How to treat roses to prevent cane borers?
cjrosaphile
13 years ago
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zack_lau z6 CT ARS Consulting Rosarian
13 years agojim1961 / Central Pennsylvania / Zone 6
13 years agoRelated Discussions
when to begain sealing canes to deter cane borers
Comments (8)It all depends on what cane borers are a problem where you garden. A well respected rose grower out in California doesn't bother with sealing because his borer's only go down half an inch. In my garden, I've followed a different kind of borer down eight inches. This can be a bad thing on a HT, but tolerable on some Old Garden Roses. What I found was that my borers go into freshly cut pith. When I would prune in late January, the pith would be too tough for the borers who would come out (presumably) in late April. Later pruning in late March would lead to problems. This is one of those times when keeping a garden calender (not a every day of the year, but a multi-year) so you could check when you pruned those Knockouts last year. That would give you more of a feel for when the borers could find success, and when you could interrupt them....See MoreIs this cane borer or something else?
Comments (4)Campv, Roseseek on the antique rose forum told me this is "Flat Head Apple Borer" damage. Search "Triple Threat" in the question box on that forum and you will see my question and his solution. I don't know how to link you....See MoreHow to treat & prevent Anthracnose in Blackberry & Raspberry
Comments (0)As I was pruning and thinning out my blackberries the last few weeks, I noticed a lot of splotchy canes, various sized spots with some peeling bark and generally unhealthy looking appearance. I sent some samples into our plant path diagnostic lab and unfortunately they determined my canes are infected with anthracnose. Most of my plants had some signs of the disease, so based on their recommendations, I removed all of the floricanes. I was advised to clean all old cane debris from the area and use Abound (Azoxystrobin) to prevent or control any future infection on new primocanes this year. If the plants were still dormant (which they aren't) and I could find lime sulfur, (which I could not) it was also recommended to use that. I could really appreciate advice from any of you who have successfully dealt with anthracnose, how you handled it, what you used, etc. What strategies should I use to prevent it from reoccurring on the blackberry primocanes that are starting to come up now? On top of dealing with it in the blackberry patch, I have about 40 new raspberry plants due to arrive in a few weeks, and their new raised beds are located very near some of the blackberry beds. How do I prevent it spreading to the new raspberry plants I will be planting soon? Abound is way to expensive for me to purchase at this point, (~$200/gal) but I was told other fungicides such as Captan probably wouldn't do the job. Any viable options? Thanks!!...See MoreWhat kind of cane borers rose do you think it is?
Comments (7)The problem is that there are many bees and wasps that will use canes as homes for their babies. Plus there are other insects as well i.e. raspberry cane borers and others. It is not that bad for me since my winters tend to kill the canes anyway. There are more than 500 species of carpenter bees. So more than likely mine guys would not be the same as yours. In most cases the bee does not enter the canes as far as I know. It drills into the cane places a lump of food for the kids. Then deposits her eggs and seals the hole up. They love to use my phlox. At the beginning of October which is early for many. I cut them back then have to cut diagonally into cane till I find the bores. These are mostly the white wormlike ones. It is a pain for sure but it has to be killed or there will be even more of them. If I wait to long these types will enter the crown and eat all winter. My point is it would be all most impossible for us to find your culprit and you won't find the actual bee etc. in the cane. I have found them before by watching mommy bee continuing to return to the same plant. So I got up by the plant sat down on the ground and watched her work. That was interesting....See MoreZyperiris
13 years agoronda_in_carolina
13 years agokentstar
13 years agoeveryrose
13 years agoreg_pnw7
13 years agocjrosaphile
8 years agolast modified: 8 years agocountrygirlsc, Upstate SC
8 years agorugose
8 years agomichaelg
8 years ago
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