Connecticut nurseries to phase out some Barberry cultivars

James H. Miller, USDA Forest Service

Connecticut’s nursery and landscape industry will voluntarily start phasing out the sale and production of 25 Japanese Barberry cultivars over the next three years because of their invasive potential.

Barberry (Berberis thunbergii) is one of the top 25 most popular landscape plants in the state. The Connecticut Nursery & Landscape Association estimates the combined value of these cultivars — wholesale and retail — exceeds $7 million annually. The decision will leave in sale and production at least another 18 versions of the plant considered less invasive.

Read more here.

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Some Vermont nurseries and landscapers advocate for voluntary code of conduct

August 17, 2010, Vermont Public Radio news:
“There’s a recognition that at some point in the future these plants will be added to the state’s quarantine list which will make them illegal to sell. The idea is to get in front of that quarantine list and get them to voluntarily agree to stop selling or designing or installing these plants.” — Dan Redondo, Greenworks

Read more here.

winged burning bush, Euonymus alatus  (Celastrales: Celastraceae) /> </a><a href= Japanese barberry, Berberis thunbergii  (Ranunculales: Berberidaceae) Norway Maple

Above: Some of the invasives on the voluntary “do not sell/do not plant” list have been popular for their autumn coloration: Burning Bush (Euonymus alatus/Leslie J. Mehrhoff, University of Connecticut), Japanese Barberry (Berberis thunbergii/Britt Slattery, USFWS), Norway Maple (Acer platanoides/Britt Slattery, USFWS).

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