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What is wrong with my Knockout rose bushes?
May 19, 2019, 12:26 PM
1lowlifeWhat is wrong with my Knockout rose bushes?
Can someone please tell me what my knockout roses bushes are doing and what to do about it?
I have 10 across the back fence of the yard.
Most of them are fine.
2 of them have strange wilted new growth on them.
1 of those the leaves are a little yellow.
Any input appreciated..
May 19, 2019, 12:46 PM
Mustang-PaPaI have not had this on mine but i was warned last year about this going around from john the local respected yard guy.
He said if i saw this on mine to get it removed asap as was no cure and would keep spreading to to other bushes.
Be sure to bag and dispose of the affected plants and dont compost the diseased plants.
Also post this on neal spearrys facebook page to get the skinny and latest on how to handle this.
I would also de leaf all the trunks on the bushes you leave that are healthy to promote better air flow in the bushes and to also stop the spreading of the disease.
Also mix up some bleach and water to dip you cutters into to keep from spreading the disease to the un infected plants.
May 19, 2019, 01:41 PM
1lowlifequote:
Originally posted by Mustang-PaPa:
I have not had this on mine but i was warned last year about this going around from john the local respected yard guy.
He said if i saw this on mine to get it removed asap as was no cure and would keep spreading to to other bushes.
Be sure to bag and dispose of the affected plants and dont compost the diseased plants.
Also post this on neal spearrys facebook page to get the skinny and latest on how to handle this.
I would also de leaf all the trunks on the bushes you leave that are healthy to promote better air flow in the bushes and to also stop the spreading of the disease.
Also mix up some bleach and water to dip you cutters into to keep from spreading the disease to the un infected plants.
Thank you PAPA..
I just went out, removed the affected stems, and trimmed out the clutter on the trunks..
I'll look into Sperry's FB page as well.
I used to listen to him on KRLD..
May 19, 2019, 01:52 PM
Mustang-PaPaHe is or was very fast to respond on fb.
It may have already been addressed so do a little reading on his pages.
May 19, 2019, 02:06 PM
OKCGeneRose Rosette Disease.
I’ve lost ~50 rose bushes from this.
There is no cure. Yet. Hopefully one can be found.
It will spread, infect and kill all the other roses.
Pull them out, place in big plastic trash bags, try not to spread the dirt or foliage.
And a good point as mentioned above, after trimming or cutting roses, clean and disinfect your pruners. A strong bleach water mix works well. Do this even on healthy roses.
Link Neil Sperry Link.
May 19, 2019, 04:16 PM
BigWhupquote:
Originally posted by OKCGene:
Rose Rosette Disease.
I’ve lost ~50 rose bushes from this.
There is no cure. Yet. Hopefully one can be found.
It will spread, infect and kill all the other roses.
Pull them out, place in big plastic trash bags, try not to spread the dirt or foliage.
And a good point as mentioned above, after trimming or cutting roses, clean and disinfect your pruners. A strong bleach water mix works well. Do this even on healthy roses.
Link Neil Sperry Link.
This is correct, it is caused by microscopic mites. Those growths are called "witches broom", but I have seen worse. I just dug up a Drift rose yesterday and I am hoping it doesn't get the rest of mine.
Word is that it is not spread by transmission from your pruners though.
No cure they say but I used multipurpose systemic on mine anyway since I had it on hand.
May 19, 2019, 04:48 PM
architectMy immediate thought was "overspray from a lawn service," but it certainly could be mites.
May 19, 2019, 05:14 PM
Georgeairquote:
Originally posted by BigWhup:
quote:
Originally posted by OKCGene:
Rose Rosette Disease.
I’ve lost ~50 rose bushes from this.
There is no cure. Yet. Hopefully one can be found.
It will spread, infect and kill all the other roses.
Pull them out, place in big plastic trash bags, try not to spread the dirt or foliage.
And a good point as mentioned above, after trimming or cutting roses, clean and disinfect your pruners. A strong bleach water mix works well. Do this even on healthy roses.
Link Neil Sperry Link.
This is correct, it is caused by microscopic mites. Those growths are called "witches broom", but I have seen worse. I just dug up a Drift rose yesterday and I am hoping it doesn't get the rest of mine.
Word is that it is not spread by transmission from your pruners though.
No cure they say but I used multipurpose systemic on mine anyway since I had it on hand.
Had this take out several / all of ours in McKinney. Nothing will save them unfortunately.
You only have integrity once. - imprezaguy02
May 19, 2019, 06:39 PM
barndg00Lost all our Knock Outs to this in the back yard over the past 2 years. I might have been able to slow it if I had recognized it earlier. It has even hit a couple of my Hybrid tea roses, though much less severe, may be able to save them, they are more resistant to it. Cut each stalk affected far back to the trunk, burn the trimmings. Once started though, unlikely to be able to save them...
May 19, 2019, 07:09 PM
cparktdUnless there has been a breakthrough in the last year or so the only thing you can do is start planning what you are going to grow in their place.
All mine were gone in about three years after the first symptoms appeared and I dillagently removed the diseased ones and sprayed insecticide at first to no avail. It persists even in the soil.
Endeavor to persevere. 
