Another Invader to Hate: Chinese Privet

photo from US Dept. of Interior Web site

If you live in the Southeastern United States, you know this shrub even if you don’t think you do. When I was a child in the 1960s, it was the go-to landscaping choice for quick, easy hedges — evergreen, amenable to severe trimming, and impervious to predators and diseases.

Some people claim to enjoy the fragrance of the white clusters of flowers. Frankly, I’ve always thought they stink — and they make me sneeze like I’ve inhaled a snootful of pepper. I hated them even before I knew what they do to our native forests.

Those white clusters of flowers produce big clusters of purple fruits that birds find irresistible. The berries are this invader’s secret weapon. The birds unwittingly spread Ligustrum seeds everywhere, and this shade-tolerant non-native species quickly grows to enormous size, multiplying its numbers as it outcompetes our native forest understory species.

How bad is the problem? Chinese Privet (Ligustrum sinense) is especially aggressive in our wetlands. A wooded creek near a shopping mall I pass often is completely overgrown with Chinese Privet. In winter, the evergreen invaders are especially visible. They outcompete native wildflowers, ferns, and smaller shrubs and trees for light and nutrients, because their evergreen leaves are working year-round. The natives never see the light of day after these bullies move in.

In North Carolina’s Coastal Plain region, many thousands of acres of swamp forest are now dominated by an understory of privet. Biologists note the quantum drop in species diversity — plant and animal — in areas where Ligustrum rules — a biological desert compared to the days before this invader took over. Nothing eats the leaves, and few natives plants can survive where it dominates.

Because my yard is adjacent to a creek and wetlands, I am constantly on the lookout for this invader. I am determined that my wetland will not look like the one near the shopping mall a few miles from my house. Winter is the best time to spot them in the landscape. When a glint of shiny green catches my eye in February, I know it’s either a holly or a privet.

I can pull small privets out of the ground roots and all in moist soil. Bigger specimens (yes, they occasionally manage to hide from me on my five acres) require Wonder Spouse and his mighty Weed Wrench. Don’t even think about cutting them off at the ground; they come right back, sprouting into even bushier specimens than the originals.

I hate them because of what they are doing to the health and biodiversity of my native woodlands. I hate them because they smell bad. I hate them because they are ugly. I hate them!

Plant nurseries still sell privets today. A fancy variegated form is often touted as an elegant landscape addition. Don’t be fooled. There is no such thing as a noninvasive privet. None is native to North America. Infinitely better native hedge shrub options are available. So, please, just say no to Ligustrum, and do your best to eradicate any loitering invaders in your yard.

For more information on this malicious invader, try here.

And if you live anywhere near the North Carolina Botanical Garden in Chapel Hill, NC, you’ll want to stop by beginning on February 25 to see:

“Plant This, Not That—Alternatives to Invasives,” an educational exhibit at the North Carolina Botanical Garden, opens on Saturday, February 25.  The public is invited to attend an opening celebration in the gardens’ Education Center at 1 pm.  Associate Director for Natural Areas and Conservation Programs Dr. Johnny Randall opens the event with a short program about invasive plants. The presentation will be followed by a reception, during which six artists who created the exhibit will be on hand to discuss their work. The event is free, though an RSVP is encouraged: call 919-962-0522.

“Plant This, Not That” consists of a series of panels discussing invasive plant issues and showing examples of ornamental native plants that can be used instead of invasives in gardens and landscapes.  The artists who created the accompanying illustrations are graduates of the Botanical Garden’s Certificate in Botanical Illustration Program: Irena Brubacker, Betsy Lowry Donovan, Glenda Parker Jones, Joanne Phillips Lott, Julia Shields and M.P. Wilson. Their original paintings will be on display during the reception.

The event launches National Invasive Species Awareness Week, February 26 – March 3, the purpose of which is to bring attention to the impacts, prevention, and management of invasive species and to organizations who are working toward healthy, biodiverse ecosystems.

The North Carolina Botanical Garden is located off Fordham Boulevard at Old Mason Farm Road in Chapel Hill.  A unit of The University of North Carolina, it has been a leader in native plant conservation and education in the southeastern United States for more than 40 years. The Botanical Garden is open 7 days a week and admission is free.

Minor News Flash:

On the right side of my blog page, you’ll see a new addition — an image that links to the Nature Blog Network. I’m proud to say my blog is now a member of this group, where you will find fascinating nature-related blogs from writers all over the world. Click on the link and check out this site; I think you’ll like what you find.

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  1. No Foolin’: Purple Plague Ushers in NC Invasive Species Awareness Week « Piedmont Gardener

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