Pam Bennett, Barb Bloetscher, Joe Boggs, Jim Chatfield, Erik Draper, Dave Dyke, Gary Gao, Dave Goerig, Dan Herms, Tim Malinich, Jane Martin, Pam Sherratt, Amy Stone, and Curtis Young.
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May 20, 2004
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This is the Seventh 2004 edition of the Buckeye Yard and Garden Line (BYGL).
BYGL is developed from a Tuesday morning conference call of Extension
agents, specialists and other contributors in Ohio.
BYGL is also made available on the Internet from the Ohio State University
Horticulture and Crop Science (HCS) in Virtual Perspective website
(http://bygl.osu.edu). Additional fact sheet information on any of
these articles may be found through the OSU fact sheet database (http://plantfacts.osu.edu).
BYGL is a service of OSU Extension and is aided by major support
from the Ohio Nursery and Landscape Association (ONLA), with additional
funding from the Ohio Chapter of the International Society of Arboriculture
(ISA) to the OSU Extension Nursery Landscape, and Turf Team (ENLTT).
Participants in the May 18, 2004 conference included: Pam Bennett (Clark); Barb Bloetscher (Entomology and C. Wayne Ellett Plant & Pest Diagnostic Clinic); Joe Boggs (Hamilton/South District); Jim Chatfield (North District/ Horticulture and Crop Science Department-HCS); Dave Dyke (Hamilton); Gary Gao (Clermont); Dave Goerig (Mahoning); Dan Herms (Entomology); Tim Malinich (Cuyahoga); Joe Rimelspach (HCS); Pam Sherratt (Agronomy); Dave Shetlar (Entomology); Amy Stone (Lucas); Nancy Taylor (Plant Pathology and C. Wayne Ellett Plant & Pest Diagnostic Clinic); Curtis Young (Allen County); and Randy Zondag (Lake)..
Additional factsheet information on any of these articles may be found
through the OSU Factsheet Database (http://plantfacts.ohio-state.edu/)
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WEATHER WATCH
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Most of Ohio has been experiencing conditions conducive to afternoon thunderstorms, with some storms producing heavy rainfall. It has been very hit and miss. Areas within a county may receive inches, while neighboring areas not a drop.
Erik Draper reported that May's precipitation total for Geauga County has been 3.00", thus far. Their year-to-date total is 15.01", which is 105% of the average. Amy Stone reported that Toledo has been receiving some rain and that the official deficit amount recorded at the Toledo Express Airport is just over 3.00" for the year.
Jane Martin in Central Ohio reported that official total in Columbus for the month has been 2.25", up 0.32" from the average. The year-to-date amount pours in at 16.58", +3.70" when compared to the average.
And finally, from the south, Joe Boggs reported May totals for the Cincinnati area at 2.15". That is 0.34" below average. The year-to-date total is 15.02", just 0.60" below average.
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HORT SHORTS
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PLANT PHENOLOGY
In southern Ohio Weigela (Weigela florida) is in full bloom and black locust (Robinia pseudoacacia) has just finished blooming. Plants observed to be in full bloom in the central Ohio area include: black cherry (Prunus serotina), Vanhoutte and bridalwreath spiraea (Spiraea x vanhouttei and S. prunifolia), white fringetree (Chionanthus virginicus), European mountainash (Sorbus aucuparia), doublefile viburnum (V. plicatum var. tomentosum), wisteria (Wisteria chinensis), blue holly (Ilex x meserveae 'Blue Boy', 'Blue Girl'), red buckeye (Aesculus pavia), Washington hawthorn (Crataegus phaenopyrum), Miss Kim lilacs (S. patula 'Miss Kim'), and weigela (Weigela florida).
At Secrest Arboretum, OARDC, in Wooster, the following are in full bloom: doublefile viburnum, Vanhoutte spirea, redosier dogwood (Cornus sericea), Pink Princess weigela, red horsechestnut (Aesculus x carnea), and red buckeye. Just beginning to show color are: black locust (Robinia pseudoacacia), catawba rhododendron (Rhododendron catawbiense), white fringetree, slender deutzia (Deutzia gracilis), umbrella magnolia (Magnolia tripetela), drooping leucothoe (Leucothoe fontanesiana), and Miss Kim lilac.
Just starting to bloom up in the northwest area of the state is black locust. The following plants are in full bloom: Miss Kim lilac, Washington hawthorn, and snowball viburnum (Viburnum macrocephalum).
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GROWING DEGREE DAYS
The range of Growing Degree Day (GDD) accumulations in Ohio from north to south is 385 to 643. The following is the report of GDD for several locations around Ohio as of May 19, 2004.
As of Wednesday afternoon, GDD accumulations were: Painesville, 385; Cleveland, 406; Toledo, 472; Youngstown, 452; Lima, 488; Wooster, 474; Coshocton, 494; Columbus, 524; Springfield, 545; Dayton, 571; Cincinnati, 623; Ironton, 643; and Portsmouth, 643.
GDD is a measure of the daily maximum and minimum temperature and directly relates to growth and development of plants and insects. The GDD of any zip code location in Ohio is estimated using the GDD of ten OARDC weather stations and available on the web at: http://www.oardc.ohio-state.edu/gdd/
To put these GDD accumulations into perspective, the following is an abbreviated listing of plant and insect species with their respective phenological event and average GDD accumulations at which these events occur. Due to variations in weather, temperature, humidity, etc., these events may occur a few days earlier or later than predicted by the average GDD. By looking at a city, town, or village near you from the above list, or visiting the above web site, you can see what could be taking place in the landscape around you.
The following is a list of plants and their phenological events that occur at or around the following average GDD's, and insects and their phenological activities that have average GDD's close to the listed plants: Ohio buckeye, full bloom, 374; holly leafminer, adult emergence, 375; Vanhoutte spirea, full bloom, 406; euonymus scale (first generation), egg hatch, 406; black cherry, full bloom, 419; Miss Kim Manchurian lilac, first bloom, 422; locust leafminer, adult emergence, 437; doublefile viburnum, full bloom, 444; black locust, first bloom, 467; common ninebark, first bloom, 478; oystershell scale, egg hatch, 497; smokebush, first bloom, 501; arrowwood viburnum, first bloom, 534; American yellowwood, first bloom, 546; bronze birch borer, adult emergence, 547; black locust, full bloom, 548; American holly, first bloom, 556; mountain laurel, first bloom, 565; potato leafhopper, adult arrival, 568; juniper scale, egg hatch, 571; common ninebark, full bloom, 596; American yellowwood, full bloom, 599; arrowwood viburnum, full bloom, 621; multiflora rose, full bloom, 643; northern catalpa, first bloom, 675; and black vine weevil, first leaf notching due to adult feeding, 677.
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BUG BYTES
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PERIODICAL CICADAS PUT TREES UNDER WRAPS
BYGLers located in the southern portion of Ohio's Brood X "Cicada-land" reported that cicada activity is on the rise. In a post-BYGL conference call report, cicadas were observed emerging in the Dayton area on May 19. Joe Boggs noted the red-eye express is accelerating in Greater Cincinnati, with conspicuous masses of cicadas creeping up trees and adults flying about. Amorous male cicadas are now singing their love songs, in the form of a loud, droning buzz. While the impassioned songs may sound like cacophonous noise to us, it's music to the "ears" of female cicadas! Despite high numbers of cicadas, the emergence has yet to reach awe-inspiring dimensions in southwest Ohio. Of course, this can literally change overnight.
Increased public awareness of the Brood X emergence has escalated phone calls to Extension offices regarding management strategies. Several BYGLers reported observing interesting uses and misuses of tree canopy coverings to prevent oviposition damage. Pam Bennett indicated that she has observed wrapped trees making various fashion statements for 2 to 3 weeks in the Springfield area ... her part of the state is just now experiencing the emergence. Joe noted that he has observed trees wrapped tightly with cloth spiraling around compressed branches and held firm from top to bottom by rope bindings. These "tree-mummies" are startling to behold, particularly at night. Another misuse of tree canopy coverings involves securing cloth to the trunk of the tree, and only pulling protective material over basal branches. The upper canopy is left uncovered. These "tree-bouquets" should be appreciated by flying female cicadas.
Covering small, newly planted trees with light-weight cloth (e.g. cheese-cloth), netting (openings 1/4", or less in size), or other appropriate material will prevent cicada oviposition injury. This is a recommended practice in areas where high cicada populations portend significant damage to small trees. However, this method of reducing cicada damage is not without risk to the "protected" trees.
Here are some common-sense points to consider:
* Trees should not be covered until the cicada emergence is truly looming on the horizon. Indeed, one recommendation is to delay covering trees until you see the reds of their eyes since male cicadas emerge first, and oviposition does not immediately occur.
* Tree covering material should not significantly interfere with the passage of light to the canopy. This is particularly important for trees that require full sun to thrive.
* The material should allow for good airflow, keeping foliage dry and less susceptible to fungal infections. Good airflow across leaf surfaces also cools the foliage, and supports evapotranspiration, a process that is important to water and nutrient uptake by the tree.
* The covering material should be kept loose over the canopy. Limbs and foliage should not be compressed.
* Covering material should be removed periodically, and reapplied as needed. This will keep new growth from becoming deformed by the cover. Cloth material should also be removed when weather reports predict strong storms that include high winds. The material may act as a wind-sail causing damage to branches and main stems.
* Using tree canopy covers to protect against oviposition damage should be treated as a short-term endeavor. Long-term use of some materials for covering trees may produce noticeable damage to the tree. Cicada activity should be closely monitored, and the tree covers removed as soon as oviposition activity has abated.
 
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CANKERWORM CALAMITY
Joe Boggs reported observing a relatively widespread outbreak of FALL CANKERWORM (Alsophilia pometeria), and to a lesser degree SPRING CANKERWORM (Paleacrita vernata), in a neighborhood in Butler County. Interestingly, this was the same neighborhood where Joe reported observing a highly localized outbreak, involving just three homes, in 2001 (BYGL 2001-06, 5/10/2001). The current infestation is spread over a much wider area, with damage being found on trees several miles apart. Tree species most commonly infested included maples, honeylocusts, and crabapples; although a number of other deciduous trees were also affected including elm, beech, and oak. Complete defoliation of infested trees was common.
Cankerworm caterpillars are also referred to as "inchworms," or "loopers". Fall and spring cankerworms are general defoliators and they may consume entire leaves, leaving behind only the midvein, or just the leaf petiole. Indeed, Joe indicated that clusters of green, finger-like petioles "sprouting" from the twigs made defoliated trees look particularly odd. When these cankerworms near pupation, they spin down from tree canopies on silken threads and pupate in the soil. However, these cankerworms may also rappel from their hosts in search of food if trees are defoliated prior to the caterpillars completing their development. Large numbers of dangling cankerworms beneath infested trees make these caterpillars a serious nuisance pest, as they entangle unsuspecting home gardeners.
The common names of the spring and fall cankerworms indicate the season when the flightless female moths usually lay their eggs. However, larvae of both species appear in the spring, and it is not uncommon for both species to be found together. Since both have green and brown color forms, identification of the cankerworms can be challenging. The bestS way to tell them apart is to count the prolegs: fall cankerworms have three pairs; spring cankerworms have two pairs.
Both species have a single generation per year. Joe noted that the dangling hordes were in the process of bailing out of their host trees, and dropping to the ground to pupate. This means it is too late for applying control measures since the onslaught is over for the season. The good news is that there is plenty of time for affected trees to re-foliate. Spring and fall cankerworms are commonly found in low numbers on Ohio landscape and forest trees, and they seldom produce significant damage. However, outbreaks do occasionally occur. Such outbreaks should be closely monitored from year-to-year since they may require 2-3 year to subside.
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EUROPEAN PAPER WASPS GEARING UP RAPIDLY
Curtis Young reported that the EUROPEAN PAPER WASP (Polistes dominulus) has already constructed numerous nests in NW Ohio, and probably has started rearing young in southern parts of the state. First recorded in the U.S. along the east coast in 1981, this wasp has spread rapidly across most of the eastern seaboard and into the mid-west. It was reported in California and Washington in 2001, or 2002, and in Colorado in 2003. This exotic wasp is apparently displacing native species of paper wasps such as Polistes fuscatus pallipes in Ohio.
The European paper wasp is very similar in appearance to a yellow jacket with black and yellow markings, however it has a more elongate abdomen. It builds a typical upside-down umbrella paper wasp nest in a multitude of locations. Our native species of paper wasps typically builds their nests along roof eaves. The European paper wasp will utilize roof eaves as well, but it also uses hollow voids such as exterior lighting fixtures, mail boxes, bird boxes, open-ended pipes, and automobiles. Curtis has two nests on the driver's door of an old car he keeps at the county office for field work. It makes for a real thrill getting in and out of the car. BYGLers have also observed this wasp building nests in shrubs and along hand rails of wooden decks. Because of its nesting habits, it can be a real threat to multiple types of outdoor activities.
This introduced non-native wasp has several other characteristics that give it a competitive advantage over native wasps:
* It establishes its nest earlier in the spring and it will re-use old abandoned nests of its own or other species.
* It will utilize prey from several insect orders while our native species typically specialize on caterpillars.
* The protective sites it uses for nesting protects the wasp from predation and discovery while the native species are out in the open.
Although their predatory activities are beneficial, their choice of nesting sites will cause an increase in close encounters of the kind we would prefer not to have. Thus, it may be in our best interests, as well as in the interests of our native species, to take action against the European paper wasp early in the growing season. Eliminating nests and reproductives now will decrease the number we will encounter later in the summer.
Wasp and hornet sprays in aerosol cans are quite effective when one can locate the nests and wasps. As always, use pesticides according to their labels and don't take unnecessary risks getting at the wasps to treat them.
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BRONZE BIRCH BORERS EMERGE
Dan Herms reported that the bloom of the black locusts indicates it is time to expect the bronze birch borers (Agrilus anxius Gory) to emerge and begin looking for weakened birch trees for oviposition. These slender, 1 /2" olive-bronze beetles can lay eggs in any birch tree; however, they seem to prefer European white birch (Betula pendula), water birch (B. occidentalis), paper or canoe birch (B. papyrifera), and yellow birch (B. alleghaniensis).
After the females lay eggs in bark crevices, the strongly segmented larvae tunnel under the bark and slowly girdle the circumference of the branches or stems. Upon close inspection, winding, gouty trails can be seen under the smooth white bark where the larvae are active. Main branches and trunks of stressed trees, which cannot produce enough sap to "gum the larvae out", will wilt, turn brown, and then die.
Commercial applicators can apply Astro (permethrin), or Onyx, to the main trunks and branches to control this borer. Homeowners can still drench the base of the trees with imidacloprid (Bayer- Tree and Shrub Insect Control Concentrate). Because it takes two weeks after the adults have emerged until the larvae hatch and begin burrowing, drench applications of imidacloprid can be made up to early June and still allow the trees enough time to absorb and translocate the insecticide.
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OYSTERSHELL AND EUONYMOUS SCALES HATCH
Crawlers of the oystershell and euonymous scales will be hatching soon. Although oystershell scales may be found on 128 different plants, euonymous scale is mostly restricted to euonymous species, such as wintercreeper (Euonymus fortunei), spreading euonymus (E. kiautchovica), Eastern wahoo (E. atropurpureus), and European euonymus (E. europaeus). Winged euonymus is resistant to this scale; however, it may be attacked by the winged euonymus scale.
Examine weak, chlorotic-looking plants for small oyster-shaped scales packed onto main branches. Females are mottled brown, and found on main stems and petioles. Male scales are narrow and whitish in color, and found on the undersides of leaves.
Since armored scales are more difficult to control and have fewer insecticidal products available, spraying the crawlers before they settle is imperative to control these sucking and destructive pests. Spray branches with a horticultural oil as soon as the small, mobile crawlers are detected. Since two generations occur per season in overlapping generations, examine infested plants periodically throughout the summer for other opportunities to treat the crawlers. Some labeled systemic insecticides may help to reduce population of these pests.
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NEWS-FLASH: BAGWORM EGGS HATCH
In late-breaking news, overwintered bagworm (Thyridopteryx ephemeraeformis) eggs have hatched in the Cincinnati area, and first instar larvae were observed on Wednesday (May 19). The eggs spent the winter inside the dead, mummified bodies of last seasons females, with the dead females reposing in their bags.
When the eggs hatch, the small, blackish first instar larvae exit the bottom of the bag and spin down on a strand of silk. They may immediately begin feeding, and constructing their bag, or the silk thread my catch the wind and blow the larvae to new destinations. This wafting about on the wind is called "ballooning," and it is the primary means of dispersal for the insect since female bagworm moths never fly. In fact, the female larvae never pupate. They mate in the last instar larval stage, a form of reproduction called paedogenesis (reproduction by larvae). Only the males pupate and emerge as flying moths.
Bagworms can build up heavy local populations on preferred hosts, especially arborvitae, cedar, and juniper. If crowded, they may eat buds on these plants, causing branch dieback, and open, dead areas. If defoliation is excessive, plants may die the following season. Bagworms also attack numerous deciduous plants, although injury is generally not nearly as severe as on evergreens.
Keep an eye out for this pest, especially on plants infested last season. If there are just a few bagworms on a plant, they can be handpicked and destroyed. Bacillus thuringiensis, or Bt (e.g. Dipel, Thuricide, or Caterpillar Attack), is effective against bagworm caterpillars when bags are less than 3/8" in length. Other properly labeled insecticides will have to be used if the caterpillars are allowed to get larger.
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DISEASE DIGEST
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FUNGICIDE "FAILURES", PART IV: IMPROPER TIMING
Previous BYGL issues discussed faulty diagnosis of disease, faulty diagnosis of the type of disease, and faulty fungicide selection as reasons that fungicides sometimes seemingly "fail". This week, let's look at the most common reason for "failure" ... our improper timing of application.
We often feel that, once the disease is properly diagnosed and the right fungicide is selected, then everything should fall into place, right? Not. The fact is that for fungicides to be effective, we must apply them before the disease develops. This is clearly true for "protectant" fungicides, and it is effectively true even for products which are described as "eradicants" and "curatives".
Let's use as an example rose black spot disease (Diplocarpon rosae). The fungal pathogen infects through leaves of susceptible rose taxa, if there are a certain number of hours of leaf wetness at a given temperature. Under these conditions spores germinate and penetrate the leaf surface and into leaf cells where the fungus establishes a host-parasite infection. Protectant fungicides are applied to the foliage to kill the fungus during its period of spore germination and attempted penetration of the leaf. These fungicides are essentially a toxic barrier to the fungus, preventing the fungus from getting inside the leaf where the infection occurs. If the fungicide is not present and infection does occur, some time later (typically a week or more) symptoms of black spot disease become evident (black spots, foliar yellowing, leaf drop, plant stress). Eradicant or curative fungicides provide a little leeway, along the order of getting rid of the fungus within 24-72 hours of initial infection.
There are several important things to keep in mind relative to this disease progression. First of all, you cannot see any of this happen, at least until symptoms of black spot develop, perhaps 7-10 days or more after initial infection. Diplocarpon rosae spores are invisible to the naked eye and we also cannot see the spores germinate, penetrate, or infect the leaf cells. Second, even the eradicant and curative products will not stop infections beyond a few days at most. So, you may spray a fungicide on what looks like a perfectly healthy, non-infected rose leaf which is nevertheless already infected and fated to develop rose black spot. When the disease develops, of course, we rage about the fungicide not working. The fact is that it never had a chance to work if it was applied after the infection was underway. This hardly seems fair, but such is the problem with disease control. It is largely preventive in nature. You must prevent infections, not see the disease symptoms and then try to get rid of the problem.
With most diseases, all is not necessarily lost once you see the disease, since in most cases the disease is reasonably localized and prevention of new infections is helpful in disease control even if you cannot get rid of the infections already present by using fungicides. Applications after symptoms are observed make sense if there is a repeating cycle of the disease on the host. For example, rose black spot keeps going and going all season long, so even if you see symptoms it makes sense to prevent new infections which will surely come if weather remains wet.
However, with cedar hawthorn rust disease, there is no repeating infection cycle on the hawthorn after initial infections in the spring. Once you see the rust spots on the leaves, there is no reason to spray. What's done is done and there are no more infections that will come that season, so more fungicide applications are beside the point. Of course, the key in both cases is to prevent initial infection ... if the particular disease in question is deemed important enough to prevent. Remember, that each disease is unique, and that understanding the disease cycle for that particular disease is the key to effective fungicide use.
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MOIST CHAMBER
Some of the diseases noted by Nancy Taylor in the PPDC this past week included: downy mildew of alyssum, Pythium root rot of alyssum, Pythium stem rot of cabbage, and Cycloneusma needlecast of Scots pine.
Other diseases noted by BYGLers:
* FIREBLIGHT on CALLERY PEAR was noted by Nancy Taylor in the Columbus areas. Nancy reported the development of the typical "shepherds crook" fireblight strikes on Callery pear street trees. Fireblight is a bacterial disease of certain plants in the rose family (Rosaceae), such as apple and crabapple, pear, pyracantha, mountainash, and cotoneaster. Epidemics of fireblight are favored by warm, wet weather during bloom of the affected host plants.
* BACTERIAL BLIGHT OF LILAC. Randy Zondag reported that less than usual levels of bacterial blight of lilac are being observed this spring in Lake County. Perhaps this is not too surprising since we tend to see the worse cases of this disease (and bacterial blight of magnolia) in years in which cold temperatures and frost injury occur along with lilac leaf emergence. Randy reported above average warm temperatures during leaf emergence there. This is a reminder once again that each disease has its own unique profile with specific environmental conditions that favor disease development.
* ASH ANTHRACNOSE. Northern Ohio BYGLERS noted extensive ash anthracnose, with blotching of leaf tissue and considerable leaf drop due to this common disease. As noted previously, typically, even with noticeable leaf drop, ashes recover well from this early season disease of the foliage, and new infections are less and less likely as the weather warms.
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TURF TIPS
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FERTILIZER RATIOS FOR MAY TURF
A "complete" or "balanced" fertilizer contains Nitrogen (N), Phosphorus (P), and Potassium (K) with a ratio proportionate to the levels of those nutrients in the leaf tissue. This is not the same as a "corrective" fertilizer that addresses nutrient deficiencies, or a "starter" fertilizer, that contains higher levels of P. A balanced fertilizer is deemed more of a "maintenance" fertilizer.
So, what is the ideal balanced fertilizer ratio for this time of year? Generally, a 3-1-2, 4-1-2 or 5-1-2 ratio is considered best for Ohio lawns. Some recommendations might call for a 1-0-1, if P levels are high, or if P applications are restricted.
In addition to the ratio, it is important not to stimulate excessive growth with quick-release fertilizers at this time of year. If the turf is over-stimulated with excess N, it can lead to disease problems, thatch buildup, and excessive leaf growth ... at the expense of root & rhizome growth.
Slow-release fertilizers will provide nutrients over a longer period of time. These include: sulfur or polymer-coated urea, urea formaldehyde, methylenediurea, dimethylenetriurea, or natural organic nitrogen. Ideally, a fertilizer with a 30-50% slow-release mechanism is preferred for applications made at this time of the year.
Finally, the amount of fertilizer product is significant. To ensure healthy growth without over-stimulation, a moderate fertilizer application should be made at 0.5 - 1.0lb N/1000 sq.ft.
Note: It is strongly recommended that a soil test be performed in early spring, to address the individual needs of the turf.
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BTA? TIMING'S EVERYTHING
Dave Shetlar reported that overwintered BLACK TURFGRASS ATAENIUS (BTA), Ataenius spretulus (Haldeman) beetles have emerged and will be laying eggs in golf courses. It favors Kentucky bluegrass, annual bluegrass, and creeping bentgrass that have a dense layer of thatch. These 3/16", shiny black beetles have two generations a year in Ohio. The second generation can be especially damaging to turfgrass if the number of grubs reaches 250-300 grubs/sq.ft. Irrigated fairways with a great deal of annual bluegrass are commonly damaged by the grubs and may wilt, then turn brown. When this occurs, the turf will flip up, exposing the white, 1/4" mature grubs.
Where the BTA has been a problem in the past, spray affected areas with a labeled pyrethroid in early to mid-May to kill the adults as they land in the turfgrass. Another application can be applied in August if necessary. If other white grubs are the target, treat with imidacloprid or thiamethoxam in early May, or halofenozide in early June, to control the BTA and other grub species.
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INDUSTRY INSIGHT
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GOOD NEWS FOR THE GREENHOUSE INDUSTRY
Dave Dyke reported that for the first time in the last few years, the weather in the Cincinnati area on Mother's Day weekend was not only good, it was great! Garden centers and greenhouses did a bustling business, and their owners were walking with a new bounce in their step. Quite a welcome change! More good news - the crops look super, with very little disease or insect problems encountered so far this season.
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COMING ATTRACTIONS
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CHRISTMAS TREE & NURSERY CROP INSECT & DISEASE CLINIC
This clinic will be held Tuesday, June 8, 2004, 6:30-8:00pm at Herbert's Pine Hollow Tree Farm, 2097 Park Rd., SE. Carrollton, Ohio. Rain or Shine! Featured Speaker: Dr. Dave Shetler, OSU Extension Entomologist. For more information, contact OSU Extension, Carroll County at 330-627-4310.
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40th OHIO PLANT DIAGNOSTIC WORKSHOPS
As noted previously, four Ohio Plant Diagnostic Workshops are coming soon. The programs will be taught by Joe Boggs and Jim Chatfield as well as the assembled talent at each site. Topics include Ash Diagnostics and Emerald Ash Borer, The 20 Questions of Plant Diagnostics, Sudden Oak Death and Ramorum Dieback, Perspectives on Invasive Species, and Diagnostic Challenges, a Diagnostic Walk and Diagnostic Sample Sharing. The cost is $30 and any proceeds after direct expenses will be used to support the OSU Clayton Wayne Ellett Plant & Pest Diagnostic Clinic.
Programs in June include:
June 1: Secrest Arboretum, OARDC, Wooster OH. Contact Cheryl Fischnich at fischnich.1@osu.edu or 330-263-3832 or http://north.osu.edu/downloads/DwkspExt.pdf
June 2: Washington State Community College, Marietta OH. Contact Erik Barrett at barrett.90@osu.edu
June 3: Lodge at River Bend in Hancock County, OH. Contact Cheryl Fischnich at Fischnich.1@osu.edu or 330-263-3832 or Nancy Kronberg at kronberg.3@osu.edu
June 7: Spring Grove Cemetery and Arboretum, Cincinnati, OH. Contact Joe Boggs at boggs.47@osu.edu or 513-946-8993
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WOSU's GREEN SCENE
Join WOSU's News 820 AM host Tom Wiebell and his trifecta of guest stars this Friday night from 6:30 to 8:00 Pm on Green Scene, the weekly gardening and landscaping Q&A Show for central Ohio. OSU Horticulture and Crop Science Department's Marianne Riofrio, Barb Bloetscher, and Mary Maloney will display their usual quick-witted and
informed horticultural advice.
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BYGLOSOPHY
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"As is the gardener, such is the garden"
- Hebrew
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