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Comments:
by Gabriele A O'Neill
on August 1, 2013 at 4:03 PM
These bugs have been a regular occurence in Lake County and we've been aware of them for many years now, especially since we had somewhat of an "infestation" about three years ago, where a few could be found on every square foot of ground you looked at. During that year they did significant damage to our fruit (blackberries, soft figs, etc.)and could even be found inside heads of lettuce!  
I have seen them mistakenly referred to as boxelder bugs even on the IPM website, but didn't bother poiting it out, since, like you said, they are closely related and the management is the same.  
I found that the key to reducing their numbers is to kill the first ones that you notice emerging in early spring, as they are the mothers (or fathers...) of the thousands that follow otherwise.
by Bruce Hagen
on August 1, 2013 at 7:19 PM
They have been quite numerous in Somoma County for the last five years or so. They seem to be everywhere in ornamental landscaping. I haven't noticed any real damage.
by CRinCA
on September 2, 2013 at 4:08 PM
I disagree that these most likely don't cause harm. A large infestation in my garden has nearly whipped out my late harvest. The bugs are harvesting aphids, much like ants do, eating the honeydew the aphids produce. I have had to remove my cucumbers and squash because they were so covered with aphids and several stages of bordered plant bugs that the plants were dying. I will work hard this fall/winter/spring to get rid of them.
by Rebecca Miller-Cripps
on September 3, 2013 at 2:42 PM
Hi CRinCA,  
I wonder if you have squash bugs, not bordered plant bugs. The squash bug, Anasa tristis, is a common pest of all cucurbit crops, especially squash and pumpkins. They also have orange edging around their abdomens and they feed on cucurbit leaves. Young squash bugs look very aphid-like. Go to http://www.ipm.ucdavis.edu/PMG/PESTNOTES/pn74144.html for more information.  
 
Rebecca miller-Cripps
by victor
on June 24, 2015 at 12:54 PM
I first noticed a few on my newly planted pineapple plant and I killed them. About a week later I noticed several more, after looking up, I realized I hadn't killed the parents for they were all of the same 'age' so to speak. I killed dozens and for a few days it was good. But they are back in large numbers again. I find about a dozen dead by my door, around eight by open windows, and even more in my young pineapple plant. I don't know where they are coming from.
by Jim Dowling
on July 4, 2015 at 10:42 AM
This is the second consequtive year these bordered plant bugs have been 'thick' around here. They're everywhere - all stages from larvae to adults. They decimated the tomato crop last year. This year I'm dusting the plants around the base with diatomaceous earth. So far, does seem to be helping.
by Janette
on July 31, 2015 at 7:52 AM
Found these first on my Lavender plant in June and they have since moved on to my cosmos. (Not in my veg garden yet.) This is the first time I have seen the nymphs, although the adults (pictured here) look familiar. There doesn't appear to be any damage to my plants so far; so I'm going to leave them alone this year and see what happens.
by Steve N. Ehrmann*
on January 26, 2016 at 9:16 PM
I have the Border Plant Bugs on my Nectaplum, and they effectively destroy most of this otherwise delicious fruit early on. I am wondering if tanglefoot on the trunk could keep them out of the canopy, but they seem to have wings (??). They are on peaches and raspberries as well, but don't seem to do as much damage. I also have the squash bugs on my Sweetmeat Squash. First a few adults are evident, and then thousands of the offspring ! Using a shop vacuum sounds like an effective method of capturing them when I am present. But by then it is probably too late !!
by Scott Oneto
on February 2, 2016 at 12:23 PM
I have heard of fruit injury being a problem with the bordered plant bug, however it does appear to be sporadic and usually is just a problem when large numbers exist. I am not sure if tangle foot would give much control since adults will often fly into the canopy to lay eggs.  
 
Lygus bugs, stink bugs, boxelder bugs and bordered plant bugs all use plant hosts in addition to fruit trees for feeding, reproduction, and overwintering. Most potential problems can be reduced by appropriately managing or removing the  
alternate hosts. These bugs feed primarily on broadleaf weeds in the orchard ground cover, on borders, or in nearby crop fields, especially alfalfa. To keep populations from building up in the orchard, it is best to plant a ground cover that will discourage encroaching weed hosts. Perennial grasses or other herbaceous cover crops that do not harbor plant bug pests are recommended. Proper ground cover management is especially critical in peach and nectarine orchards where cat-facing injury can be severe. Dry vegetation, mowing, herbicide treatment, and cultivation can all cause bugs in the ground cover to move into trees in search of alternate food. Avoid mowing, cultivation, and herbicide application during periods when bug  
populations are high and fruit is most susceptible to injury, such as during bloom, when fruit is young, and near fruit  
maturity. Remove weed hosts on orchard borders where possible and avoid planting alfalfa next to orchards.  
 
Such measures will help reduce the number of adults migrating into orchards during spring and summer. For orchards that suffer annual boxelder bug damage, removing host trees, such as female boxelder, maple, and ash, from the surrounding area can help reduce boxelder bug populations. However, this is often impractical for orchards that are adjacent to uncultivated areas with abundant boxelder stands, or near urban areas where host trees are in the landscape.
by Alan Lowry
on March 2, 2016 at 11:34 AM
Placerville Calif, I found that the bordered plant bugs showed up on the 29th of feb, 2016, I found about ten of them on my driveway. They seemed to cover a six foot square. The trees they seem to come from is a fruitless mulberry. they most be mom's and daddy's. should I worry about the tree's life.
by Scott Oneto
on March 7, 2016 at 9:41 AM
Hi Alan, you are right, these are probably adults and will likely reproduce soon. This time of the year it is very common to see these insects running around on the ground, especially concrete. These insects rarely cause significant damage to landscape trees, however if you want to try and keep numbers low, it is best to control them now. Removal is easy by knocking insects into a mason jar, vacuuming them up using a shop vac, or stepping on them. No chemical control is recommended.
by Nancy Myers
on April 12, 2016 at 4:13 AM
I live in Central Texas. We found a large number of infant Bordered Plant Bugs on our mailbox. The black bugs, with red dot on back, didn't seem to be feeding on our flowers so we left them alone. Should we spray to get rid of them?
by Scott Oneto
on April 18, 2016 at 3:18 PM
Hi Nancy, no need to spray. If you want you can knock them into a jar and dispose of them. Normally they cause minimal or minor damage to most plants. For specific questions you might want to try your local Texas Master Gardener program http://mastergardener.tamu.edu/
by Steve
on May 25, 2016 at 2:56 PM
Have had them on my property in the Santa Cruz Mountains of California (sand hills type soil) for decades. Have seen the neon blue nymphs several times but never associated them with the ubiquitous adults until reading this. Funny thing is, contrary to others' comments, I only see them on the ground; never on the plants. I've seen absolutely no damage to plants, flowers, vegetables or fruit crops. Absolutely harmless here. And yes, they typically appear in Spring and are gone by mid-to-late summer.
by renata
on June 6, 2016 at 4:15 PM
I am fighting them by holding a bucket with water and shaking the clusters off of my plants the best i can and I just smash them with my fingers anywhere I see them. They are everywhere. Even though so far haven't notice major damage in plants, I can tell that it can get out of control really quick.
by Scott Oneto
on June 13, 2016 at 11:21 AM
Yes, shaking the insects into a bucket of soapy water is a great method! I also like the finger smashing technique. Thank you for sharing.
by Bonnie
on November 4, 2016 at 11:57 AM
I read somewhere that these can get into your house and destroy things made from cotton. Is this true? I am a seamstress, and I have a lot, and I mean A LOT, of cotton fabric. Thank you!
by Scott Oneto
on November 7, 2016 at 9:02 AM
Hi Bonnie, I am not aware of these insects causing any damage to cotton or other fabrics in the home. These insects have sucking mouth parts and feed on green plant tissues and fruits. They don't cause any chewing damage. They can occasionally be found in the home (along window sills, doors or other openings) but will usually die as there isn't sufficient food for them.
by Bug Expert
on April 20, 2017 at 12:04 PM
The bordered plant bugs don't usually cause problems with plants; however, they can be a nuisance. In most cases, there is no need for control of these bugs, since they don't cause significant harm to ornamental plants.
by Karen Holleran
on July 26, 2017 at 12:44 PM
I first saw these last season on my buckwheat plants, then more and more and they seem to like the milkweed too, and I'm wondering if they are eating the monarch larvae? I see eggs, then small caterpillars, then a week later, gone. could they be doing what the "milkweed bug" does too?  
I made the mistake of tolerating them, and now they seem to be ubiquitous in the yard, everywhere, just everywhere. Time to corral them little critters, as much as I hate to.
by Thyrell
on August 2, 2017 at 4:48 PM
I have these things so bad they are starying to infest my house! How can i get rid of the any ideas?
by Scott Oneto
on August 9, 2017 at 2:51 PM
They can be a nuisance when they get indoors. Although they often don't have a food source inside the home (as they feed on plants), they still can be a pest. Check for any holes in screens and make sure doors seal tight. You can remove these insects with a vacuum cleaner or hand pick into a jar. No chemical treatments are needed indoors.
by Nan Danford
on September 8, 2017 at 9:46 PM
These bugs are decimating our tomatoes and strawberries. They are sucking all od the jiuce out of them. I am relieved to hear that they are not laying eggs under the skin if the fruit. I wish I could post a picture.
by Scott Oneto
on September 15, 2017 at 4:44 PM
Many people have reported large populations this year. If they are on the fruit, one of the best methods I have found to remove them, it to walk through the garden with a tall jar. Just put the jar below the fruit and knock the insects off into the jar. Another option is to use a handheld, cordless vacuum.
 
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