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Green news from the UC Division of Agriculture and Natural Resources
by jack
on August 2, 2012 at 3:54 AM
nice, awesome pic
by Kathy Keatley Garvey
on August 21, 2012 at 6:46 AM
by Ashley Ketchum
on January 23, 2013 at 11:39 AM
What would folks them recommend for controlling carpenter bees then? If pesticides and destroying bees' nest are not the way, how can a homeowner deal with a carpenter bee problem?
by Rachael Freeman Long
on January 23, 2013 at 2:21 PM
We are not into controlling or recommending controls for our western nesting carpenter bees, as their contribution to pollination far outweighs any damage to structures. Using untreated, unpainted redwood for arbors, fences and patio or lawn furniture in this area means learning to share with carpenter bees.  
However, the Eastern Carpenter Bee, Xylocopa virginica is perceived as a problem burrowing in wood structures. There is lots of information on the web about them and their control and eastern pest control companies have a lot of experience dealing with them..
by Jim Strickland
on April 14, 2015 at 12:23 PM
These bees do not like citrus oils and you can buy non toxic sprays made from fruits that will drive them away.
by Donald Hover
on May 3, 2015 at 4:05 PM
I am a Master Gardener in Tennessee and the carpenter bee is considered a destructive pest here. It is NOT a pollinator. the Bumble bee and Honey bees are the pollinators. and with the use of GMO's and pesticides along with the mite problem the Honey bee is loosing population very fast. Look out on the price of fruits if the honey bee population dies out People should look for organic solutions to pest and disease control.
by Rick Stelring
on May 11, 2015 at 3:24 AM  
Seems pretty straightforward to me - I'm keeping them. I might even name them. People pay for bees to be brought to their property for pollination.
by Brian Wood
on May 11, 2015 at 2:25 PM
Xylocopa virginica is a pollinator. What are you talking about Donald H. ? All you have to do is watch them to find that out, not to mention a quick google search. Good job there Master Gardener! I have thousands of them on my property. I wonder what all that work is they're doing on my flowers.....
by Teresa
on May 19, 2015 at 8:34 AM
Thank you for the informative article. I'm in the Santa Cruz mountains and my carpenter bees bore into my fascia which is PAINTED AND TREATED. I have TONS of holes as a result of these pollinators so I am torn. I've tried having the holes plugged to no avail. These bees are persistent. Until I just read this article I wanted them gone. Now I'm thinking I'll just ignore the damage. But to say they are not destructive is not true. I'm all for the need to keep the pollinators around......
by Jeni Bryan
on May 27, 2015 at 5:39 PM
I agree with the previous comment. I just spent a lot of money and hard work restoring my patio roof and wood bees are drilling into it like crazy. I hate to kill any creature unnecessarily, but there is a GREAT deal of bee feces all over my brand new patio table and chairs constantly, and the bees literally throw wood shavings on me and my guests as we try to sit outside. One night a half a wood bee fell down my blouse! Im all for relocating them, but I don't think its a feasible option for us to live together.
by Kristen
on April 17, 2016 at 8:18 PM
Yeah, I don't see myself allowing my deck to cave in for some pollination. I love insects, including bees, but I find it laughable that anyone would say your house is less important that flowers.
by jess
on March 29, 2017 at 4:35 AM
How can anyone insist they're not pollinators? Aside from multiple sources from experts saying they are, they have legs that are harrier than mine and are obviously pollen carriers.  
The damage will also depend on where you live. The ones in the article are less of a problem than the eastern version which is currently poking holes in my deck.
by Lynds tut
on April 15, 2017 at 1:34 PM
I have these bees around my porch and love watching them as i sit outside. I noticed the female going into her tunnel and, when she stopped before climbing in, i saw what looked like a second set of wings that were yellow. Im assuming its pollen but cant find anything online about how she carrys the pollen.. Is it under the wing? Why are they yellow? Its peeked my intrest but no answeres found :( thanks!
by Anna Nimus
on April 16, 2017 at 8:14 PM
Um Kristen, where did the article say "your house is less important that flowers"?  
Did you read a word of it? Do you seriously think pollination creates flowers? Did you show up to any of your high school science classes?  
Flowers exist to attract pollinators. Pollinators (bees/bats/birds) enable reproduction and the creation of fruits/nuts/seeds. These are things that people and animals eat. This is important because people and animals need to eat to survive. (In fact, while we can NOT survive without food, we CAN survive without houses.)  
So we can kill off all the pollinators and cut off our food supply and all die of malnutrition, but your house will still be there without you. Good job.  
Go back to the beginning and read the article over again before you say something publicly and embarrass yourself (again).
by Katharina Ullmann
on April 21, 2017 at 9:54 AM
Interesting observation Lynds tut! Female carpenter bees (genus Xylocopa) carry their pollen on their hind legs using dense, branched hairs called scopa. The pollen is packed on dry. They can also transport pollen internally in their crop according to Robbin Thorp (UCD Professor Emeritus and expert on all things bee related). Like all bees, they have four wings but I've never seen a case where the wings are yellow. Instead, wings tend to be translucent with a brownish tint. That all being said, depending on the flower they are visiting, carpenter bees can get dusted with pollen (see top photo of this article). This dusting can make the bee's color markings look very different from what they are!
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