|
| Updated:
April, 2008 |
The Grapevine
| What Are Growing Degree Days? |
Don't Guess - Soil Test !!!!! |
| The Emerald
Ash Borer Dilemma! |
Pond Clinic |
| See 1,500 Blooming Roses June 14 |
|
What Are Growing Degree Days?
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
following website: http://www.oardc.ohio-state.edu/gdd/.
You will also find a listing at this site of various development stages
of plants and insects and how many GDD are needed.
The range of GDD accumulations in Ohio from north to south is currently 61 to 161. Following is a report of GDD for several locations around Ohio as of April 9, 2008: Painesville, 65; Cleveland, 66; Toledo, 61; Canfield, 70; Lima, 68; Wooster, 77; Coshocton, 85; Columbus, 98; Springfield, 87; Dayton, 92; Cincinnati, 136; Ironton, 149; Portsmouth, 151; and Piketon, 161. As of April 16, there were 118 Growing Degree Days in Marysville.
To put these GDD accumulations into perspective, the following is a 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. Northern lights forsythia, first bloom, 58; red maple, full bloom, 75; star magnolia, first bloom, 83; border forsythia, first bloom, 86; eastern tent caterpillar, egg hatch, 92; Manchu cherry, first bloom, 93; northern lights forsythia, full bloom, 94; Norway maple, first bloom, 116; border forsythia, full bloom, 116; chanticleer callery pear, first bloom, 123; sargent cherry, first bloom, 127; larch casebearer, egg hatch, 128; Japanese pieris, full bloom, 129; saucer magnolia, first bloom, 133; common flowering quince, first bloom, 137; Bradford callery pear, first bloom, 142; European pine sawfly, egg hatch, 144; weeping Higan cherry, first bloom, 145; P.J.M. rhododendron, first bloom, 147; chanticleer callery pear, full bloom, 149; Norway maple, full bloom, 149; inkberry leafminer, adult emergence, 150; sargent cherry, full bloom, 151; star magnolia, full bloom, 151; Allegheny serviceberry, first bloom, 153; Manchu cherry, full bloom, 155; spring snow crabapple, first bloom, 155; apple serviceberry, first bloom, 159; spruce spider mite, egg hatch, 162; and Bradford callery pear, full bloom, 164.
Understanding Growing Degree Days helps a lot in understanding why plants develop according to temperature and not by the calendar. It will also help you in understanding when different insects appear.
The range of GDD accumulations in Ohio from north to south is currently 61 to 161. Following is a report of GDD for several locations around Ohio as of April 9, 2008: Painesville, 65; Cleveland, 66; Toledo, 61; Canfield, 70; Lima, 68; Wooster, 77; Coshocton, 85; Columbus, 98; Springfield, 87; Dayton, 92; Cincinnati, 136; Ironton, 149; Portsmouth, 151; and Piketon, 161. As of April 16, there were 118 Growing Degree Days in Marysville.
To put these GDD accumulations into perspective, the following is a 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. Northern lights forsythia, first bloom, 58; red maple, full bloom, 75; star magnolia, first bloom, 83; border forsythia, first bloom, 86; eastern tent caterpillar, egg hatch, 92; Manchu cherry, first bloom, 93; northern lights forsythia, full bloom, 94; Norway maple, first bloom, 116; border forsythia, full bloom, 116; chanticleer callery pear, first bloom, 123; sargent cherry, first bloom, 127; larch casebearer, egg hatch, 128; Japanese pieris, full bloom, 129; saucer magnolia, first bloom, 133; common flowering quince, first bloom, 137; Bradford callery pear, first bloom, 142; European pine sawfly, egg hatch, 144; weeping Higan cherry, first bloom, 145; P.J.M. rhododendron, first bloom, 147; chanticleer callery pear, full bloom, 149; Norway maple, full bloom, 149; inkberry leafminer, adult emergence, 150; sargent cherry, full bloom, 151; star magnolia, full bloom, 151; Allegheny serviceberry, first bloom, 153; Manchu cherry, full bloom, 155; spring snow crabapple, first bloom, 155; apple serviceberry, first bloom, 159; spruce spider mite, egg hatch, 162; and Bradford callery pear, full bloom, 164.
Understanding Growing Degree Days helps a lot in understanding why plants develop according to temperature and not by the calendar. It will also help you in understanding when different insects appear.
Don't
Guess - Soil Test !!!!!
The only way to know if the soil in your garden or lawn needs liming,
or is low in phosphorus or potassium, and how much lime is needed, is to
have the soil tested by a commercial soil testing laboratory. The
soil test kits and soil pH probes sold in many hardware stores may be cheap,
but you get what you pay for! The services offered by professional laboratories
are very cost-effective when the risk of losing plants by sending pH and
nutrient levels in the wrong direction are taken into account. Also,
laboratory soil test reports will account for the type of soil you have and
make specific recommendations as to the amount of product you will need to
apply per acre or per 1000 sq ft based on the type of plants you want to
grow. Lime should only be applied when a soil test indicates that it
is needed. As with most soil amendments it should be incorporated into
the soil root zone layer. So, is it time to lime? It might be.
We suggest that you follow the tried and true gardening and farming axiom:
The only way to know if the soil in your garden or lawn needs liming,
or is low in phosphorus or potassium, and how much lime is needed, is to
have the soil tested by a commercial soil testing laboratory. The
soil test kits and soil pH probes sold in many hardware stores may be cheap,
but you get what you pay for! The services offered by professional laboratories
are very cost-effective when the risk of losing plants by sending pH and
nutrient levels in the wrong direction are taken into account. Also,
laboratory soil test reports will account for the type of soil you have and
make specific recommendations as to the amount of product you will need to
apply per acre or per 1000 sq ft based on the type of plants you want to
grow. Lime should only be applied when a soil test indicates that it
is needed. As with most soil amendments it should be incorporated into
the soil root zone layer. So, is it time to lime? It might be.
We suggest that you follow the tried and true gardening and farming axiom:
Don't Guess, Soil
Test!
Back to the Table of Contents
The
Emerald Ash Borer Dilemma!
As I’m sure you are aware, Union County is now among the “positive” sites with the Emerald Ash Borer.
Although we have only identified it on one site, it had been there for
several years, based upon the damage to the tree. It is impossible
to determine how quickly it will spread from there, or whether there are
already other sites in the county. Although it is not practical to
treat woodlot trees, some of you may decide to treat several valuable trees
in your yard. Remember, if you make this decision, it is likely that
this will be an annual treatment and expense.
There are several options if you make this decision. In fact, I would determine how much the annual treatment will be before you make the decision. There are several homeowner materials that you can apply. There are also several professionally applied insecticides that are good as well. Two new products have a 24C label for use in Ohio. They are Safari and Tree-age. Both have promise to be very good. They should be available this year, but will likely be expensive.
Give me a call if you would like a fact sheet which outlines these options, how and when to apply, and some evaluation of their effectiveness.
Back to the Table of
Contents
As I’m sure you are aware, Union County is now among the “positive” sites with the Emerald Ash Borer.
Although we have only identified it on one site, it had been there for
several years, based upon the damage to the tree. It is impossible
to determine how quickly it will spread from there, or whether there are
already other sites in the county. Although it is not practical to
treat woodlot trees, some of you may decide to treat several valuable trees
in your yard. Remember, if you make this decision, it is likely that
this will be an annual treatment and expense. There are several options if you make this decision. In fact, I would determine how much the annual treatment will be before you make the decision. There are several homeowner materials that you can apply. There are also several professionally applied insecticides that are good as well. Two new products have a 24C label for use in Ohio. They are Safari and Tree-age. Both have promise to be very good. They should be available this year, but will likely be expensive.
Give me a call if you would like a fact sheet which outlines these options, how and when to apply, and some evaluation of their effectiveness.
See
1,500 Blooming Roses
June 14!
See a thousand-plus heirloom roses in bloom — PLUS maybe buy a few, learn
how to prune them and walk a new rose-scented labyrinth — in Wooster on Saturday,
June 14. This would be any rose lovers paradise!
Ohio State University’s three-acre Garden of Roses of Legend and Romance at the Ohio Agricultural Research and Development Center (OARDC) will host a free open house that day from 9 a.m. to 2 p.m. The program will feature tours led by rose experts, a pruning demonstration at noon, labyrinth walks and the sale of a small number of roses, all of them propagated from plants there.
Established nearly 40 years ago, with most of the original plants still thriving, the garden features 500 varieties of old-fashioned roses, types that came before modern hybrid roses, with 1,500 specimens in all. They cover a site that’s nearly as big as three football fields. Colors include red, cream, copper, crimson, salmon, canary, burgundy and, yes, rose. “Unless you’re a rosarian from olden times, you’ll see roses here that you didn’t even know were roses,” said Kelly King, the OARDC plant materials specialist in charge of the garden. “They vary from 20 inches to 20 feet and everywhere in between. They’re hardy, smell especially intense and have survived the test of time.”
And June, especially the first two weeks, is when they hit their peak. “Many old roses flower only once, so timing is critical to see and smell them in their glory,” King said. “If you’ve never been here, this is the time to come.” The labyrinth, she added, is a living work of art. “It’s surrounded by live plants,” she said. “It represents life in its twists and turns. And labyrinths often are considered conduits for spiritual and physical healing.”
Not a maze, with no dead ends nor trick turns involved, users follow a single spiral walking path in the labyrinth. Bring a lunch and walk through Secrest Arboretum while at OARDC, too, King suggested. The 115-acre research collection, home to more than 2,000 different types of trees and shrubs, celebrates its centennial this year. For anyone who loves trees and shrubs, the Secrest Arboretum is a virtual treasure!
Find OARDC at 1680 Madison Ave., Wooster.
Back to the Table of Contents
June 14!
See a thousand-plus heirloom roses in bloom — PLUS maybe buy a few, learn
how to prune them and walk a new rose-scented labyrinth — in Wooster on Saturday,
June 14. This would be any rose lovers paradise!Ohio State University’s three-acre Garden of Roses of Legend and Romance at the Ohio Agricultural Research and Development Center (OARDC) will host a free open house that day from 9 a.m. to 2 p.m. The program will feature tours led by rose experts, a pruning demonstration at noon, labyrinth walks and the sale of a small number of roses, all of them propagated from plants there.
Established nearly 40 years ago, with most of the original plants still thriving, the garden features 500 varieties of old-fashioned roses, types that came before modern hybrid roses, with 1,500 specimens in all. They cover a site that’s nearly as big as three football fields. Colors include red, cream, copper, crimson, salmon, canary, burgundy and, yes, rose. “Unless you’re a rosarian from olden times, you’ll see roses here that you didn’t even know were roses,” said Kelly King, the OARDC plant materials specialist in charge of the garden. “They vary from 20 inches to 20 feet and everywhere in between. They’re hardy, smell especially intense and have survived the test of time.”
And June, especially the first two weeks, is when they hit their peak. “Many old roses flower only once, so timing is critical to see and smell them in their glory,” King said. “If you’ve never been here, this is the time to come.” The labyrinth, she added, is a living work of art. “It’s surrounded by live plants,” she said. “It represents life in its twists and turns. And labyrinths often are considered conduits for spiritual and physical healing.”
Not a maze, with no dead ends nor trick turns involved, users follow a single spiral walking path in the labyrinth. Bring a lunch and walk through Secrest Arboretum while at OARDC, too, King suggested. The 115-acre research collection, home to more than 2,000 different types of trees and shrubs, celebrates its centennial this year. For anyone who loves trees and shrubs, the Secrest Arboretum is a virtual treasure!
Find OARDC at 1680 Madison Ave., Wooster.
Back to the Table of Contents
Pond
Clinic
The June Pond Clinic will be held at
Carl and Bernice Smith’s at 21625 Shirk Rd. on Tuesday, June 3, 2008, beginning at 6:30 p.m.
So, if you missed the March Workshop, make plans to attend. Bring any pond vegetation samples that you need help in identifying. The workshop is sponsored by Ohio State University Extension and Union Soil and Water Conservation District.
Back to the Table of Contents
The June Pond Clinic will be held at Carl and Bernice Smith’s at 21625 Shirk Rd. on Tuesday, June 3, 2008, beginning at 6:30 p.m.
So, if you missed the March Workshop, make plans to attend. Bring any pond vegetation samples that you need help in identifying. The workshop is sponsored by Ohio State University Extension and Union Soil and Water Conservation District.
Back to the Table of Contents
OSU Extension Office - Union County
18000 State Route 4, Suite E
Marysville, OH 43040-8390
Phone:800/589-8584, 937/644-8117
Fax: 937/644-3062
Email:unio@cfaes.osu.edu
Ohio State University Extension embraces human
diversity and is committed to ensuring that all research and related
educational programs are available to clientele on a nondiscriminatory
basis without regard to race, color, religion, sex, age, national origin,
sexual orientation, gender identity or expression, disability, or
veteran status. This statement is in accordance with United
States Civil Rights Laws and the USDA.
Keith L. Smith, Ph.D., Associate Vice President for Agricultural Administration and Director, Ohio State University Extension TDD No. 800-589-8292 (Ohio only) or 614-292-1868
Keith L. Smith, Ph.D., Associate Vice President for Agricultural Administration and Director, Ohio State University Extension TDD No. 800-589-8292 (Ohio only) or 614-292-1868
If you have trouble accessing this page and need to
request an alternate format, contact Drudy Yoakam at yoakam.1@osu.edu.
Revised April, 2008