TPMPM W eely R epo rt - University Of Maryland · 2015-07-10 · TPMPM W eely R epo rt - Japanese beetles - Boxwood blight - Dutch elm disease - Euonymus scale - White prunicola scale

for Arborists, Landscape Managers & Nursery Managers

Commercial Horticulture July 10, 2015Coordinator Weekly IPM Report: Stanton Gill, Extension Specialist, IPM for Nursery, Greenhouse and Managed Landscapes, [email protected]. 301-596-9413 (office) or 410-868-9400 (cell)

Regular Contributors: Pest and Beneficial Insect Information: Stanton Gill and Paula Shrewsbury (Extension Specialists) and Nancy Harding, Faculty Research AssistantDisease Information: Karen Rane (Plant Pathologist) and David Clement (Extension Specialist)Weed of the Week: Chuck Schuster (Extension Educator, Montgomery County)Cultural Information: Ginny Rosenkranz (Extension Educator, Wicomico/Worcester/Somerset Counties)Fertility Management: Andrew Ristvey (Extension Specialist, Wye Research & Education Center)Design, Layout and Editing: Suzanne Klick (Technician, CMREC)

In This Issue...

If you work for a commercial horticultural business in the area, you can report insect, disease, weed or cultural

plant problems found in the landscape or nursery to

[email protected]

TPM/IPM Weekly Report

- Japanese beetles- Boxwood blight- Dutch elm disease- Euonymus scale- White prunicola scale- Obscure scale- Bagworms- Slugs- Peach tree borer- Hickory leaf gall- Artillery fungus- Lace bugs- Dollar spot- Ambrosia beetles- Nutrient monitoring

Beneficial of the WeekWeed of the WeekPlant of the WeekPhenologyDegree DaysAnnouncements

IPMnetIntegrated Pest Management for

Commercial Horticulture

extension.umd.edu/ipm

Japanese Beetle Adult ActivityBy: Stanton Gill, UMEJapanese beetle adults are being reported feeding on crape myrtles this week and heavy populations are on roses. I am playing with growing hardy kiwi and Japanese heartnut plants at my orchard and am finding that Japanese beetle adults love the foliage of hardy kiwi and the Japanese heartnut. Hollyhocks are being planted in landscapes more and more and they are highly attractive to adult beetles. In our trials of new insecticides we are working with little leaf lindens, stewartia and birch. Each of these trees are like “candy” to adult Japanese beetles. Our control trees are getting hammered by adults this summer. Marie Rojas, IPM Scout, is finding them in high numbers on Tilia, Stewartia, Larix, Metasequoia, Prunus spp., Koelreuteria and Ulmus. Becky Yost is finding them on blueberries in Accident (Garrett County). If your customers are growing susceptible species of plants then it important to get your control program rolling this week.

This wheel bug nymph is making a a meal out of an adult Japanese beetle

POTTED GREEN ASH TREES NEEDED FOR RESEARCH!!! The Shrewsbury Lab (Dept. of Entomology, UMD) is doing research on biological control of emerald ash borer. Ironically, we are in need of approximately 20 potted

green ash trees (<2"dbh) for our research. Please email me if you have any or know of a potential source for these trees. Thanks. Paula’s email: [email protected]

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Dark leaf spots are one of the symptoms of box-wood blightPhoto: David Clement, UME-HGIC

Boxwood Blight UpdateBy: Karen Rane, UMDThis week we have received two boxwood samples in the UMD Plant Diagnostic Lab infected with Calonectria pseudonaviculata, the fungus that causes boxwood blight. Be on the lookout for symptoms of this devastating boxwood disease – dark leaf spots, dark brown elongate cankers on green stems, and leaf drop starting with the lower leaves and moving upward on the shrub. This disease can be confused with Volutella blight, which is a very common disease on boxwood in our area but is less severe than the new boxwood blight. The two samples we received in the lab were infected with both pathogens, and we needed to examine the samples under the microscope to make the diagnosis. If you suspect you are dealing with boxwood plants infected with boxwood blight, please send a sample to the UMD Plant Diagnostic Lab for confirmation. Information on sample submission and a submission form can be found on the lab website. Sanitation is the best way to manage boxwood blight – fungicide applications can help protect uninfected plants, but fungicides will not cure plants infected with the disease. An excellent source of information on this disease is the Virginia Boxwood Blight Task Force website which contains several publications on best management practices for various audiences (landscapers, nursery managers, home landscapes).

Dutch Elm DiseaseBy: David Clement, UME-HGIC, and Karen Rane, UMDThis week we visited an historic old European elm and collected samples to bring back to the lab for confirmation of Dutch elm disease. It’s important to collect recently wilted or dying twigs or branches from the tree. The pathogen will be located in discolored rings just below the bark in the xylem tissue. Completely dead or old wood will not allow isolation of the pathogen for diagnosis. The management of Dutch elm disease on newly infected trees can be accomplished by pruning out symptomatic branches quickly before the pathogen reaches the main trunk. Fungicide injections, a technique performed by certified arborists, can help protect uninfected trees, but the application must be repeated every 2 years, and fungicides will not cure plants that have infection that has reached the main trunk.

Dutch elm disease-resistant cultivars include: Accolade, Cathedral, Discovery, Dynasty, Frontier, Homestead, Independence, Jefferson, Morton Glossy, Morton Plainsman, Morton Stalwart, New Harmony, New Horizon, Ohio, Pathfinder, Patriot, Pioneer, Princeton, Prospector, Regal, Sapporo Autumn Gold, Urban, and Valley Forge.

If you suspect you have elms infected with Dutch elm disease, please send a sample of recently wilted branches at least ½ inch in diameter to the UMD Plant Diagnostic Lab for confirmation. Information on sample

When taking samples for Dutch elm disease testing, collect recently wilted or dying twigs or branchesPhoto: David Clement, UME-HGIC

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Euonymus ScaleBy: Stanton Gill, UMEI received a sample of euonymus scale this week. The females were gravid (pregnant), but I did not see crawlers quite yet. The sample came in from Chevy Chase. We should see the 2nd generation crawlers very soon. If you have euonymus infested with this scale, send it into to me, and I will examine it for crawler emergence.Control: A mixture of 1% horticultural oil and pyriproxyfen (Distance) or buprofezin (Talus) can be used to control crawlers.

White Prunicola Scale, Pseudaulacaspis prunicola (WPS - armored scale)By: Nancy Harding, UMDMonitoring white prunicola scale on Prunus subhirtella ‘Autumnalis’ in Laytonsville on July 7 found females with eggs indicating the second generation of crawlers will soon follow; we predict around a week. WPS has three generations a year. Degree Days in Laytonsville as of July 7 were 1671 DD. We will continue to monitor this scale and let you know when crawlers are active. Host plants: Preferred hosts include Prunus, especially Japanese flowering cherry, lilac, and privet.Control: When crawlers are out, pyriproxyfen (Distance) or buprofezin (Talus) mixed with 0.5 - 1% horticultural oil can be used.

If you are scouting sites with an infestation of white prunicola scale (WPS), now is the time to look for the next generation of crawlers.

Obscure ScaleMarie Rojas, IPM Scout, found obscure scale eggs swelling up when looking at this scale under a microscope. Crawler activity begins in July and continues through early September. There is only generation per year.Control: Use 0.5 – 1% horticultural oil or pyriproxyfen (Distance) or buprofezin (Talus) at crawler emergence. Marie notes that she is hearing from nurseries about how tough it has been to get controls down (such as IGRs for crawlers of this scale and others) in a timely manner due to all of the continuing rain showers.

submission and a submission form can be found on the plant diagnostic lab website.

The pathogen will be located in discolored rings just below the bark in the xylem tissuePhoto: David Clement, UME-HGIC

Yellowing of foliage is one of the symptoms of euonymus scale

Flipping the cover of a 3rd instar female white prunicola scale cover shows eggs underneathPhoto: Nancy Harding, UMD

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Good Use for Slugs and SnailsBy: Stanton Gill, UMEIn early June I wrote an article on the latest craze in Korea – using facial cream based on snail and slug mucous. Both men and women are snapping it up and using this product in Seoul. My brother-in- law is a colonel in the army stationed in Korea. He visited us last weekend and brought a container of this snail mucous cream fresh from Korea. He said he had to search for it since it so popular and relatively hard to obtain. It is a mixture of ginseng root and ginkgo extract combined with snail and slug mucous. The Koreans believe it helps keep their skin soft and youthful. Who would have thought someone could find a good use for snail and slug slime – but they did. Remember – you can create a market for just about anything.

Last summer seemed like a rainy season, but 2015 appears to be exceeding the rain frequency we experienced in 2014. This weather is perfect for slugs and snails. Start collecting them and start your Maryland-based cosmetic business.

SlugsBill Miller, The Azalea Works, found damage and slime trails most likely caused by slugs on Lobelia cardinalis. He noted that the plant is in the semi-shade of a large Acer palmatum and about ten feet from a large bed of many Lobelia in full sun that are unaffected. Slugs can create holes or scrape away sections of leaf tissue leaving white or tan streaks. They are active at night and hide in the mulch or leaf litter during the day. In early morning, you can sometimes see them on the undersides of damaged leaves.

BagwormsWe are getting reports of bagworms in various stages. Richard Chaffin, The Brickman Group, sent photos of late instar bagworms feeding on junipers in Baltimore County. Marie Rojas, IPM Scout, is reporting that they are still hatching out in Frederick and Montgomery Counties.Control options include: Conserve, Orthene, Acelpryn, and Astro.

Juniper is one of the common plant hosts of bagwormsPhoto: Richard Chaffin, The Brickman Group

The recent rainy weather has been good for slugsPhoto: Bill Miller, The Azalea Works

MDA Pesticide Container Recycling Program for 2015For more information:

http://mda.maryland.gov/plants-pests/Documents/Pesticide-Container-Recycling-2015.pdf

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Peach Tree BorerBy: Stanton Gill, UMEI picked up the first adult male peach tree borer, Synanthedon exitiosa, on June 28 in Westminster. I found more in my traps over the July 4th weekend. Adult male activity means females are also out and mating is occurring. It usually takes about two weeks before they start depositing eggs on susceptible trees. The larval stage bores into the crown and trunk of the tree and mines the cambial layer. Gum exuding from around the base of the trunk is evidence of peachtree borer. Larvae of the peachtree borer are white with brown heads. Adults are clear-winged moths with blue-black bodies having yellow or orange bands across the abdomen. They infest plums, peaches, and cherry laurel tree. Protectant spray of bifenthrin (Onyx) or permethrin can be use on ornamental trees. There are commercial brands of pesticides containing bifenthrin labeled for fruit tree applications.

Hickory leaf gall is one of the many galls found on woody plants that may be unsightly, but does not affect the overall health of the treePhoto: Jim Harris, Woodacres Tree Specialists

Artillery FungusBrian Scheck, Maxalea, Inc., sent in a photo of artillery fungus on siding on a house in Perry Hall. The artillery fungi grow on organic matter such as mulch. For more details on artillery fungi, go to http://plantclinic.cornell.edu/factsheets/artilleryfungus.pdf

Hickory Leaf GallJim Harris, Woodacres Tree Specialists, found hickory leaf gall this week. These galls are caused by tiny phylloxera insects which are small tan insects that are aphid-like. The insect overwinters in the egg stage. The overall health of the tree is usually not affected. There are not treatment recommendations for this insect.

Artillery fungi is extremely difficult to removePhoto: Brian Scheck, Maxalea, Inc.

Lace BugsMark Schlossberg, ProLawn Plus, Inc., found adults and nymphs of hawthorn lace bugs on cotoneaster in Pikesville this week. Hawthorn lace bug also feeds on Crataegus, Pyracantha, Sorbus, Pyrus, Cotoneaster, Cydonia, Cephalanthus, Malus and Chaenomeles. Control options include: acetamiprid (TriStar) and acephate (Orthene).

Look for all stages of hawthorn lace bug and fecal spots on the undersides of foliagePhoto: Mark Schlossberg, ProLawn Plus, Inc.

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Using resistant cultivars is a way to reduce the incidence of dollar spot disease in turfPhoto: Mark Schlossberg, ProLawn Plus, Inc.

Dollar Spot in TurfMark Schlossberg, ProLawn Plus, Inc., reports that dollar spot is active in turf in Owings Mills this week. Look for small spots in turf that are bleached or light tan in color. Leaves often have reddish margins. Dollar spot tends to be most damaging in poorly nourished turfs, particularly when soils are dry, when humidity is high or a heavy dew is present. Cultural approaches to minimize injury include avoiding drought stress, controlling thatch and soil compaction, maintaining adequate fertility, returning clippings to lawns, and over seeding with resistant cultivars. Fungicides can also be used to manage this disease. NC State has posted a list of fungicides at http://www.turffiles.ncsu.edu/diseases/Dollar_Spot

Monitoring Fertility in Your ContainersBy: Andrew Ristvey, UME The beginning of this summer was obviously quite wet for many of us. Temperatures being relatively warm with all the rain, and now with the heat coming on, I thought I would share some nutrient management thoughts. I have been to a few container operations in these past weeks and I have noticed plants looking a little chlorotic. After performing pour-throughs or saturated media extracts (SME) and finding low electrical conductivities (EC) and spent fertilizer prills, I have noted some potential nutrient deficits. I suspect that two problems had been occurring. First, with the warm temperatures this time of year, many slow release fertilizers are past peak in nutrient release. As we know, high temperatures can cut the effective release times of many fertilizers nearly in half. Next, the rains may have leached the nutrients out of the root zone. The combination of both warm temperatures and rains may have left plants without an adequate supply of nutrients. If your plants are looking good, temperatures will continue to remain high and this will hasten the release of nutrients from your slow release fertilizer. I want to remind you that monitoring the nutrient content in your containers would be proactive way to stave off any nutrient related problems which could negatively impact your plants. Either a pour-through or a SME will do. If you do not have time for these, another method is to gather a sample of water from some of your containers at least a half hour after an irrigation event. You can remove a small portion of water from you container by picking it up and tipping it. Water that flows out of the drain holes can be collected. An ounce or less is adequate.

Ambrosia BeetlesJessica Frackes, Thrive, Inc., is finding frass tubes caused by ambrosia beetles on beech trees in Washington D.C. this week. This activity is likely from the second generation.

Tip the pot after an irrigation event to gather a water samplePhoto: Andrew Ristvey, UME

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Adult robber fly with a thrips in its mouth… Mmmm… and good biological control too!

Beneficial of the WeekBy: Paula Shrewsbury, UMD

Robber flies catch prey “on the wing”

Robber flies are true flies (Diptera) in the family Asilidae. There are many species of these predatory flies and they are found in diverse types of habitats. Robber flies occur world-wide in their distribution and there are about 7,000 species. The greatest diversity in robber fly species have been found in arid, sunny habitats. I commonly see them at wood edges and in landscapes and nurseries. Like all true flies, robber flies have one pair of wings as adults. Adults have large eyes, an elongate body with a tapered abdomen, and are relatively hairy. Robber flies range in size from about 1/8” to almost 2”. Most characteristic are their long legs which have strong bristles of hair which help them in capturing and holding their prey. Some robber flies are stout and hairy mimicking bees while others are slender and less hairy. Most robber flies are yellow/brown, gray, and black in coloration. Adult females lay whitish colored eggs on foliage or in the crevices of soil or bark. Larvae of robber flies live in the soil and are seldom

Performing these tests earlier in the day is best to solve potential problems before the afternoon heat. Remember that you are looking for EC levels between 0.5 dS/m and 2.0 dS/m. Anything below 0.5 dS/m (after subtracting your well-water EC value) and you may want to consider either less irrigation or supplemental fertilizer. Anything between 2.5 and 3 dS/m (or above) would indicate that leaching may be needed, especially if a hot day is expected. Electrical conductivity of 4 dS/m will kill roots. Electrical conductivity levels could be lower in SME’s since you are diluting the sample. As a reminder, the following EC units all mean the same thing: mmhos/cm (milli-mhos per centimeter) = mS/cm (milli-siemens per centimeter) = dS/m (deci-siemens per meter) = 1000 μS/cm (micro-siemens per centimeter). Most important is irrigation management. Monitor container moisture and try not to over irrigate, as to not exacerbate a nutrient leaching problem. Ideally, avoiding the application of more nutrients by keeping what you have in the container is most important. Don’t forget to keep an eye on your pH. The pH range for soilless potting media is between 5.8 and 6.3 for optimum nutrient availability. Monitoring your container root zone EC and pH goes a long way for preventing nutrient related problems including deficiencies and toxicities. Certainly, pathogen infections may be kept in check simply by keeping your roots healthy. If time is a premium, know where your trouble spots are and focus your efforts. You can call me for additional information or with any questions you have at 410-827-8056 x113. Good luck with the rest of this growing season!

This spent sprill expresses ylast bit of nutrient saltsPhoto: Andrew Ristvey, UME

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A larger species of robber fly that captured and is consuming a brown marmorated stink bug adult – yeah! Photo: M. Raupp, UMD

Weed of the WeekBy: Chuck Schuster During a normal year… A comment many of us have made, but what is a normal year? Is this year a normal year? The rainfall has continued to challenge many of the norms, the early heat and now cooler than normal temperatures overall are confusing plants, especially weeds as to what to do. One recent comment came in that found hairy bittercress and chickweed germinating, dandelions blooming and crabgrass going crazy. Didn’t the weed control work? I will discuss more on crabgrass weed control in the weeks to come. Our summer has been different for sure. We are currently 16 Growing Degree Days behind using 50 °F as the baseline (1525 as of today, and 1541 the average for this date). In 2012 we had 1731 Growing Degree Days on this date, but since then we have seen cooler springs to date according to our website. Watch this as it does play a role in what is growing and what is in bloom.

One weed that seems to be thriving with the different weather we are having is Oriental bittersweet. Oriental bittersweet, Celastrus orbiculatus, often called Asiatic bittersweet, is a deciduous woody perennial plant that grows very prolifically in this area. It is being noticed in many landscapes and nurseries this year, and does require attention. A problem of nursery and landscape settings, this fast growing vine can grow as tall as fifty feet or

Twining is a characteristic trait of Oriental bittersweetPhoto: Chuck Schuster, UME

seen. They are legless and have long worm-like soft bodies, and their size varies with species. Robber flies overwinter as larvae and pupation occurs in the soil.

Robber fly hunting behavior is quite interesting and given the opportunity you should definitely watch these skilled hunters. Adult robber flies are very talented and can capture their prey in the air! Robber flies establish a “perching” location in open sunny areas (much like a hawk). They will sit on the tip of a piece of vegetation and watch for potential prey to fly by. Once prey is spotted, robber flies will take flight and capture the prey item in its long legs. At that point there is no hope for the prey. The robber fly immediately injects its prey with saliva that contains enzymes that are neurotoxic (immobilizing the prey) and proteolytic (liquefying the prey). The robber fly returns to its perch where it feasts on its liquefied meal. Yum! Robber flies are generalist predators feeding on wide diversity of arthropods including those that are pests and others that may be beneficial. Robber fly adults are quite voracious and are known to attack beetles, bugs (including stink bugs), wasps, bees, moths, dragonflies, grasshoppers, flies, and other arthropods. Robber fly larvae live in soil and decaying wood where they feed on white grubs, worms, grasshopper eggs, and other soil insects.

Because robber flies are abundant and voraciously feed on many arthropods, they contribute to biological control of many plant feeding insects. Robber flies make up part of the diverse complex of natural enemies that all work together towards preventing herbivores from becoming pests.

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Chamaecyparis obtusa ‘Crippsii’ or ‘Cripps Golden’ Hinoki false cypres brightens up the landscapePhoto: Ginny Rosenkranz, UME

The leaves of Oriental bittersweet are alternate and it has a fast growing upright habitPhotos: Chuck Schuster, UME

Plant of the WeekBy: Ginny Rosenkranz

Chamaecyparis obtusa ‘Crippsii’ or ‘Cripps Golden’ Hinoki false cypress makes a sunny statement that brightens up landscapes in all four seasons. The golden yellow feathery fern-like foliage is supported on softly arching branches on a fairly fast growing tree that tops its height at 8-10 feet tall, taller in the southern states. The silhouette is a broad upright pyramid that spreads 3-4 feet wide. It best planted in a full sun location for the brightest golden color for both summer and winter interest. The foliage matures to green in the interior of the tree although some golden highlights are displayed giving the plant a 2-toned

more in one year, with a stem diameter of up to four inches. The leaves will be alternate, round in shape with a finely toothed margin. Damage from this weed can be from breakage of the desired plant as it will grow into the canopy and create either weight or potential storm damage. Its spiral habit can also choke other desired plants. Oriental bittersweet is very similar to American bittersweet, and can be distinguished by the location of the flowers and fruit. Berry location on the American bittersweet is only at the tips of the vines where with the Oriental bittersweet, the berries occur all along the vines.

Oriental bittersweet is an invasive plant. One reason for concern is the color and great numbers of berries produced. As birds are one of the prime methods of dissemination, a brighter red color is very attractive to the birds and with greater numbers of berries to be found, the potential of spread is much higher. To add insult to this problem, the seeds also seem to have a higher germination percentage than that of American bittersweet.

Control of Oriental bittersweet can be accomplished through either mechanical or chemical means. Cutting near the base can be effective with small plants. As plants mature, the use of a stem application after cutting with the immediate use of triclopyr (Garlon 4) or glyphosate (Roundup and others) at a 25% solution. Use caution not to apply the herbicide to the desired plant material, as thin barked species can be damaged or killed. In open settings, where possible apply triclopyr and glyphosate. If possible mow the site first to create the cut stem. Repeated applications may be necessary. The use of a basal oil and a penetrant may be beneficial. This will increase the effective. Use eye protection when doing stem applications, as some products are salt based and may cause eye damage.

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Degree Days (As of July 9) 2015 2014 2013 2015 2014 2013Baltimore, MD (BWI) 1748 1580 1626 Dulles Airport 1738 1506 1358Frostburg, MD 1142 976 1033 Martinsburg, WV 1659 1550 1543 National Arboretum 2193 1983 1909 Reagan National 2193 1983 1909Salisbury 1728 1796 1849 St. Mary’s City 1807 1670 1769

To check degree day (DD) accumulations in your local area go to: http://www.yourweekendview.com/outlook/agriculture/growing-degree-days/. Note: degree days reported in this newsletter use a base

temperature of 50 °F, a start date of January 1st, and the date of monitoring as the end date.

New and Alternative Crops for Greenhouse and Nursery GrowersAugust 5 2015 (8:00 a.m. - 3:15 p.m.)

Location: Brookside Gardens, Wheaton, MD

Native plants: How to grow in the greenhouse from seed and cuttings. Dr. Sara Tangren, University of Maryland Extension, HGICProducing cut flowers and vegetables using hydroponics from a working greenhouse operation. Matthew Bauer, Flowers by Bauer, Harford County, MDNew tissue culture plants for greenhouse production. Heather McDermott, AgriStarts – Tropicals, Natives,Edibles, and More, Apopka, FL Hops as an alternative crops. Tom Barse, Stillpoint FarmGinseng: Is it green gold? Dr. Marla McIntosh, University of MarylandHydroponic fertility. Cari Peters, Peters Lab, PAGrowing native annuals and perennials for marketing as pollinator plants and to benefit beneficial insects and mites. Dr. Sara Tangren, and Stanton Gill, University of Maryland ExtensionTour of Brookside Production Facility. Joe Kraut, Head Grower, Brookside Gardens

To register: https://marylandarborist.wufoo.com/forms/mnlga-umd-ext-2015-alternative-crops-conference/

PLANT PLANT STAGE (Bud with color, First bloom, Full bloom, First leaf)

LOCATION

Monarda fistulosa Full bloom July 6 (Ellicott CitySedum ‘Autumn Joy’ First bloom July 10 (Ellicott City)

Phenology

effect. ‘Crippsii Golden’ Hinoki false cypress grows well in moist, slightly acidic, well drained soils in USDA zones 4-8. It is very tolerant of high humidity but not tolerant of drought soils and may need weekly watering to maintain plant health. In the landscape ‘Crippsii Golden’ Hinoki false cypress makes a bright specimen plant, a soft backdrop for shrubs and colorful perennials and in protected areas, a privacy hedge. No insect pests or diseases are a major concern.

The information given herein is supplied with the understanding that no discrimination is intended and no endorsement by University of Maryland Extension is implied.

CONTRIBUTORS:

University of Maryland Extension programs are open to all citizens without regard to race, color, gender, disability, religion, age, sexual orientation, marital or parental status, or national origin.

Thank you to the Maryland Arborist Association, the Landscape Contractors Association of MD, D.C. and VA, the Maryland Nursery and Landscape Association, Professional Grounds Management Society, and FALCAN for your

financial support in making these weekly reports possible.

Photos are by Suzanne Klick or Stanton Gill unless stated otherwise.

Stanton GillExtension Specialist

[email protected] (cell)

Paula Shrewsbury Extension [email protected]

Ginny RosenkranzExtension [email protected]

Chuck SchusterExtension Educator

[email protected]

Karen Rane Plant [email protected]

Andrew RistveyExtension [email protected]

David ClementPlant Pathologist

[email protected]

Nancy HardingFaculty Research

Assistant

Upcoming Conferences:Alternative Greenhouse Crops Conference August 5, 2015Location: Brookside Gardens, Wheaton, MD

PGMS Green Industry Field Day and Trade ShowJuly 16, 2015Location: American University, Washington D.C.http://pgms.org/wp-content/uploads/2012/10/2015GreenIn-dustryFieldDay.pdf

MAC-ISA Arborist Certification CourseAugust 17-19, 2015Location: NVCC Loudoun Campus, Sterling, VAwww.mac-isa.org

FALCAN Truck and Safety SeminarAugust 19, 2015Location: Urban Fire Hall, Urbana, MDhttp://falcanmd.com

LCA Hands-on Training SeminarSeptember 16, 2015 Location: Johns Hopkins Univesity, Mongomery County Campus

Interiorscape ConferenceOctober 1, 2015 Location: Rawlings Conservatory, Baltimore, MD

Community Forestry WorkshopOctober 2, 2015Location: Carroll Community College, Westminster, MDhttp://www.westgov.com/182/ForestryWorkshop

4th Annual TreesMatter SymposiumNovember 4, 2015Location: Silver Spring Civic Center, Silver Spring, MD