


Holy Cow -- 50 observations. WOW -- I've loved every one of them. Vital Signs has kept me outside, hiking and enjoying nature with Blackie tagging alone. I hope to explore every nook and cranny of the Blue Hill peninsula and Acadia and will keep my data coming. Happy fall!

Are those young fir trees in your sampling photo? It's great to see that healthy green color during this very brown time of year.

Yes, they are young fir trees. They are healthy and plentiful and helping to keep our air quality clean; the entire forest shouted of color; the moss was especially beautiful. The area will be open soon with hopes that tourists coming to Maine will find adventure here with their families.