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Home BYGL Hort Shorts July 3, 2008 GROWING DEGREE DAYS - July 3, 2008
GROWING DEGREE DAYS - July 3, 2008 Print E-mail
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 1,022 to 1,367. Following is a report of GDD for several locations around Ohio as of the end of the day of July 1, 2008: Painesville, 1,022; Cleveland, 1,054; Toledo, 1,132; Canfield, 1,047; Lima, 1,095; Wooster, 1,073; Coshocton, 1,148; Columbus, 1,267; Springfield, 1,223; Dayton, 1,231; Cincinnati, 1,305; Ironton, 1,302; Portsmouth, 1,324; and Piketon, 1,367.

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.

Japanese beetle, adult emergence, 970; rosebay rhododendron, first bloom, 1,010; June bride littleleaf linden, full bloom, 1,115; bottlebrush buckeye, first bloom, 1,158; Ural falsespirea, first bloom, 1,170; panicled goldenraintree, full bloom, 1,251; rose-of-sharon, first bloom, 1,347; pine needle scale, egg hatch - 2nd generation, 1,349; mimosa webworm, egg hatch - 2nd generation, 1,920; euonymus scale, egg hatch - 2nd generation, 1,923; magnolia scale, egg hatch, 1,938; and banded ash clearwing borer, adult emergence, 2,195.

For more information, see:

Search PlantFacts.osu.edu
Last Updated ( Friday, 04 July 2008 10:39 )
 

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