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Posted: Apr/22/2007 2:20 PM PST
Another one. Is this "chat room" stuff addictive? I had over 100 lilies in my yard. They have been the back bone of my garden in that difficult down time between early and mid summer. In the past four years, I have been invaded without mercy by those stupid red lily beetles. I have been trying to keep them off by hand, but it's impossible to keep up, and they coat themselves with their own fecal matter as larvae, so it's GROSS. Is there some other plant that blooms at that time? I hate pesticides enough to not want to douse my entire yard (the lillies are -were- in every bed) Have I mentioned that I hate those nasty, gluttonous beetles? |
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Posted: Apr/24/2007 3:25 AM PST
Those are new to me.... could you post a Pic? This isn't a Chat... tho we have been promised a return of our chat room...... And can a moderator please move this thread to its proper location? |
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Posted: Apr/24/2007 10:49 AM PST
Lilioceris lilii Hand picking is about the only thing that works. First infestation noticed in 1992 in NE USA. Attachments:  |
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Posted: Apr/24/2007 3:56 PM PST
Thank you for the info, treeman. I guess I have to hit the books for a good replacement for my lillies. They were an inch out of the ground Saturday, and I was picking off mating beetles like a mad woman. I know from experience that I couldn't have gotten all the eggs, and they reach egg laying age in about two weeks. I have been spectacularly ineffective in controlling them. I love the lillies- what a shame! |
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Posted: Apr/25/2007 3:13 AM PST
You have to give Told credit for the info.... I have to check the info and learn a little something myself. |
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Posted: Apr/25/2007 6:12 AM PST
I wonder if some grub-x or something like that would kill the larve. You could use something that's not as "friendly" unless it's a food crop or there's a water source nearby. Find something they like better than lilies and maybe that would work. |
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Posted: Apr/26/2007 12:10 AM PST
From a University of Rhode Island paper: Methods: We received approval from the USDA and State Departments of Agriculture to release Tetrastichus setifer in four New England states. L. lilii larvae parasitized by T. setifer were collected in Europe by CABI Bioscience, and were sent to the URI Quarantine Lab for emergence. Adult T. setifer were released from 1999-2006. We visited all release and control plots either weekly or biweekly during the summer, counting all life stages of L. lilii on 40 lily stems per plot (adults, eggs, and four larval instars). To detect parasitism by T. setifer we dissected approximately 20 fourth instar larvae collected during each visit, when they were present in the plot. We also received permits to release two additional parasitic wasps into New England study sites (Hymenoptera: Ichneumonidae) Diaparsis jucunda and Lemophagus errabundus. These sites were monitored in the same manner as the T. setifer release sites. Tetrastichus setifer has been permanently established in Wellesley, MA for five seasons, and the parasitism rate has remained high in most sites. In 2004 we noted a reduction in the number of lily leaf beetle larvae compared to 2003. This reduction in pest density was the result of three years of T. setifer parasitism. We have seen establishment of T. setifer in three other locations: Cumberland, RI, Bridgton, ME, and Hudson, NH. Parasitism of T. setifer has been detected five miles from the release site in Cumberland, RI. Lemophagus errabundus was detected in a lily garden approximately one mile from our Plainfield, MA release site in 2005, indicating that this parasitoid has established there. |
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Posted: May/21/2008 7:59 AM PST
The red lily beetle is a nightmare - once you get an infestation they are almost impossible to get rid of. I tried hand-picking them as soon as my Turk's cap lilies emeged in the spring, but despite diligent and repeated attempts to eliminate the adults before they could lay their nasty larvae on the leaves, I always found many more adults each day. Finally, the larvae appeared on the underside of the leaves so I was forced to give up and destroy all the lilies. That's right, I pulled 'em all. The infestation had been worsening since I first noticed a few holes on my lilies' leaves about 3 years ago. That first year, it was mild. It got worse each year with more destruction until last year there were almost no leaves left on the plant, and the blooms were ragged and ugly. The moral of the story is to try to stem the tide early, even if you only see a few of these critters and the destruction is mild. Don't transplant the lilies, or put the blooms into arrangements which will leave your property, as this is how they spread. I have heard that Neem works on the adults and the "first instar" larvae. Good luck. |
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Posted: May/21/2008 11:00 AM PST
I have only seen 2 so far - and they were mating. I squashed 'em both!! |
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Posted: Jun/16/2008 5:32 PM PST
IN MAINE, THOSE &%#@$%#+= BEETLES HAVE BEEN LAYING THEIR NASTY LITTLE EGGS UNDER THE LEAVES OF MY BEAUTIFUL WHITE ORIENTAL LILIES FOR A FEW WEEKS AND I THOUGHT I HAD BEEN DILIGENT IN SCRAPING THEM OFF AND KILLING THE MAMAS & PAPAS DAILY BUT TODAY, JUNE 16, I SPENT 50 MINUTES ON MY BACK LOOKING UP UNDER THE LEAVES OF THESE 4 FOOT READY TO BUD WHITE LILIES AT THE MOST DISGUSTING BLACK GUCK THINGS EATING THE LEAVES...THEY GROW OVERNIGHT, I SWEAR...I THINK I SAVED THEM BUT YUCKA, YUCKA, YUCKA...... |
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