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PLNA e-News: Plants, Pests & Diseases

Maryland Bans Some Invasive Plants, Requires Warning Labels on Others

Wednesday, March 2, 2016   (0 Comments)
Posted by: Gregg Robertson
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Yellow IrisANNAPOLIS - The Maryland Department of Agriculture published a regulation on February 5 (go to page 284) that would create two tiers of banned and regulated invasive plants. The first tier of regulated plants would pose such a significant environmental risk that they would be banned completely from the trade.

The second tier of regulated plants would pose a lesser environmental risk, but would be allowed in the trade only if the plants were accompanied by a warning label or sign at the point of sale. Landscape contractors would be required to advise their clients in writing if a landscape plan they were proposing included any of the second tier plants.

Tier 1 plants that were identified in the regulation are:

(1) Ficaria verna (fig buttercup);
(2) Geranium lucidum (shining cranesbill); and
(3) Iris pseudacorus (yellow flag iris).

Yellow flag iris is the only of these plants commonly seen in the trade.

Tier 2 plants identified in the regulation are:

(1) Euonymus alatus (burning bush);
(2) Ligustrum obtusifolium (blunt-leaved or border privet);
(3) Wisteria sinensis (Chinese wisteria);
(4) Wisteria floribunda (Japanese wisteria); and
(5) Wisteria x formosa (floribunda x sinensis hybrids)

All of the Tier 2 plants are commonly found in the trade.

The comment period closes on March 7, 2016.


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