Tag Archives: Japanese Beetles

More on Japanese Beetles

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It is early to discuss Japanese Beetles, the grubs are still lurking amid the grass roots in your lawn.  Here in South Denver we will be heading into our fourth season of the attacks.  They eat roses, grape leaves, linden, peach leaves, buckthorn, Virginia creeper, and raspberry bushes, to list our victims.  The beetles emerge with the hot weather and stick around until sometime in August.  Then the battle begins.

There are limited methods of control, but our grape arbor is doomed.  I conduct a summer long counterattack, using neem oil, soap spray, and physical removal.  I grab the little bastards and drown them in soapy water.  I am supposed to be practicing the Buddhist principle of not harming living beings, but watching the evil bugs struggling in the water is satisfying.

Last evening we went to a meeting organized by the Colorado State University Extension service on the scourge.  It was held in one of the old boathouses in Washington Park, now occupied by Outdoor Colorado.  There is a nice conference room which easily accommodates a couple of dozen people.  About 100 people showed up.  There were people sitting on the floor and standing along the walls.  Overflow went out the door.  It got hot and stuffy.

When the beetles first showed up, we went to CSU Extension, not far away.  Back then we mostly got unknowing shrugs.  Last season, the presenter said almost every call was about beetles.  They had to do some fast learning.  Another impetus for them was watching their flower garden be almost wiped out.

Our own research covered most of the information given in the meeting, there were a few new things and more information about what does not work.  For grapes and most of the vulnerable annuals, resistance is futile.  Grapes and Virginia Creepers are over.  Our linden tree gets lots of destroyed leaves, but it is robust enough to take the damage in stride.

Hand Held Vacuum

With the other stuff, it’s a fight.  Going around with a bowl and stick knocking them into the water is tedious, but works.  The best suggestion we got is to use a cordless dust buster.  Expanding on that, I will try the leaf gathering function on the leaf blower.  The collection bag might get nasty, but they say crushing the beetles doesn’t attract others.

The most important takeaway from the meeting is how many other people are just as angry and obsessed as I am.  I guess Japanese Beetles have become my teachers.  I get the chance to work on obsession, resentment, and hate.

Posted in Beetles, Buddhism, Gardening, Japanese Beetles, My Story, Obsession, Pestilence, Stories

Insects

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Japanese Beetle

Insects are part of life.  I mostly ignore them unless they are deer flies or horseflies.  I get swollen welts the size of a cupcake when they sneak up and get me.  Denver is pretty dry, so mosquitos aren’t much of a problem.  Bees and wasps won’t bother you if you don’t bother them.  Flies in the house are a nuisance but they are easy to control.   

Insects in the garden can be a problem, but they can be controlled as well.  There is one huge exception, however.  Japanese beetles are evil, vile, nasty creatures masterminded by Darth Vader, the Empire, and the Borg.  They eat, kill, and destroy.   

Four years ago Denver had no Japanese beetles.  Then, someone in one of the upscale neighborhoods brought in some plantings with beetle larvae in the soil.  They are rapidly spreading northward.  Two years we had a few, last year they were a plague.   

Damage

What do they do?  The beetles themselves eat leaves.  They love rose blossoms, but leave those leaves alone.  They like linden tree leaves, grape leaves, raspberry leaves, and peach tree leaves.  A rosebud opens in the morning and by noon the flower is gone.  They work on grape leaves to the extent that any new growth stops.  That is no good when you are trying to grow a grape arbor.  Lots of linden leaves get honeycombed, but the tree seems to be able to cope.  Our peach tree and the raspberries get attacked, but so far, not a lot of damage.   

In Palisade, over on the Western Slope, peaches and vineyards are the mainstay of the economy.  Unchecked, the beetles would have wiped them out, so they took the nuclear option.  They sprayed.  Spraying stopped the beetles, but it killed the beneficial insects as well.   

Japanese Beetle Grubs in a Lawn

The other part of the Japanese beetle life cycle is when the beetles fly down and lay their eggs in the lawn.  The eggs hatch, and the grubs start eating the grass roots.   Lots of eggs, lots of grubs.  They can be so dense as to form a living mat of grubs.  The lawn develops spreading dead spots.  Uncontrolled, no lawn. 

What to do?  In the morning go out and flick the beetles into soapy water.  Nematodes and milky  spore help with the grubs.  There is a grub poison called GrubEx, but it isn’t selective in what it poisons.   

Trap

A popular control is traps.  The kind where the beetles fly into the jug, attracted by some bait.  They drown, and give off a scent that attracts more beetles.  Soon, it is a beetle feeding frenzy with beetles coming from the entire neighborhood.  They look around for another snack and eat all your plants.  You can’t have the trap near your vulnerable plants, not easy on a small urban lot.  I think I will do it anyway, just to watch the evil creatures die. 

I don’t think we will have a grape arbor.  The linden, peach tree, and the raspberries will cope.  We will cut off all the rose buds in June and July.  We may have to eliminate what lawn we have left after years of reducing its size.  

My task is to give up on my beetle obsession.

 Japanese Beetle

Posted in Beetles, My Story, Obsession, Pain, Pestilence, Stories

Japanese Beetles

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We are being attacked.  When the weather gets hot, Japanese Beetles come out and eat roses, hollyhocks, buckthorn, linden trees, and grape leaves.  The poor roses hardly have a chance.  The new flowers are ragged by noon.  All that is left on some of the grape leaves are the veins.  The hollyhocks lose their flowers as well.   

Japanese Beetle

Japanese Beetle

It’s war!  They are relatively new arrivals here in our neighborhood.  They showed up last year and this year they are all over our plants.  The evil little beetles come out and eat during the hot weather, lay their eggs in the lawn, the grubs hatch and eat the grass roots.  Next spring, the grubs become beetles, and the horrible thing starts all over again.   

When they hit the peach and vineyard area around Palisade, the chemicals came out and the infestation was stopped.  They don’t talk about the harm done to beneficial insects.  We try to be organic, so the poisons are out.   

The first tactic we adopted is to go out with a small pitcher with some dish soap laden water, find the bugs, and flick the bugs into the water with a table knife.  It goes on all day.  The grape arbor is high, and I am banned from going up more than two steps on the ladder, so some escape.  I am not big on killing living beings, but here is an exception.

They are fairly round with an iridescent shell.  Ugly little beasts.  At the end of the day we have dozens floating in the water.  With a lot of research, mostly on University Extension Service websites, we discovered neem oil with a tiny amount of azadirachtin kills and repels the little beasts. 

As the grubs get active in the turf, we are going to introduce some nematodes that attack the grubs.  With luck, we won’t have those dead spots in the lawn.  The nematodes stay around, so one time for them.  

On my bug hunt one morning, I didn’t find one beetle.  The fortified neem oil is working.  After a couple of days they are back and it’s back to work. The neighbors won’t be killing the grubs, so we will have an annual battle.   

If you have Japanese Beetles, neem oil with azadirachtin works.  Straight neem oil works on lots of harmful insects, but not without some azadirachtin for our little buddies.  If you need neem oil and don’t have Japanese Beetles, we have a couple of bottles we will give you.  Good hunting!

Posted in Beetles, Gardening, My Story, Spring Flowers, Stories