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Wednesday, May 4, 2016

Beware of Black Walnut trees

Thursday, July 15, 2010

Many individuals around Clay and Owen counties have black walnut trees.

These trees are very beautiful with their compound leaves and nuts.

However, they can also be a very dangerous tree. Of course there is always danger associated with trees due to limbs falling and hurting someone or getting struck by lightning and causing a fire.

However, my reason for considering them dangerous is because of their impact on other plants and animals you might have.

Black Walnut trees produce a substance known as juglone. This substance is a chemical that can cause specific plants to die. Some of the plants which are impacted by this substance include Asparagus, Alfalfa, Apple, Azalea, Blackberry, Blueberry, Potato, Rhododendron, Silver Maple, Tomato and many others.

For a complete list, got to http://ohioline.osu.edu/hyg-fact/1000/11....

Any plant that is susceptible of being hurt by the juglone needs to be planted at least 50-60-feet away from the center of the trunk.

There is good news.

There are plants that are not sensitive to juglone. Some of these plants include Black Raspberry, Clematis, Japanese Maples, Melons, Morning Glory, Rose of Sharon, and Weeping Forsythia. More good news comes from the fact that you can compost walnut leaves.

With all that said, there is still some bad news about Black Walnut trees. If you are a horse owner, avoid using any bedding that might contain black walnut chips or sawdust since there have been numerous reports of horses getting laminitis after being in contact with black walnut bedding. As little as 10 percent of the total shavings, by weight, may result in clinical signs of toxicity in horses. These signs generally occur within 24-48 hours of exposure to the contaminated shavings.

Hopefully, no horses or any other livestock will be feeling the blues in the next few days as many animals in Clay and Owen counties will be at the fair.

The Clay County Fair runs from July 16-23. Monday evening, July 19, you should stop by the AMAX building and see me at the Extension Office Booth.

I'll be there to help answer any gardening questions you might have and to tell you more about some of the exciting things going on in the coming year with Purdue Extension. If you're interested in the Farm Bureau Flower Show, then stop by the fair July 20, at 1 p.m., and see all of the wonderful flowers on display.

Lastly, the Homemaker Afternoon at the fair is July 22, at 1 p.m. I'll be there to do a short presentation on flowers.

The Owen County Fair runs from July 17-24. The Health Fair will take place July 20, in the Open Class Building. The Public Speaking and Demonstration contest will take place at 1 p.m., in the Exhibit Hall July 21.

Then, on July 23, stop by the Open Class building from 4-8:30 p.m., to see the Gardening Help Booth.

Just like in Clay County, I will be there to help answer any gardening questions you might have and to tell you more about some of the exciting things going on in the coming year with Purdue Extension.

Also that night, starting at 6 p.m., is the 4-H Livestock Auction.

Fair time is an exciting time that can be enjoyed by all who take part in the activities. If you happen to see me at either of the two fairs, please don't hesitate to say hello as I am always excited to meet residents from the two counties and find out how Purdue Extension can help you.

As always, if you have any questions or would like information on any agriculture, horticulture or natural resource topic, please contact your local Purdue Extension Office at 448-9041 in Clay County, or 812-829-5020 in Owen County, or reach me directly at smith535@purdue.edu.

Purdue University is an equal opportunity/equal access/affirmative action institution.

Upcoming opportunities available to you through Purdue Extension include:

* July 16-23 -- Clay County Fair, Brazil,

* July 17-24 -- Owen County Fair, Spencer,

* July 20 -- High Tunnel Farm Tour at Harvest Moon Flower Farm, Spencer, 2 p.m. Call 812-349-2575 to register and to get directions,

* July 24 -- Butterfly Festival, McCormick's Creek State Park,

* Aug. 14 -- 10th Wild About Wildlife, McCormick's Creek State Park, and

* Aug. 16 -- Master Naturalist Course. Eight-week course on Monday nights from 6-8 p.m., in Spencer. Cost is $55. Call 812-829-5020 to register by Aug. 6. Limited space is available.