Posted by Bert Hyman on August 8, 2011, 3:59 pm
We have a couple of shrub roses, ostensibly "Pink Grootendorst," which
manage to produce blossoms ranging in color from almost white to deep
red.
We find the beetles in the light-colored flowers all the time, and
they've pretty much destroyed any that have already blossomed, while
they leave the dark-colored flowers completely alone.
--
Bert Hyman St. Paul, MN bert@iphouse.com
Posted by David Hare-Scott on August 8, 2011, 5:57 pm
Bert Hyman wrote:
> We have a couple of shrub roses, ostensibly "Pink Grootendorst," which
> manage to produce blossoms ranging in color from almost white to deep
> red.
> We find the beetles in the light-colored flowers all the time, and
> they've pretty much destroyed any that have already blossomed, while
> they leave the dark-colored flowers completely alone.
What colour are the beetles? They may get better camouflage from predators
on some colours. Just a guess.
D
Posted by Bert Hyman on August 8, 2011, 7:32 pm
> Bert Hyman wrote:
>> We have a couple of shrub roses, ostensibly "Pink Grootendorst,"
>> which manage to produce blossoms ranging in color from almost white
>> to deep red.
>>
>> We find the beetles in the light-colored flowers all the time, and
>> they've pretty much destroyed any that have already blossomed, while
>> they leave the dark-colored flowers completely alone.
>
> What colour are the beetles? They may get better camouflage from
> predators on some colours. Just a guess.
No Japanese beetles where you live? Lucky guy.
http://www.arbordoctor.net/beetle_20-_20Japanese_20Beetle_20_Popillia_20japonica__20_MO_2006_.jpg
Metalic green & copper-colored body, about 0.5" long.
No natural predators in the US, although my wife goes after them with a
vengance.
They're relatively new to Minnesota and we inadvertently planted several
of their favorite plants when we upgraded our yard and garden about 10
years ago.
--
Bert Hyman St. Paul, MN bert@iphouse.com
Posted by Chris Thompson on August 8, 2011, 7:45 pm
>
>> Bert Hyman wrote:
>>> We have a couple of shrub roses, ostensibly "Pink Grootendorst,"
>>> which manage to produce blossoms ranging in color from almost white
>>> to deep red.
>>>
>>> We find the beetles in the light-colored flowers all the time, and
>>> they've pretty much destroyed any that have already blossomed, while
>>> they leave the dark-colored flowers completely alone.
>>
>> What colour are the beetles? They may get better camouflage from
>> predators on some colours. Just a guess.
>
> No Japanese beetles where you live? Lucky guy.
>
> http://www.arbordoctor.net/beetle_20-_20Japanese_20Beetle_20_Popillia_2
> 0japonica__20_MO_2006_.jpg
>
> Metalic green & copper-colored body, about 0.5" long.
>
> No natural predators in the US, although my wife goes after them with
> a vengance.
>
> They're relatively new to Minnesota and we inadvertently planted
> several of their favorite plants when we upgraded our yard and garden
> about 10 years ago.
>
We get very few here- I have seen a couple. While I know they are mainly
diurnal predators, I can't help but think the gazillions of dragonflies
around right now have something to do with it. I sat out on my deck
yesterday evening and saw at least three D-flies catch some kind of flying
critter. Wish I had a good camera!
Chris
Posted by frinjdwelr on August 11, 2011, 4:45 pm
>> Bert Hyman wrote:
>>> We have a couple of shrub roses, ostensibly "Pink Grootendorst,"
>>> which manage to produce blossoms ranging in color from almost white
>>> to deep red.
>>>
>>> We find the beetles in the light-colored flowers all the time, and
>>> they've pretty much destroyed any that have already blossomed, while
>>> they leave the dark-colored flowers completely alone.
>>
>> What colour are the beetles? They may get better camouflage from
>> predators on some colours. Just a guess.
> No Japanese beetles where you live? Lucky guy.
>
http://www.arbordoctor.net/beetle_20-_20Japanese_20Beetle_20_Popillia_20japonica__20_MO_2006_.jpg
> Metalic green & copper-colored body, about 0.5" long.
> No natural predators in the US, although my wife goes after them with a
> vengance.
> They're relatively new to Minnesota and we inadvertently planted several
> of their favorite plants when we upgraded our yard and garden about 10
> years ago.
> --
> Bert Hyman St. Paul, MN bert@iphouse.com
We get them now here in Wi. also, since global warming. I've killed 3200+
already this year.
I don't think you can out smart them by color or plant choice. A plant they
don't like one week/year, they go after mercilessly the next. They'll find
something they like no matter what you plant.
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> manage to produce blossoms ranging in color from almost white to deep
> red.
> We find the beetles in the light-colored flowers all the time, and
> they've pretty much destroyed any that have already blossomed, while
> they leave the dark-colored flowers completely alone.