Help with unusual problem for knockout rose
Cynthia Harrington
15 days ago
last modified: 15 days ago
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Cynthia Harrington
15 days agoCynthia Harrington
15 days agoRelated Discussions
help knockout rose is dying
Comments (11)It would help a great deal if we knew where you lived and what kind of weather conditions you've been experiencing. If the cane is still green where those leaves have dried up you do not need to cut the can off. The leaves will replace themselves once the problem is solved. If the canes themselves are turning brown or black then they need to be removed down to good green cane. Do examine the plant carefully to see if there are any insects on it or any damage to the canes. Dig below the surface and see what's going on down there. Is it bone dry or swampy? Either of those could cause die back. Hold the canes at the top and try and rock the plant back and forth. If it moves easily and freely there could indeed be something eating the roots. Come back with more info on what you find and maybe we can get more specific with our help....See MoreKnockout Rose Issue - Please Help!!
Comments (21)I know I'm not near any of you and this thread is older, but ALL of my roses are KO's... and my pink doubles have black spot on them. We just went through an F2 tornado here in Vilonia, Arkansas that destroyed the neighborhood. Our house, although very heavily damaged, is liveable and the KO's??? THEY MADE IT THROUGH with just their blooms blown off and some twisting! BUT... the TORRENTIAL rains from the tornado and sussequent flash flooding (of which NO flooding hit us) have really brought out the black spot. I simply prune lightly the branches affected and leave them alone and they will return to glory when the spring weather calms down. At least I know they can withstand 160 mph winds!...See Morehelp what is wrong with my knockout roses?
Comments (2)A few details of the history of the problem -- what happened, when -- and what you did to fix it, might have helped obtain a response or two....See MoreNeed help with my knockout roses
Comments (11)Hi Derek, I'm just north of Cullman...about midway between Birmingham & Huntsville. We've had the same extremely hot & dry June and extremely rainy July here. I don't think the weather extremes themselves should have hurt 3 year old KOs. Also would be surprised if a drainage issue is just now causing a problem since we've had lots of extremely rainy periods in the last 3 yrs...but there could be a new sinkhole, soil shift, etc, so worth checking the soil below to make sure. Very possibly could be something eating the roots as Michael suggested. My roses are currently being devoured by thousands of Japanese Beetles...started early June this year and still going strong...but you would notice the beetles on your bushes, and best I can tell from your pictures, that isn't JB damage. It could be leftover winter damage or canker damage from early spring. I had canker issues worse than I've ever experienced this spring and more winter damage to my roses than I can remember, too. I pruned most out early in the season, but did leave canes that had some damage, but looked like they might recover. Most of those are now dying since the heat set...weren't strong enough to handle it. You might not have noticed a canker spot low on a cane that otherwise looked healthy this spring, but that could now be cutting off energy to it....See MoreMoses, Pittsburgh, W. PA., zone 5/6, USA
14 days agolast modified: 14 days agorosecanadian
14 days agomad_gallica (z5 Eastern NY)
14 days agoCynthia Harrington
14 days ago
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