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Not all buckthorn cultivars are invasive species
The fern-leaf cultivar is marketed as a screening shrub and is essentially sterile, unlike common buckthorn that spreads through bird-dispersed berries.
- Don Kinzler of NDSU Extension-Cass County clarifies that Fine Line buckthorn is a distinct, non-invasive species, unlike the invasive Common buckthorn, Rhamnus, which has become an ecological plague.
- Originally introduced in the 1800s, Common buckthorn crowds out native vegetation and spreads rapidly as birds distribute its berries, making it difficult for gardeners to control.
- Fine Line is essentially sterile, and Proven Winners markets the plant as a non-invasive, columnar shrub. Kinzler notes he has grown it for about 10 years without seeing evidence of seed production enabling spread.
- Out of an abundance of caution, some states restrict the sale of Fine Line, conflating it with the invasive Common buckthorn species despite its non-invasive nature.
- Addressing valid concerns from Marsha, Kinzler emphasizes that gardeners should distinguish between these species and encourages questions directed to NDSU Extension-Cass County for expert guidance.
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17 Articles
Coverage Details
Total News Sources17
Leaning Left0Leaning Right10Center4Last UpdatedBias Distribution71% Right
Bias Distribution
- 71% of the sources lean Right
71% Right
C 29%
R 71%
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