Two Proven Winners ColorChoice barberry varieties have cleared a regulatory hurdle, earning official exemptions from Pennsylvania's barberry restrictions.
© Spring Meadow
Sunjoy Mini Maroon and Sunjoy Todo Berberis have both been recognized as non-invasive by Pennsylvania authorities following a rigorous evaluation process. Sterile cultivars of species on Pennsylvania's noxious weed list must be approved through an application to the Pennsylvania Department of Agriculture. To qualify for an exemption, plants must undergo extensive research and field trials demonstrating they do not spread into natural areas or pose ecological risks, a high bar that few varieties achieve.
Sunjoy Todo and Sunjoy Mini Maroon barberry join Fine Line Rhamnus as plants exempted from the Pennsylvania Noxious Weed List.
These exemptions are a notable milestone for the sterile barberry category, validating years of breeding work aimed at developing landscape-friendly alternatives to traditional invasive cultivars. Plant regulations differ significantly from state to state, with some jurisdictions restricting or outright banning barberry species due to invasiveness concerns.
© Spring Meadow
With this recognition, landscapers, nurseries, and homeowners in Pennsylvania now have expanded access to these compact, low-maintenance shrubs in projects where barberry has previously been off-limits.
The achievement signals growing confidence in sterile plant breeding as a practical path forward for species that have historically faced regulatory challenges.
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