Invasive Specieswoody nightshade

Solanum dulcamara
FOUND by 18pw
ID Confirmed
Quality checked by Ms H
Peer reviewed by VM
Field Notes
Field Notes: The area we were researching was a developed area on the edge of a large, thick forest. On the other side of the area was a road. The sampling method we used to research this area was transect, but the transect was divided into nine separate squares measuring 5 meters by 5 meters. My group was stationed between flag eight and flag nine. In our square, we found White Birch (Betula papyrifera), Red Maple (Acer rubrum), Goldenrod (Genus Solidago species unknown), Sweetfern (Comptonia peregrina), Orange Jewelweed (Impatiens capensis), and White Pine (Pinus strobus). All of these plants were Native. As for invasive plants, our group located Woody Nightshade (Solanum dulcamara) and Glossy Buckthorn (Frangula alnus). The Woody Nightshade was extremely small and would be easy to take care of. The Glossy Buckthorn was much larger and the largest invasive plant in our sector. Disposing of this seems to be more of a challenge. However, the invasive plants were found in the rocky area of our sector, and a few of the native plants were farther into the forest. The native plants in the forest were thriving, while the plants in the rocks were not. The native plants found in the rocky area were struggling, and so were the invasives. The interaction between the invasive plants and the native plants was subtle but present. In the rocks, all of the plants were struggling to survive, but there were invasive plants in the rocks. Those invasive species were stealing nutrients and soil from the native plants, causing all of the plants to suffer. If those plants were removed, the native plants would be able to absorb more nutrients and grow larger and healthier. The health of the sector depended on where the plant was. In the forest, all of the plants were thriving and healthy. In the rocks, few plants were healthy and all of the plants were quite small. Overall, the invasive species were a small threat to the native species in the forest, but a larger threat to the native species in the rocks.
Supporting Evidence
Photo of my evidence.
A cluster of about seven berries that start green and ripen to red. This plant cannot be confused with the deadly nightshade which has berries that start green and ripen to black.
Photo of my evidence.
A small arrow-shaped leaf that is purple-green. The leaf has wavy edges and a simple leaf type.
Photo of my evidence.
Leaf is 4.5 centimeters long, which is characteristic of the leaf size of the woody nightshade.
Species Observation: Species Looked For
Did you find it?: 
I think I found it
Scientific name:
Solanum dulcamara
Common name:
woody nightshade
Sampling method: 
Photo of our sampling method.
Place Studied
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Map this species
N 43.736660 °
W -70.275460 °
Observation Site Information
A photo of our study site.
Upland - Developed areas
Trip Information
2018 School Site Forest Edge
Trip date: 
Thu, 2018-09-13 07:26
Town or city: 
Type of investigation: 
Species Survey


Great work, 18pw. Your clear photos and well-selected details clearly show that you found solanum dulcamara. I'm glad to see that it only took up a small portion of your area. Keep your eyes out for more signs of this invasive plant!