Pam Bennett, Barb Bloetscher, Joe Boggs, Jim Chatfield, Erik Draper, Dave Dyke, Gary Gao, David Goerig, Tim Malinich, Amy Stone, and Curtis Young.
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May 24, 2007
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This is the Eighth 2007 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 22, 2007 conference included: Pam Bennett (Clark); Barb Bloetscher (Entomology/C. Wayne Ellett Plant and Pest Diagnostic Clinic (CWEPPD Clinic)); Joe Boggs (OSU Extension Center at Piketon/Hamilton-Clermont); Jim Chatfield (OSU Extension Center at Wooster/Hort and Crop Science); Erik Draper (Geauga); Dave Dyke (Hamilton); Gary Gao (Delaware); David Goerig (Mahoning); Michael Loos (Cuyahoga); Tim Malinich (Lorain); Dave Shetlar (Entomology); Bill Snyder (Mahoning); Curtis Young (Allen); 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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The following weather information has been summarized from data collected from May 1-22, 2007. BYGLers have selected six locations to highlight different regions of the state to be included each week as seen in the table below. Additionally, there are weather station sites in Avon (Lorain County), Madison (Lake County), Perry (Lake County), at the Muck Crops Research Station (Huron County), at the North Central Research Station (Sandusky County), and at the Western Research Station (Clark County). The weather data collected from all the sites can be seen at http://www.oardc.ohio-state.edu/newweather/ .
| Weather Station |
Region of Ohio |
Ave. High Temp F |
Ave. Low Temp F |
Total Precip " |
Normal Precip " |
| Ashtabula |
NE |
67.8 |
42.9 |
NA |
2.2" |
| Wooster |
NE |
73.3 |
45.3 |
2.18" |
2.7" |
| Hoytville |
NW |
74.4 |
46.2 |
1.03" |
2.2" |
| Delaware |
Central |
77.5 |
49.0 |
0.17" |
3.0" |
| Piketon |
South |
77.5 |
49.0 |
0.17" |
3.0" |
| Jackson |
South |
77.8 |
46.3 |
0.3" |
3.0" |
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HORT SHORTS
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GDD (GROWING DEGREE DAYS)
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 the site below.
The range of GDD accumulations in Ohio from north to south is 365 to 740. Following is a report of GDD for several locations around Ohio as of May 23, 2007: Painesville, 365; Cleveland, 401; Toledo, 464; Canfield, 439; Lima, 459; Wooster, 489; Coshocton, 438; Columbus, 508; Springfield, 600; Dayton, 624; Cincinnati, 681; Ironton, 721; Portsmouth, 724; Piketon, 740; Marietta, 687; and Jackson, 725.
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.
Red Java weigela, first bloom, 365; black cherry, first bloom, 368; common sweetshrub, first bloom, 371; lesser peach tree borer, adult emergence, 372; 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; and 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; black vine weevil, first leaf notching due to adult feeding, 677; Washington hawthorn, full bloom, 731; and calico scale, egg hatch, 748.
Take some time to go to the GDD website at http://www.oardc.ohio-state.edu/gdd/ and see what it offers because it is more than just current GDDs. New additions to the Summary of Phenological Events chart include links to factsheets, bulletins and images related to most of the plants and pests highlighted on the web page. The information covered by these materials includes diseases, pests and research.
 
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PLANTS OF THE WEEK
Read all about perennials and landscape trees and shrubs in the ONLA publications "Perennial Plants for Ohio" and "Landscape Plants for Ohio." The descriptions and photographs of plants were provided for these publications by the OSU ENLT Team along with other industry plant lovers. These full-color publications are available at http://Buckeyegardening.com for $5.00. Click on "garden store" and then "ONLA plant guides." ONLA members can purchase these in quantities at a reduced price at http://onla.org.
PERENNIAL OF THE WEEK. Allium (Allium spp.) - This genus of bulbs has over 400 species with most of them onion-scented. It includes garlic, chives, leeks and the really cool bloomers - the ornamentals. Flowers on the ornamental type of allium vary in size, color and shape. The showy blooms arise on a stalk above the foliage, depending upon the species. Flowers can be purple, yellowish, whitish, or pink to purple and can be anywhere from 1" in diameter to around 6" in diameter. These plants are easy to grow in most soils and do best in full sun. They make great conversation pieces for any garden!
*WOODY ORNAMENTAL OF THE WEEK. Redvein Enkianthus (Enkianthus campanulatus). This wonderful, underused ericaceous (in the heath family; acid-loving) shrub is blooming in all its delicate glory now at Secrest Arboretum in Wooster. From the Ohio Nursery and Landscape Association's Landscape Plants for Ohio: "Small- to medium-sized shrub (6-10 feet) with layered branch structure, very attractive cream-yellow flowers outlined with red veins and outstanding fall color. Light green leaves turn to dark green by summer and then turn to a range of yellows, reds and oranges for fall color show. Prefers partial shade and acid soils."
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THE WEEKLY WEED
There were more than a few reports of CORN SPEEDWELL (Veronica arvensis) across the state this week. This low growing weed is beginning to flower and will continue to do so through the summer. Corn speedwell is a winter annual and germination of new plants will begin this fall and continue through next spring. The plant is prostrate and spreading from the base. It has opposite leaves that are hairy, egg-shaped to round, and only about 1/4" across. Flowers are pale blue or white and are borne on the upper 2/3 of the stems.
Cultivation is the simplest means of control, but this should be done before the plant flowers, producing seed for next year's crop. In turf areas, broadleaf herbicide mixtures containing 2,4-D, MCPP or trimec should provide adequate control. A thick, healthy turf, however, is usually the best defense.
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A ZONE TOO FAR?
The response of some plants to the erratic weather experienced throughout most of Ohio this year has served to illustrate the fact that horticulturists sometimes stretch the boundaries of what they grow. The very mild weather the last few winters has certainly allowed many of us to grow some plants that are normally associated with a more southern climatic zone. This winter also followed that pattern, for a while. The abnormally warm weather allowed many plants to begin extensive bud swelling, and even leaf development. In mid-February, the bottom fell out of the thermometer for 6 weeks, with temperatures dropping to around zero degrees many times across much of the state.
The resulting plant damage should serve as a reminder to plant trees and shrubs within their recommended climate zone. For example, several Ohio BYGL'ers have reported that CREPE MYRTLES (Lagerstroemia indica) across southern Ohio have shown varying symptoms of cold injury, from mild, to severe, to complete top die-back. Michael Dirr states that, "-5 to -10 degrees F is about the break point between a woody plant and herbaceous perennial" for L. indica.
Dave Dyke found that the consequence of the harsh winter for his beloved HARDY FUCHSIA (Fuchsia magellanica) or Magellan fuchsia, was perhaps even more severe. He obtained a sample of this very attractive shrub from one of his greenhouse clients for trial in his garden in the spring of 2004. It became a beautiful addition to his landscape, freezing back to the ground each winter, but then growing ever larger and more beautiful each summer. So far this spring, however, the plant appears to be just barely hanging on to a thread of life, managing to produce just 2 yellowish, clubby 1" high shoots. If the fuchsia doesn't make it, he will, like so many others, try again. Being an optimist has long been a prerequisite for being a farmer.
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BUG BYTES
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RAINING MAGGOTS
Dave Shetlar remarked that the "tiny worms" are falling from oak trees again. These are often the larvae of a gall midge, Contarinina spp., Family Cecidomyiidae.
The adult flies emerge in early spring and lay clusters of eggs in the flower bracts of oaks, mainly pin oaks. As the oval, 1/16" long white-beige-yellowish larvae develop, they feed on the pollen then unfurling leaves. After a few weeks, they begin to flip and land on the ground to pupate, usually en masse. The following spring, they emerge as adults, mate, and continue the cycle. The disconcertion arises from the numbers (hundreds sometimes) which land at one time, especially when the little maggots are crawling all over the hood of one's automobile!
Although this species does not appear to damage the oak flowers or leaves, the Contarinia species contain some harmful pests, such as the Douglas-fir needle midge, Contarinia pseudotsugae and the newly identified Swede midge C. nasturtii, which causes distortion of cole crops.
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AMBROSIA BEETLES RE-VISITED
Ambrosia beetles are wood borers that belong to the Family Scolytidae. The tiny 1/8" long beetles produce shot-sized entrance holes in tree bark. As the beetles bore through trees, they release fungi from special oral structures called mycetangia. The fungi colonize the wood, and serves as food for the beetle larvae. The larvae do not eat wood; they eat the fungal "ambrosia."
As the beetles tunnel forward, they push a mixture of excrement (frass) and wood particles backwards. The sticky mixture clings together as it is extruded from the entrance holes and has been commonly described as looking like "frass toothpicks." Joe Boggs observed and received images of "frass toothpicks" arising from the bark of stressed and dying trees. In recent years, this toothpick-like symptom has been almost exclusively associated with non-native ambrosia beetles. Indeed, such reports have appeared in the BYGL.
However, there are a number of native ambrosia beetles that also produce frass toothpicks. These include the yellow-banded timber beetle (Monarthrum fasciatum) that focuses on oak, maple, birch, sweetgum, blackgum, and hickory; and the beech timber beetle (Xyloterinus politus) that targets its namesake as well as oak, maple, birch, hickory, ash, and magnolia. While these beetles target stressed, dying, or dead trees, the bottom line is that frass toothpicks do not always point in the direction of non-native ambrosia beetles.
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FOURLINED PLANT BUG
Erik Draper and Joe Boggs reported that they observed fourlined plant bug (Poecilocapsus lineatus) nymphs and their feeding damage on perennials in northeast and southwest Ohio, respectively. This sucking insect feeds on over 250 herbaceous plant species. The quick-moving nymphs are reddish-orange with black wing-pads. The appropriately named adults vary from yellow to green in color and have four black stripes down the wings.
Like many plant-feeding hemipterans, the fourlined plant bug injects enzymes into the plant causing cells to collapse. The bugs then feed on the resulting "slurry." The damage appears as small, round, black sunken spots which may coalesce into extensive blackened areas on infested leaves. The symptoms are commonly mistaken for a plant leaf disease.
There is only one generation per year. However, both the adults and nymphs are heavy feeders. High populations can produce significant plant injury. Targeting the early instar nymphs for control now will reduce the overall damage caused this season by this insect. Refer to OSU Extension Bulletin 504, "Insect and Mite Control on Woody Ornamentals and Herbaceous Perennials," for a list of control materials.
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BAGWORM WATCH
In last week's BYGL (May 17, 2007, Issue 2007-07) it was noted that Dave Shetlar had observed the tiny "dunce cap-like" bags of first instar BAGWORMS (Thyridopteryx ephemeraeformis) in Lexington, KY. This week both Dave and Joe Boggs reported the same stage of bagworms in Columbus and Cincinnati, Ohio. Curtis Young made a special check on bagworms in Lima, Ohio on Wednesday, May 23, 2007, and observed the earliest hatchers on infested arborvitae. Bagworm season has begun! Remember, it will be awhile yet before all of the eggs will be hatched. Be patient. These little caterpillars in their little dunce cap bags won't cause a lot of damage for some time. Waiting until most or all of the eggs are hatched before applying management measures will increase the efficacy of the products when they are applied.
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ADDING COUNTIES TO THE EAB LIST
This past week has been a very busy discovery week for new EMERALD ASH BORER (EAB) (Agrilus planipennis) infestations in previously non-infested Ohio counties. On Wednesday, May 16, 2007, Curtis Young (the "suspicious call") discovered an infested ash tree on The Ohio State University Lima Campus in Lima, Ohio. After informing ODA and meeting with an ODA representative, further investigation revealed numerous infested trees throughout the campus. This was the first sighting of EAB in Allen County. A call from a member of the public (apparently not "suspicious") led to the discovery of an additional site in Worthington, Franklin County, Ohio. On Wednesday, May 23, 2007, ODA made a third announcement of a new discovery in Hamilton County, Ohio. A concerned homeowner reported finding a potentially infested ash tree off of Newtown Road in Anderson Township. ODA officials verified the find.
As a result of these three discoveries, all of Allen, Franklin and Hamilton Counties are EAB quarantined, making it illegal to take hardwood firewood and ash tree materials into neighboring un-infested counties. These materials can move freely between quarantined counties but cannot leave the infested counties. Violators face fines up to $4,000. It is also illegal to take hardwood firewood and ash tree materials out of the state of Ohio, per federal quarantine.
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THE OTHER BORERS
With all of the attention being given to emerald ash borer, don't forget about the other borers that impact our landscape trees and shrubs, the CLEARWING BORERS (Order: Lepidoptera, Family: Sesiidae). The clearwing borer season has also begun with the emergence of LILAC/ASH BORERS (Podosesia syringae) from infested ash trees and lilac shrubs. Curtis Young and Joe Boggs have both seen the papery pupal skins of emerged adult lilac/ash borers sticking out of the trunks of ash trees. The lilac/ash borers are just the first of a series of clearwing borers to emerge in the late spring and summer. The emergence of adult clearwing moths can extend over long periods of time after the initial onset. As each of the different clearwing borers emerge, the trunks of their susceptible host plants should be treated with preventative insecticides at the appropriate times to prevent significant infestation or re-infestation.
Let this report serve as a notice to plant health managers that if they have not already done so, now is the time to get their clearwing borer monitoring traps out in the field to detect the emergences of each of the significant borers. These traps provide a relatively easy, but very effective method to keep track of these very important ornamental plant and fruit tree pests. Pheromones to bait these traps are readily available through a number of catalogs and websites.
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WINDSHIELD WIPES
BYGLers also ran into a few other insects and mites this week, including:
* HONEY BEES are swarming in most Ohio counties right now. Most counties have several beekeeping clubs that publish a list of beekeepers who will collect these swarms of busy bees. Contact a local club or go to the OARDC Bee lab website at http://www.beelab.osu.edu/groups.asp which has a statewide list. Inform the caller that bees in a swarm are very docile, are not likely to sting and should not be killed.
* Several BYGLers reported that feeding damage caused by AZALEA LACE BUG (Stephanitis pyriodes) to the leaves of its namesake host is now becoming evident. Lace bugs suck plant juices through their piercing/sucking mouth parts. Azalea lace bugs feed on the underside of the leaves and produce tiny yellow or whitish spots (stippling) on the upper leaf surface. Lace bugs also deposit unsightly hard, black, varnish-like spots of excrement onto the leaf surface as they feed. Heavy feeding from large infestations may result in large, yellow, blistered areas on leaves, chlorotic, yellowed leaves and early leaf drop. Damaging populations can be controlled by applying a properly labeled insecticide to the underside leaf surface.
* MAPLE PETIOLE BORER (Caulocampus acericaulis) is beginning to produce noticeable leaf drop on its namesake in southwest Ohio. The larvae of this sawfly bore into the petioles of maple leaves. Their feeding activity causes the petioles to break sending the otherwise healthy looking leaf to the ground. The fallen leaves have short (1-2"), hollow petioles. Larvae remain inside the portion of the petiole attached to the twig, so raking and destroying fallen leaves will not reduce the population. There is only one generation per year and damage is seldom severe enough to cause serious harm to the tree.
* Joe Boggs reported that a participant at a Gall Workshop held at the Cincinnati Nature Center thrilled fellow galloholics with a specimen of the delicate TRANSLUCENT OAK GALL. The gall resembles a tiny, pink balloon measuring 1/2"-3/4" in diameter, and it arises from the lower leaf surface of red, scarlet, and black oaks. It is produced by the wasp Amphibolips nubilipennis (family Cynipidae). Slicing the succulent gall open will reveal the single wasp larva housed in a chamber in the center of the gall. The larval chamber appears to be resting on a white pedestal. As with most oak galls, these galls can be appreciated free of fear for the health of the host tree.
* Black locust (Robinia pseudoacacia) is in full bloom over much of Ohio which is a phenological indicator of the emergence of two very important borers in the landscape. The first is the native borer of birch trees, the BRONZE BRICH BORER (Agrilus anxius), and the second is the exotic borer of ash trees, the EMERALD ASH BORER (A. planipennis). Management tactics to reduce the impacts of both of these beetles should be implemented in the near future.
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DISEASE DIGEST
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THE RUST REPORT
Jim Chatfield collected a number of CEDAR RUST samples from junipers at Secrest Arboretum in Wooster for use in Lanny Rhodes OSU Department of Plant Pathology undergraduate class this week. From a single juniper, there were samples of the orange pustules of CEDAR QUINCE RUST slathered along the twig, golf-ball sized woody CEDAR APPLE RUST galls and marble-sized woody CEDAR-HAWTHORN RUST galls. All of the galls had already spent their spawn of orangish spores into the air over the past two weeks. These infestations on junipers are done for the year in terms of spore production.
On hawthorn, the results of the infections caused by cedar apple rust and cedar hawthorn rust spores from the juniper are just now resulting in tiny pinprick-sized orange spots on the upper sides of the hawthorn leaves. Over the next month, recombination of strains of these fungi will mate in the leaves. Then, rust pustules will emerge from the underside of the leaves. These spores will not reinfect hawthorns or other "rosaceous" hosts, but will only infect junipers. The upshot of these fungal life cycle realities is that there is no point in applying fungicides to prevent infections on hawthorns or apples (and crabapples) at this point.
Other rust fungi noted this past week were the very common MAY-APPLE RUST on may-apple and possibly the first report of RUST ON OHIO BUCKEYE. Jim Chatfield noted yellowish spots on the upper leaf surface and rust pustules on leaf undersurfaces on Ohio buckeye leaves on a tree along the Kokosing Trail in Knox County. This disease is not listed in C. Wayne Ellett's Ohio Plant Disease Index and we will investigate further to see if it has been reported elsewhere.
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SOOTY MOLD NOT DISEASE
A portion of this week's BYGL discussion was dedicated to pigeonholing sooty mold. This organism, which grows on the sweet excrement (called honeydew) of aphids, adelgids and some scales can coat affected plants with a layer of gray to black velvety mold. The plant is not actually infected by this growth and it can easily be rubbed off the surface of leaves or needles. In fact, if the insect population is high enough, the mold can be found growing on sidewalks, decks or anything else on which the insect droppings fall. Control sooty mold by eliminating the source of honeydew, the insect pest. The mold will eventually weather away, but a high pressure stream of water can accelerate the process.
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MOIST CHAMBER
Other diseases noted by BYGLers around Ohio include light infestations of ASH ANTHRACNOSE around the state, a PLUM BLACK KNOT samples in Cuyahoga and Lorain Counties, BEECH ANTHRACNOSE from Wayne County, CERCOSPORA LEAF SPOT on leucothoe from Secrest Arboretum in Wayne County, and FROGEYE LEAF SPOT on crabapple in the Crablandia plots at Secrest Arboretum.
Light incidence of disease continues to be the norm at many Ohio locations. Lanny Rhodes' class looked at over 1000 roses at the Park of Roses in Columbus this past week and noted no lesions of ROSE BLACK SPOT disease. APPLE SCAB on crabapple is very light in Crablandia, and only a few lesions of GUGNARDIA LEAF BLOTCH of Aesculus were noted on buckeyes and horsechestnuts at Secrest Arboretum.
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TURF TIPS
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BEWARE OF BILLBUGS
Dr. Shetlar warned that bluegrass billbugs may enjoy a banner year this season and that turfgrass managers who have had problems with the bluegrass billbug in past years should treat now, or monitor for their activity. On a sunny day, the billbugs may be seen running along the sidewalk.
By now, the billbugs have begun inserting eggs into the base of the grass stem, and will continue to lay eggs until the end of July. Application of a labeled insecticide to control adult billbugs will curtail some damage if done soon. Ideally, the treatment should have been made in April.
Imidacloprid (Merit) and halofenozide (MACH 2) can be applied from May through the first 3 weeks in June to control billbug larvae as well as grubs, and at least suppress chinch bug populations. Pyrethroids (bifenthrin, beta-cyfluthrin, deltamethrin, and lambda-cyhalothrin) are excellent products for controlling adult billbugs and chinch bugs. A fairly new product, Arena (clothianidin), when applied in the first two weeks of May, will also eliminate turfgrass caterpillars and should control the white grubs as well.
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INDUSTRY INSIGHT
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INDUSTRIAL STRENGTH TOOLS
Randy Zondag noted that the nursery and landscape trade has many tools at their disposal. For years, insects and diseases had to become a problem before they were controlled, leaving plants damaged and customers unhappy with products. OSU, OARDC, USDA ARS and OSU Extension teamed up to develop a website that gives the industry real-time data and puts it in a form to help growers predict major pest issues. The phenology calendar located at http://www.oardc.ohio-state.edu/gdd/ gives growers in Ohio the ability to match degree days with a calendar of major pests and the plants in bloom at that time. Scouts can look at specific crops and determine if control is needed.
Weather station websites such as http://www.oardc.ohio-state.edu/usdaweather/windgraph1.asp?location=sunleaf give growers the chance to see current wind speed, temperatures and relative humidity. This site has archived weather data from that past 5 years. Some stations provide soil temperature and soil moisture data. This information can be used to determine when frost has entered or left the soil or to assist in determining when irrigation is needed. Certain stations have leaf wetness charts to help growers determine when a disease infection period has occurred.
The grower has a great tool in the Buckeye Yard and Garden Line (BYGL). This newsletter contains both text and images of horticultural problems that occurred in Ohio over the past week, providing links to bulletins and fact sheets. Online bulletins can be found at the Ohioline website at http://ohioline.osu.edu/lines/bulls.html. These bulletins provide current recommendations for pest control and can be downloaded or printed. Individual fact sheets are available at http://ohioline.osu.edu/lines/hygs.html. The fact sheets provide more detail on life cycles and how the pest can be identified.
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WHITE PINE WEEVIL DAMAGE ALREADY EVIDENT
Randy Zondag reported that damage caused by white pine weevil (Pissodes strobe) larvae to the main leaders of conifers is already becoming evident in northeast Ohio. As tops of infested conifers turn reddish-brown, weevil infestations become easy to spot.
In the spring, overwintered females deposit eggs in the terminals of a wide range of conifers including: eastern white, Scotch, jack, red, and pitch pine; Douglas-fir; and all spruces. The resulting white, legless, slightly curved, grub-like larvae tunnel downward just beneath the bark feeding on phloem tissue until pupation. The tops of weevil infested trees become wilted, turn brown, and die. Main leaders are often curved into a "shepherd's crook." Removing the paper-thin bark from infested leaders will reveal reddish-brown frass (insect excrement) and weevil larvae.
It is too late to apply insecticides to kill the developing larvae. However, it is not be too late to reduce populations by removing infested terminals. Wilted terminals should be pruned from trees and the cut ends closely examined to determine if the entire infestation has been removed. Infested material must be destroyed since the weevils will complete their development in cut tops left on the ground. Larval development is typically completed by mid-to-late summer. There is only one generation per year.
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COMING ATTRACTIONS
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2ND ANNUAL NORTHEAST OHIO DIAGNOSTIC CLINIC
On Wednesday, June 6, 2007, at the Donald W. Meyer Center of Big Creek Park in Chardon, Ohio, Jim Chatfield and Erik Draper will lead the discussion and confusion as they try to solve any and all plant diagnostic dilemmas. This workshop will be hands-on with samples galore, an Emerald Ash Borer update, lots of samples, Dr. Dendro Phile will speak for the trees, discuss digital diagnostics and look at lots of plant samples. Attendees are encouraged to bring along their own diagnostic dilemma samples to see if the combined expertise of the group can help solve the mystery. The $30 fee includes lunch, handouts, snacks and prizes. To register, or for more information, call the Geauga County Extension office at 440.834.4656 or for directions see this link http://www.geaugaparkdistrict.org/parks/bigcreek.shtml#DIRECTIONS
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HAMILTON COUNTY EXTENSION RELOADED GREENHOUSE TOUR
As announced in last week's BYGL, there will be an "Extension Reloaded" Greenhouse Tour on June 6. The tour will be held in conjunction with the June Cincinnati Flower Growers Association (CFGA) meeting, but all commercial growers are welcome Details include 7 tour stops, the CFGA meeting, dinner at Great Scott Restaurant and a summary presentation by OSU Extension Specialists Claudio Pasian, Dennis Lewandowski, Luis Canas. It should, once again, be a great tour! Please RSVP to Bard's (513) 752-9355, by Monday, June 4 if you plan to eat dinner. Cost is $20 for the dinner. Please contact Dave Dyke at (513) 505-1202 or dyke.15@cfaes.osu.edu for more information.
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NEW DEVELOPMENTS IN VEGETABLE GARDENING IPM
Join OSU Extension specialists Dr. Celeste Welty, Jim Jasinski, and Dr. Sally Miller as well as Purdue Associate Professor, Mark Tucker as they share the latest and greatest information on IPM for the vegetable garden on June 7th in Columbus, Ohio from 9:00 a.m. until 4:00 p.m. This workshop is open to Extension personnel with consumer vegetable garden responsibilities as well as Master Gardener volunteers. For details on the program refer to the following website: http://clark.osu.edu/hort/garclass.htm Cost for the program is $30.00 for OSUE personnel and $20.00 for MG volunteers.
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40TH ANNUAL NURSERY GROWERS OF LAKE COUNTY OHIO (NGLCO) FIELD DAY
40TH ANNUAL NURSERY GROWERS OF LAKE COUNTY OHIO (NGLCO) FIELD DAY is August 14, 2007. The NGLCO Field Day will be held at Holden Arboretum in Kirtland Ohio. The program this year will feature garden tours of the 3500 acre Holden Arboretum - this year featuring a garden railroad. Time and location information will be on the following website http://www.nglco.com/fieldday.htm . Master Gardeners and students will receive a special price. For further information call 440-241-7969.
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BYGLOSOPHY
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"An idealist is one who, upon noticing that a rose smells better than a cabbage, concludes that it will also make better soup." H.L. Mencken
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