Calling All Private Pesticide Applicators

Are you a licensed private pesticide applicator in Ohio? If so, it is that time of year to review your applicator recertification status and determine if you need to attend recertification classes before March 31 or retest. The Ohio Department of Agriculture provides private applicators two options to keep their license current: 1.) retest every three years or 2.) attend three hours of recertification classes every three years. The three hours of recertification classes must include:

1 hour (minimum) of core + 1/2 hour (minimum) of credit in every category on license + additional training in any category of approved pesticide applicator training = 3 total hours (minimum) of recertification training   

To check the status of your pesticide applicator license, please go to: Enter your last name and pesticide applicator license number. The website will then give you a summary of the credits you have earned and those still needed, including category types and expiration date. If you need help, please email or call me.

Help…my license expires this year!  There are many opportunities to attend private recertification classes around the state this winter and early spring. Many of these programs offer core in addition to all the remaining private categories, including 5p (Greenhouse). To check the program dates, times, and locations, please visit: Click on each group of counties to see a list of classes in that region. The website is updated as new programs are scheduled.

Can’t make one of these programs? Contact your local county extension office to inquire about viewing recertification videos for the categories needed and any fees that may apply.

REMINDER: 2016 OSU/AmericanHort Poinsettia Trials Open Houses Begin this Week!

The holidays are fast approaching – and yIMG_2007ou are cordially invited to the following Ohio greenhouses to see new and traditional poinsettia cultivars on display. Please reserve the following dates and times to attend. No reservations are needed.  Come view and evaluate new cultivars and network with other growers.

  • FRIDAY, DECEMBER 2 – 1:00 – 3:00 PM
    Bostdorff Greenhouse
    18832 N. Dixie Highway
    Bowling Green, OH 43402
  • WEDNESDAY, DECEMBER 7 – 1:30 – 4:30 PM
    HJ Benken Florist & Greenhouse
    6000 Plainfield Rd.
    Cincinnati, OH 45213-2335
  • FRIDAY, DECEMBER 9 – 1:00-3:00 PM
    Barco and Sons, Inc.
    6650 Branch Rd.
    Medina, OH 44256

Questions?  Please contact Dr. Claudio Pasian at 614-292-9941

Upcoming Educational Opportunities

As the holidays approach and poinsettias hit the market, educational events in Ohio hit the ground running! Here are a few opportunities that you might be interested in attending:

50th Annual Ohio Turfgrass Foundation Conference and Show with the OSU Green Industry Short Course

December 5-8, 2016
Greater Columbus Convention Center
Columbus, OH

For 50 years, the OTF Conference & Show has offered quality education close to home. Our partnership with the OSU Green Industry Short Course has strengthened the conference by introducing more opportunities to increase your knowledge of trees and ornamentals. Whether you manage turf, trees or anything in between, the education conference is a can’t miss event for the serious professional.

For details and registration information, please visit:

Midwest Green Industry Xperience (MGIX) 2017 from the Ohio Nursery & Landscape Association

January 16-18, 2017
Greater Columbus Convention Center
Columbus, OH

MGIX 2017 features:

  • More than 90 education sessions led by national speakers comprise a wide variety of topics, from business and marketing best practices to design, irrigation, and lighting trends. Educators from The Ohio State University lead 24 sessions focused on horticulture, pest and disease management, and industry research.
  • Pre-conference sessions on Sunday, January 15 include Perennial Plant Association’s Annual P.L.A.N.T. Seminar, Permeable Interlocking Concrete Pavement Specialist Course by ICPI, and Landscape Business BootCamp by Greenmark Consulting.

For details and registration information, please visit:


OSU Cultivar Trials: 2016 Season Summary

By William Barnhill, Claudio Pasian, and Tim Rhodus

Department of Horticulture and Crop Science, The Ohio State University

The 2016 summer trial was successful and showcased 607 plant entries representing 24 different commercial brands. Details can be found in the OSU Cultivar Trials: 2016 Season Summary.



A new resource for greenhouse growers to help identify microbe-containing products advertised to enhance growth of Greenhouse Floriculture Crops

Michelle L. Jones and Laura Chapin

Department of Horticulture and Crop Science, The Ohio State University

The production of ornamental and edible crops in commercial greenhouses is high-input specialty crop agriculture. Much of the industry relies on chemical pesticides (insecticides, miticides, fungicides, and bactericides) to control pathogens and insect pests, and intense irrigation and fertilization to insure the production of high quality crops. Consumers are becoming more aware of and concerned about how their purchases impact the environment, and there is increasing market pressure on commercial greenhouses to decrease their chemical usage. Consumer, market, and grower interest in reducing the environmental impact of the greenhouse industry has led many commercial greenhouses to adopt more sustainable growing practices and to pursue sustainable certification. A survey of the industry, funded through a NIFA SCRI planning grant, confirmed that a majority of respondents were interested in using biological products as part of a more sustainable crop production system. While respondents were familiar with the use of natural predators and biopesticides, they were less familiar with the biostimulant class of bioproducts. Biostimulants directly influence plant metabolism and growth. They enhance plant growth and overall plant health by increasing root elongation, nutrient uptake, and stress tolerance.

One barrier identified by Greenhouse industry stakeholders to the use of biostimulants has been the lack of a single, non-bias resource that contains biostimulant products available for use on greenhouse floriculture crops. A database resource was created that includes a compilation of products that (1) contain microorganism(s), (2) are advertised as biostimulants (i.e., enhance plant growth), and (3) can be used in a greenhouse and/or on flowering plants.

To search for microbe-containing biostimulants for greenhouse crops please use the link below to go to the Greenhouse microbe bioproducts database.

This resource was developed with the support of the USDA National Institute of Food and Agriculture SCRI Planning Grant – Award # 2015-51181-24284 and the OSU D.C. Kiplinger Floriculture Endowment.  We are continuing to add to and update this resource.  If you have suggestions or product additions please contact Michelle Jones at