Invasive SpeciesJapanese barberry

Berberis thunbergii
NOT FOUND by Peoples
ID Confirmed
Quality checked by Waltzing Matildas
Peer reviewed by Waltzing Matildas
Field Notes
When we searched our site we weren’t able to find the the Japanese Barberry. We were surprised that we couldn't find it, although we did find a plant that looked very similar. We could tell that it wasn’t a Japanese Barberry because it didn’t have thorns, was less dense, lacked the seasonal berries and purplish-red flowers, and ultimately appears to be almost certainly not a Japanese Barberry.
A sketch of our study site.
Supporting Evidence
Photo of my evidence.
We found a plant that looked similar to the Japanese Barberry but it wasn't. The Japanese Barberry has thorns, an dense round top and can be up to 2 meters tall, fortunately, the plant we found met none of these specifications.
Photo of my evidence.
The leaves on our similar plant were dark green, whereas the Japanese Barberry has purplish-red leaves in this season, and our leaves were bigger and different shaped than the Japanese Barberry.
Photo of my evidence.
The Japanese Barberry would have red berries after September but the plant we discovered did not have red berries and there were no red berries nearby the plant. Instead of berries though it had white flowers, which appears to be quite contradictory to this being a Japanese Barberry.
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: 
Just looking around
Photo of our sampling method.
Place Studied
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Map this species
N 43.935452 °
W -70.447083 °
Observation Site Information
A photo of our study site.
Upland - Field
Trip Information
Frog Pond
Trip date: 
Tue, 2017-10-03 14:19
Town or city: 
Type of investigation: 
Species Survey


I agree that you did not find Japanese barbery, though your photo evidence could be even stronger if there were more close-up photos, and if the photos were clearer.