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Extension > Yard and Garden News > October 2013

Wednesday, October 30, 2013

Fruit flies common now

Jeffrey Hahn, Extension Entomologist



Jeff Hahn, University of Minnesota

Photo 1: Look for red eyes when identifying fruit flies, although the color dulls after they die.

Fruit flies are common problems during the fall. They are associated with a variety of fermenting, moist, relatively undisturbed organic material, such as overripe fruits and vegetables.

Most fruit flies have red eyes which help to identify them. They also have a brownish body and a dark colored abdomen. There are other small-sized flies, such as fungus gnats, moth flies, and humpbacked flies, that can be confused with fruit flies. The control varies with the type of fly that is found so it is very important to correctly the insect you are seeing.

The best control of fruit flies is to find the source of the infestation and remove it. This often takes detective work to locate the problem as many times it is not obvious. It is tempting to just spray or kill the adults that are seen. However, as long as a food sources remains, it is very difficult, if not impossible, to get ahead of the problem and eliminate all of the flies.

For more information, see Fruit Flies.

Wednesday, October 2, 2013

October 1st Issue of Yard and Garden News

In this issue:



The video Cicada Killer Wasps has been removed at the request of the presenter. I apologize for any inconvenience.

Impatiens Downy Mildew - Part I: The Disease

Impatiens Downy Mildew - Part II: Management

Plant Video Library 2014 cont.


the video on American Bittersweet has been removed for editing. I apologize for any inconvenience.

Pale Purple Coneflower

Trumpet Vine

Mexican Sunflower

Bugbane or Black Snakeroot

Nodding Wild Onion

Great Blue Lobelia

Flowering Spurge

Pachysandra procumbens

Revised videos from the last issue of Yard and Garden News

Tall Boneset revised

Jewelweed revised


Editors note:
Photos of flowers were added to the above videos posted in the September 15 issue of Y&G News. Thumbnail photos of the other videos have also been added to this issue.


Impatiens Downy Mildew - Part II: Management

In a followup to Part I on Impatiens Downy Mildew, Extension Educator Michelle Grabowski discusses management of the disease.


Michelle Grabowski

Photo 1: Sporangia of the pathogen Plasmopara obducens that causes impatiens downy mildew

Impatiens Downy Mildew Part II: Management

Impatiens Downy Mildew - Part I: The Disease



In this highly informative video, Extension Educator Michelle Grabowski explains the symptoms of this disease and how to identify it.






Michelle Grabowski


Photo 1: Early stages of the disease Impatiens Downy Mildew (Plasmopara obducens)











Michelle Grabowski


Photo 2: Sporangia of Plasmopara obducens found on the underside of the leaf of an impatiens plant carrying the disease Impatiens Downy Mildew







Impatiens Downy Mildew

Plant Video Library 2014 cont.

Karl Foord - Extension Educator, Horticulture
Click on the link to see the video with host Dr. Mary Meyer, Professor of Horticulture


Karl Foord

Photo 2: Purple Coneflower (Echinacea purpurea) on left and Pale Purple Coneflower (Echinacea pallida on right



Karl Foord

Photo 3: Trumpet Vine (Campsis radicans



Karl Foord

Photo 4: Mexican Sunflower (Tithonia rotundifolia



Karl Foord

Photo 5: Bugbane (Actaea racemosa



Karl Foord

Photo 6: Nodding Wild Onion (Allium cernuum



Karl Foord

Photo 7: Great Blue Lobelia (Lobelia siphilitica



Karl Foord

Photo 8: Flowering Spurge (Euphorbia corollata



Karl Foord

Photo 9: Allegheny Spurge (Pachysandra procumbens



Pale Purple Coneflower

Trumpet Vine

Mexican Sunflower

Bugbane or Black Snakeroot

Nodding Wild Onion

Great Blue Lobelia

Flowering Spurge

Pachysandra procumbens


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