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Video of Cicada Killer Wasp damaging golf green

August 6, 2021

On July 13, 2017, Dr. Donald Lewis of the Entomology Department put up a blog about Cicada Killer Wasps https://www.extension.iastate.edu/turfgrass/search/content/cicada%20kill... He also has an extension bulletin on this insect at https://hortnews.extension.iastate.edu/cicada-killer-wasp. 

This large wasp can sometimes be seen digging in golf greens looking for cicada larvae to sting and complete their life cycle.  They can do considerable damage.  Luckily, this is rare.

On August 2, 2021, Tom Meir, golf course superintendent at the Orchards golf course in Bellville, Ill. sent me this video of a Cicada Killer Wasp damaging one of his greens.  It shows the kind of damage that they can do to greens and other turf surfaces.

 

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CICADA KILLER WASP

July 13, 2017

For the Blog from Dr. Donald Lewis

The annual cicadas have been buzzing in the trees for the past week, and right on schedule, and right behind them, come the cicada killer wasps. 

Cicada killer wasps are 2-inches long with black and yellow marking and orange wings.  Their size makes them look and scary but they are not a threat to people and pets.  But still people want to kill them because of their size.

Cicada killers are a solitary wasp. There is no colony as there is with honey bees, bumble bees and yellowjackets.  Each female wasp works alone to dig a burrow and provision in with paralyzed cicadas that become the food source for her offspring.  Solitary wasps are not aggressive and they can be tolerated, though most people choose not to!

The wasps that are randomly flying back and forth over an area are the male wasps defending their territory.  Only female wasps and bees can sting.  The males are harmless and the females are too busy working to pay any attention to you.

Cicada killer wasp tunnels may be 12 to 24 inches deep in the ground. Burrows are usually in bare soil and at an edge.  The transitions between sand traps and turfgrass or between flower beds and turfgrass are favorite spots!  There is only one generation per year and populations vary greatly from place to place and from year to year.

When cicada killer wasps cannot be tolerated, control is usually accomplished by putting insecticide dust into the nest opening at night.  Liquid sprays applied to burrows do not work well because they soak into the soil.  Dusts or powdered insecticides work better.

Read more in our online article at   https://hortnews.extension.iastate.edu/cicada-killer-and-other-digger-wasps

Donald R. Lewis

Professor

Department of Entomology

Iowa State University

Ames IA 50011

www.ent.iastate.edu

 

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My Take on the "Dandelion King"

May 6, 2010

I urge you to read Marcus’ blog posting from Wednesday, April 28th. The post refers to an article from the NY Times and a person self dubbed the ‘Dandelion King.’ I find his statement that the war on weeds isn’t “winnable at a morally acceptable cost” is based on his opinion rather than any actual knowledge of turfgrasses or turfgrass management. See the complete article by clicking here.

I believe everyone in our industry should heed Marcus’ advice, “Equip yourself with this knowledge so you can provide an insightful answer next time you are challenged about the benefits of turfgrass.” The Wednesday April 28th blog article from Marcus contains excellent ‘equipment’ for that answer.

Again and again I observe the most ‘interesting’ writers getting their blather printed as fact because they are able to editorialize with word choices and interesting adjectives. For example, the so called ‘Dandelion King’ states; “I soon learned that the carpets of green in suburbia are the product of assiduously applied chemicals…” The word assiduous sounds very sinister here but the definition is benign:

I am certain the author meant ‘constant in application’ but the truth we know is that diligent is a better definition.

What the author obviously does not understand is that good management can lead to good turfgrass quality without an abundance of inputs. He just ‘doesn’t have time to figure this stuff out,’ so he has developed an ‘environmental excuse’ for his poor skills. Take a look at Marcus’ scientific response and help this author and others like him realize that there is nothing insidious about proper turfgrass management. It does take a little work and knowledge, but the environment will benefit from that knowledge and effort.

I won’t go on bashing this author about the other misrepresentations in his article, except to say that his ‘multiple’ applications of pre emergent are senseless and the subsequent post emergent applications he so despises have little to do with the success or failure of the preemerge. So it goes.

Suffice it to say the author has done just enough ‘Googling’ to be dangerously misinformed. Atrazine is a grass killer, let’s not lump it in as a ‘lawn chemical.’ Please.

Bottom line is simple, we either educate those that think like the ‘Dandelion King’ or we let the self proclaimed ‘environmentalists’ screw up things beyond belief.

Jeff Wendel
Executive Director
Iowa Turfgrass Institute

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