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Restrictions on importation of Phytophthora ramorum (P. ramorum) host plants for planting into the United States

APHIS is issuing a Federal Order to restrict importation of plants for planting known to be hosts of P. ramorum. Since 2003, APHIS has been working toward limiting the spread of P. ramorum within the United States. APHIS has also been requiring that plants from several European countries and the United Kingdom be accompanied by certification of inspection and testing to be free of P. ramorum; however, the certification does not provide details about the country’s pest exclusion plan. Also, APHIS has not been requiring certification from other countries about testing or their disease-free status. The genotypic diversity and expanding host range of P. ramorum is of increasing concern.
Therefore, APHIS is requiring specific countries to have in place an annual pest exclusion program that incorporates monitoring, sampling, testing and a validation process to verify the absence of P. ramorum in a place of production. APHIS will approve the country to export host material to the United States if the program is comparable to APHIS’ restrictions for interstate movement of P. ramorum hosts. The shipments must also be accompanied by a phytosanitary certificate with an additional declaration about the place of production. Plants for planting of P. ramorum host commodities from other countries will be allowed into the United States if accompanied by a phytosanitary certificate with an additional declaration stating that P. ramorum is not known to exist within the country.
The restrictions apply to host plants for planting and all plant parts intended for propagation except seed of the plant taxa. The current APHIS-regulated P. ramorum host plant list is available at:
For questions on this Federal Oder, contact:

William Aley, Sr. Import Specialist, APHIS Plant Protection and Quarantine, Riverdale, MD at (301) 851-2130 or

See the entire document here:

NOTE: This amends a previous federal order and its largest change is “APHIS is requiring specific countries to have in place an annual pest exclusion program that incorporates monitoring, sampling, testing and a validation process to verify the absence of P. ramorum in a place of production.” Previously, no such testing was required.

Bugwood Apps. – Lots of Information in Your Hand

Six free apps including:


IveGot1 – Identify and Report Invasive Animals and Plants in Florida

Invasive Plants in Southern Forests

Invasive Plants in Southern Forests: Identification and Management

Missouri River Watershed Coalition

Missouri River Watershed Coalition – Early Detection and Distribution Mapping System

Outsmart Invasive Species

Outsmart Invasive Species

Mid-Atlantic Early Detection Network

Mid-Atlantic Early Detection Network

Invasive Plant Control, Inc.




Webinar on controlling Japanese maple scale, presented by Dr. Paula Shrewsbury.

May 3, 2012 at 10 am CST!!!!!
Here’s how to participate in the webinar:
Before the webinar, click on the link below.
You will be able to enter the session starting at 9 am CST on the day it occurs (for trouble shooting if necessary), but the actual webinar will not start until 10 am cst.
All that you need is an up-to-date browser and internet connection (and no firewalls!). We will run the webinar off of NC State’s ELLUMINATE site license, so you don’t need a copy of the program yourself. In order to make test that your system requirements are acceptable, visit the Configuration Room linked on
In addition, Elluminate tips can be found at the link below.

IPM Pro App. Developed for Green Industry Professionals

A tour de force of nursery and landscape pest management, IPMPro mobile device app. will streamline your pest management decision-making, employee training, and make complying with state pesticide recordkeeping regulations easy!
Imagine having a leading expert send you a text to alert you about pests as they emerge and time-sensitive cultural tasks! Built by leading horticulture and pest management experts, IPMPro is like having an expert with you on the job every day!


IPM Pro can provide you with:

  • Major pest and cultural practices reference at your employees’ finger tips!
  • Automatic text-like alerts for time-sensitive pest issues and cultural practices -alert date adjusted specifically for your location!
  • Viewable as a calendar or chronological list of action items for easy reference!
  • Contains images, pest lifecycle, and management options for major pests of woody plants!
  • Provides pesticide recommendations for major diseases and insects!
  • Built-in pesticide recordkeeping to make outdoor, and on-the-go recordkeeping easy!
  • BONUS Weed content!

Check it out here:

UGA Center for Urban Agriculture – 2012 Free Webinar Series!!!

Todd Hurt, UGA Center for Urban Agriculture Training Coordinator

Bodie Pennisi, UGA Extension Horticulture/Landscape Specialist

To watch archived presentations – click on the title for the month. To view speaker details – click on the speaker’s name.

Visit for more details.

Jan. 10th Rejuvination Pruning, Making the Tough Cuts

Rick Smith, The Pruning Guru, LLC

Feb. 7th Pesticide Applicator Resources Every Landscaper Should Know

Willie Chance, Outreach Coordinator, UGA Center for Urban Ag

March 6th Bulletproof Annuals for Georgia

Jenny Hardgrave, Simply Flowers, Inc.

April 3rd Cultivating Success, How to get your Staff Motivated

Jeff McManus, Director of Landscape Services, Ole Miss University

Aug. 7th Landscape Irrigation, Every Drop Counts.
Sept. 4th Sustainable Turfgrass Practices for the Educated Consumer

Becky Griffin, UGA Turfgrass Extension Associate

Oct. 2nd Ornamental Plant Disease Topic TBA
Nov. 20th Under the Scope with Dr. Braman; Advanced Ornamental Insect Id and Control, Dr. Kris Braman, UGA Entomologist
Dec. 4th New Woodie Ornamentals TBA

Prevention, Early Detection, and Eradication of Benghal Dayflower in Field Nurseries

Robert H. Stamps, professor of environmental horticulture and Extension cut foliage specialist, Mid-Florida Research and Education Center

Benghal dayflower (Commelina benghalensis L.), an increasingly problematic weed, is also known as jio, tropical spiderwort, hairy wandering jew, and Indian dayflower, among other names. It is an herbaceous monocot (flowering plant that produces one seed leaf and has fibrous roots, leaves with parallel veins, and flower parts occurring in multiples of three) that is native to Asia and tropical Africa. It was first collected in the continental United States in 1928, and in 1983, it was designated a “noxious weed” by the U.S. Department of Agriculture (Faden 1993). Benghal dayflower is also listed as a noxious weed by at least nine states, including Florida. This listing means that “it is unlawful to introduce, multiply, possess, move, or release any… noxious weed, or invasive plant regulated by the department [in Florida, the Department of Agriculture and Consumer Services] or the USDA …” (Florida Administrative Code Rule 5B-57.004).

For the rest of the article – visit:

National IPM Webinar finds a home at North Carolina State University

By: Steve Frank – Assistant Professor and Extension Specialist, Department of Entomology, North Carolina State University; and

Kelly Ivors – Associate Professor and Extension Specialist, Department of Plant Pathology, North Carolina State University


The National IPM Webinar series was started in 2011 by Dr. Scott Ludwig at Texas A&M but is now run by Drs. Kelly Ivors and Steve Frank at NC State.  The webinar series is designed to provide timely information to the green industry through monthly seminars on the production and maintenance of ornamental plants.  The webinar series invites extension specialists from around the county to speak on topics important to the nursery greenhouse, and landscape industry with particular emphasis on issues relevant to the Southeast.  This provides an opportunity for green industry professionals to learn in-depth information from the specialists conducting research on a particular pest or horticultural issue.

The webinars are live presentations in which the presenter speaks while showing power point slides on screen.  The webinars last about 40 minutes then audience members can ask questions through a microphone (if they have one) or by typing their question.  The webinars are presented on a level that is instructive to growers, extension agents, and even specialists that need to learn about a particular topic.  Since just one topic is covered, specialists have the time to cover topics more thoroughly than in other extension outlets.  In addition, since the presenters are active researchers, the audience may hear about efficacy data or other management information that is not published and thus would not be available to specialists who normally give presentations in their state.

In the inaugural webinar held January 5, 2012 Kelly Ivors discussed the new boxwood disease Box Blight on which she is the US expert (  Kelly had nearly 300 people participate in her seminar and 2400 more access the webinar since then.  The February webinar was about new research in the management of ambrosia beetles given by Steve Frank (  Both webinars were attended by growers, industry personnel, county extension agents, and extension specialists.  The March Webinar titled “‘Bark with a Bite’ Bark handling and what to watch out for”will be presented by Dr. Ted Bilderback March 8th at 11 am EST.

Webinars are typically scheduled for the first Thursday of each month starting at 11 am EST.  Announcements are sent out via a listserve.  This is not a discussion list. It is only used to send out information about  the webinar series.  You can sign up for the list serve by going to  Simply enter your email address in the field at the bottom of the screen and click subscribe. Past webinars are posted online with audio so you can watch them at your convenience.  Links will be sent out via the list serve prior to each session.

To participate in a webinar click on the link sent out via the list serve (e.g.  You will be able to enter the session starting at 10 am EST on the day it occurs.  This allows time for trouble shooting if necessary but the actual webinar will not start until 11 am EST.  You do not need any special software just an up-to-date browser and internet connection.  In order to test that your system requirements are acceptable, visit the Configuration Room linked on

This new series provides a great opportunity to get up-to-date and timely information relevant to improving IPM in your business.  I hope you will consider joining webinar sessions that are pertinent to your business or accessing online at your convenience.  These webinars could also make good tools for training employees.  Due to budget cuts and new technology the nature of extension is changing.  At North Carolina State University we are staying ahead of the curve so you can too.


The IPM Webinar Series received initial sponsorship from many state organizations including:

.           Alabama Nursery and Landscape Association

.           Louisiana Nursery and Landscape Association

.           North Carolina Nursery and Landscape Association

.           North Carolina Commercial Flower Growers Association

.           Northeast Texas Nursery Growers Association

.           South Carolina Greenhouse Growers Association

.           South Carolina Nursery & Landscape Association

.           Southeast Texas Nursery Growers Association

.           Texas Nursery and Landscape Association

.           The Tennessee Nursery and Landscape Association

.           Virginia Flower Growers Association


New Downy Mildew Affecting Impatiens!!!

Jean Williams-Woodward, UGA Extension Plant Pathologist
A relatively new downy mildew disease is infecting impatiens (Impatiens walleriana), a shade-tolerant, flowering annual plant that is a staple in landscapes. Downy mildew on impatiens caused by Plasmopara obducens was first seen in 2004 and it has shown up sporadically in the US since then, primarily in the northeastern US. However, this disease is currently devastating nursery crops and landscape plantings in central and southern Florida. Several factors may be the cause of the outbreak, including the movement of infected plants within the ornamental trade and the mild winter in Florida that has kept impatiens in the landscape longer than usual, which has provided an overwintering site for the pathogen. Infected plants often show downward curling leaves, small new growth, reduced flowering and a leaf stippling pattern that resembles spider mite feeding injury. This downy mildew is a prolific spore-producer. Sporangia can be seen on the leaf underside in cooler weather. Eventually, infected plants defoliate and may die. Oospores (survival spores) have been seen within the stems of infected plants in New England states that could allow the pathogen to survive within a landscape bed.


In response to this disease outbreak, it may be advisable for growers and landscapers to limit impatiens orders for spring sales and use begonias or New Guinea impatiens as replacement plants as these are not susceptible to infection. If plugs are coming from Florida growers, supplies of impatiens may be limited. We don’t know how the disease will progress during our hot, summer months; however, past experience with this disease in a few states suggests that the pathogen stops producing spores and infecting plants during hot weather. One of the main concerns for growers is that although they may be able to reduce infection and symptom development within their operation through preventive fungicide applications, once these plants go out into the landscape, the disease may cause severe losses for their customers in the spring and fall as fungicide use is often not continued in landscapes. Impatiens downy mildew infection can be reduced through fungicide drenches (28-day interval) or sprays (7-day interval) of Subdue MAXX (mefenoxam), Adorn (fluopicolide), Vital (potassium phosphite), Protect T/O (mancozeb), Pageant (pyraclostrobin + boscalid), Disarm (fluoxastrobin), Segway (cyazofamid), Stature SC (dimethomorph), FenStop (fenamidone) and Heritage (azoxystrobin) plus Capsil as a surfactant. Aliette (fosetyl-Al) has not provided control of this disease in several trials. Fungicide resistance development is a real concern for downy mildew diseases, so rotate fungicides making no more than two consecutive applications of the same fungicide or a fungicide with the same mode of action (with the same FRAC code).


Since most downy mildew diseases are blown northward from southern regions during storms, it may be only a matter of time before this disease shows up in Georgia and other southeastern states. If you have questions, please contact me at