21,402 Garden Web Discussions | Roses

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kittymoonbeam

Jim I love it when you put that up! Thais picture always makes me smile.

    Bookmark   October 19, 2013 at 10:28AM
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jim1961 Zone 6a Central Pa.

    Bookmark   October 19, 2013 at 9:06AM
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andreark

Thanks Michael...Have a great weekend.

andrea

    Bookmark   October 18, 2013 at 3:22PM
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dove_song(WA State Z6b)

Hmm. I have sandy soil so thanks for the "dig in 10-15% plain cat litter" tip, Michael.

    Bookmark   October 18, 2013 at 11:38PM
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subk3

A Knock Out isn't a rose I'd give "infant slack" time too! They are bred to be high performing right out of the box and if they aren't I can't imagine it would be any reason other than it doesn't like the spot it's planted in or it is a "lemon" specimen. Both reason would have mine gone and/or moved pretty quickly. (Says the woman who yanked one out last week!)

I totally get being patient with a something not bred to be so vigerous, but KO's are not a "1st year sleep, 2nd year creep, 3rd year leap" kind of variety!

    Bookmark   October 18, 2013 at 2:27PM
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anntn6b(z6b TN)

Re shade: back when the Chihuly exhibit was at the Atlanta Botanical Garden, some of us got together to see the roses and his glass. In back of my favourite pond with some very subtle glass colors, Jody and I saw a rose blooming not in the rose garden. So, of course, we had to go see.

The rose was taller than either of us (not that hard for most roses) and wasn't heavily leaved out, but it was blooming self supported in dappled sunlight. J sought out the label at the bottom and it was Knock Out. It didn't look like all the other KOs we had seen, but was adapting well to good soil, dappled sunlight and benign neglect.

    Bookmark   October 18, 2013 at 3:19PM
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gr8heather(6b)

Hmm. Glad to hear that it hasn't reverted to something else. These are new basals, and I didn't want to have to cut them off. It's been getting plenty of water from a drip hose until about a week ago when it started freezing. So it's not too hot, although I may have let it dry out recently.

    Bookmark   October 17, 2013 at 8:36PM
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hoovb zone 9 sunset 23

A weather thing, not to worry. This will become less likely as the rose becomes more and more established.

    Bookmark   October 18, 2013 at 2:24PM
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anntn6b(z6b TN)

Henry,
Do a scientific search for the papers by Kaminska et al. who have written very, very much about the phytoplasmas in Europe and be sure to see the paper about rose disease in a greenhouse in Poland . Of the Kaminska papers I was able to download, all found phytoplasmas and none reported finding any viruses.

There are also two papers about some sick roses in a bed in China that the authors tied to Pawlonia phytoplasma in a tree adjacent to the infected rose garden.

Ann

    Bookmark   October 17, 2013 at 10:36PM
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henry_kuska

Ann I am familar with the rose phytoplasmas litererature including the Chinese (and including the 2010 U.S. paper which I posted in this forum).

http://forums2.gardenweb.com/forums/load/roses/msg0421561629709.html

I started the present thread for information purposes. Someone is still claiming that rose rosette virus is not a virus but a phytoplasma.

Here is a link that might be useful: link to earlier thread that reported that RRD was a phytoplasma.

    Bookmark   October 17, 2013 at 11:56PM
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Maryl zone 7a

We have both Katydids and Grasshoppers. Some years worse then others. For me Grasshoppers are far worse then Katydids, but then our Grasshoppers can get very big and have an enormous appetite. Mostly what I see Katydids doing is sitting on a rose. Mostly what I see Grasshoppers doing is eating a rose. I leave Katydids alone just because they don't do much damage that I can tell.....Maryl

    Bookmark   October 17, 2013 at 8:47PM
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jim1961 Zone 6a Central Pa.

Gee I thought Katydids was just another name for grasshoppers...

I have no doubt this Katydid ate some of the rose bloom.
But I see no other damage anywhere else.
So far they have not been much of a problem here either.
Hope it stays that way...lol

This post was edited by jim1961 on Thu, Oct 17, 13 at 22:11

    Bookmark   October 17, 2013 at 9:56PM
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henryinct

I never encountered mildew until we moved to Pasadena and then I discovered that it is the biggest problem here. I thought it would go away after June but it didn't and some roses that were particularly susceptible were literally shriveling up they had it so bad. So I decided to spray with potassium bicarbonate and it does work. It wont help destroyed growth but new growth will be protected. As far as I can tell it is organic and hasn't hurt any bees or other insects. The product is GreenCure fungicide and it is available widely but it is expensive.

    Bookmark   October 17, 2013 at 5:07PM
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jerijen(Zone 10)

Some roses are like that -- at some times of the year, they get a touch of mildew. No biggie.

Some roses have NO resistance, and mildew at the drop of a hat. And the problem is far worse in some areas than in others.

Actually, if you are (like Henry) in an area with fairly high mildew pressure, you have two basic choices . . .

1. Spray regularly.

2. Keep roses that don't mildew.

Our option is 2.
Why mess with roses that frustrate you? Prune 'em with a shovel, and discover a rose that doesn't have that problem.

Jeri

    Bookmark   October 17, 2013 at 8:58PM
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farmerduck

Take a look at this thead on best white landscape roses:

http://forums2.gardenweb.com/forums/load/roses/msg0510051230536.html

For taller Perennial plants, try Lavender Provence or Grosso. They are almost evergreen in my zone 6b climate. I also grow 8 other varieties, but these two are the tallest . For most of these varities, I get a decent second flush (going on now) if I cut the flowers early enough in the season, but not so much for these two.

    Bookmark   October 17, 2013 at 3:15PM
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jim1961 Zone 6a Central Pa.

There is "white out" which is not a knockout rose but is bred by the same person Bill Radler...

Sunny Knockout starts out yellow but quickly fades to white...

Here is a link that might be useful: White Out Rose

    Bookmark   October 17, 2013 at 4:37PM
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poorbutroserich(Nashville 7a)

Andrea, go over to the rose gallery. I will post more tomorrow.

    Bookmark   October 16, 2013 at 5:25PM
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andreark

poorbutroserich,

I accidently clicked on your 'My Page' link. If you will click on my 'My Page', I think you'll see something weird.
Not only same Bday, but we joined this forum 4 days apart. Not incredibly weird, just a little.

andrea

    Bookmark   October 16, 2013 at 6:44PM
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t_bred(5)

Picked up 12 roses from Steve & his kind wife Kim today. Had a hard time choosing, my wonderful husband who came along for transport kept me focused! Thanks Steve and Kim, made for a great birthday for me today!

Strawberry, would have been neat to see another Gardenwebber there!

    Bookmark   October 20, 2012 at 7:49PM
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clemmielover(5)

Oh I'm just dying right now, like I can't complete the list suffering.
I would have loved to just have seen the collection but this is the story of my life, always the last to know.

    Bookmark   October 16, 2013 at 7:21AM
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jim1961 Zone 6a Central Pa.

Great to hear! :-)

    Bookmark   October 15, 2013 at 10:36AM
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roseseek

Congratulations! Kim

    Bookmark   October 16, 2013 at 3:54AM
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susan4952(5)

Totally cute

    Bookmark   October 15, 2013 at 9:36PM
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kittymoonbeam

Lucky frog. That looks like a soft place to rest.

    Bookmark   October 16, 2013 at 2:10AM
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michaelg(7a NC Mts)

No, rose slugs aren't actually slugs (slimy molluscs): they are sawfly larvae, green worms.

    Bookmark   October 13, 2013 at 3:28PM
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meredith_e Z7b, Piedmont of NC, 1000' elevation

I have a bunch of rose slugs this time of year. I'm hoping the birds notice them. I may do a bit of spinosad on some roses that are crazy with them to bump down the population a notch, but I may wait till the spring hatch since frost is coming.

Jim, that's an awesome picture! I saw a wasp carry away a curled rose slug. He just flew off with it (I didn't notice him before he was flying, so I didn't see a sting). Pretty cool :)

    Bookmark   October 16, 2013 at 1:15AM
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michaelg(7a NC Mts)

Back in the day, breeders would name roses after noble persons (with permission) in order to attach some of that person's social prestige to the rose. But wealthy non-noble persons would pay breeders to name roses after themselves, perhaps as a way of competing for prestige. Several of the most famous OGR are named after banker's wives.

I like the Austin names where he uses a phrase from a literary text with the character's name: Pretty Jessica, Admired Miranda. But one of those has an unfortunate context: "Young Lycidas is dead, dead ere his prime."

    Bookmark   October 15, 2013 at 3:40PM
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nanadollZ7 SWIdaho(Zone 7 Boise SW Idaho)

Yes, Young Lycidas, Milton's elegy on a dead youth. I'd forgotten about my Milton studies in college until this rose popped up. I just hope my Young Lycidas doesn't die in his youth. What an odd name for a rose. Diane

    Bookmark   October 15, 2013 at 8:53PM
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michaelg(7a NC Mts)

If there is a sewage smell to the rotting roots and the soil, this is anaerobic decay caused by poor drainage and overwatering. Manure and rotting wood do not smell like sewage if oxygen is present. So the prime question would be whether that nasty sour smell is present below the soil surface.

Ordinary canker does not normally, if ever, spread wildly through the stems and roots. Roses are able to defend themselves against canker and wall it off. (A partial exception might occur during winter dormancy when mild, wet weather allows the fungus to be more active than the plant's immune system.)

It is possible that your roses have something like phytopthera, but I would look first at the soil conditions. 50% manure is way too much. The muck would fill all the spaces between the sand grains and, if regularly watered, remain saturated with water. That much manure might also create a toxic excess of salts, and particularly if you have been fertilizing.

Use either a standard American potting mix such as Miracle Gro, or a light sandy loam containing about 80% large particles (sand or other gritty material, bark fines, coir). There is good advice on the Container Forum.

    Bookmark   October 15, 2013 at 12:18PM
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henryinct

Since coming to southern California I've seen a lot of dead roses. Most of my neighbor's roses look this way. I would attribute it to lack of proper care. The soil here can be totally dry and rock hard. Most people don't mulch or water correctly. Aerial watering runs off or if it is trapped it just sits there because there is no drainage and the rose can rot. You really have to build up the soil and get proper drainage and once you do you have to feed and water heavily especially when it stays hot and dry for long periods. And BTW, old woody canes with no basals are common here. It is a matter of time before roses like this die.

    Bookmark   October 15, 2013 at 8:31PM
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