21,402 Garden Web Discussions | Roses

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michaelg(7a NC Mts)

I haven't grown it, but Renae has the reputation of being a good rose that is less winter hardy than most climbers. If you are in eastern zone 7, this year's unusually hard winter would have damaged the canes. Black canes are probably dead, others may be injured internally. By now you should have vigorous new shoots coming off every healthy cane and setting flower buds. Instead I think I'm seeing a lot of blind growth--shoots that stopped growing without making a flower bud. Look for any small flower buds at the tips. You can mark blind shoots because the top leaf has matured. On a growing shoot, the top leaves are small, crinkled, and a different color, or there is a flower bud.

Blind shoots occur because they were injured by an untimely freeze, or because the underlying cane was injured back in the dead of winter. The plant just needs to be pruned back. Roses can recover from being pruned all the way down, as I had to do this spring. Prune to healthy white center pith.

Red spots are probably cercospora or spot anthracnose (fungal diseases, but not a big deal).

Sorry to be so long-winded!

Best,
Michael

    Bookmark   May 19, 2014 at 3:48PM
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MzMolly65(7)

Thank you so much, I didn't see your response until today.

I'm in the Pacific NW and we are in such a funny location we are either zone 7 or 8b, depending on the direction of the wind, LOL!

We had a mild winter but I still did as you suggested and pruned the branches back. I also found a fertilizer/fungal treatment and dose it with that.

Thanks again for your advice.

    Bookmark   June 3, 2014 at 6:30PM
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michaelg(7a NC Mts)

I have not seen crown gall go systemic, but Ann may be right. Usually aerial galls are found at old pruning sites where the bacteria entered through wounds, but these are all along the stem. They are probably shedding bacteria onto the soil beneath.

The rose might carry on for a long time. I guess I would wait until the flush is over and prune out all the infected stems on my side, sterilizing the pruners after every cut with a bactericide. Maybe do this every year. There is a product called Galltroll, but I am not familiar with it.

    Bookmark   June 3, 2014 at 10:18AM
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sherry14226

Thanks to both of you for your replies, I am a novice gardener at best and not very knowledgeable. It's disheartening to hear but what I expected.

The rose has not bloomed yet (that picture is from a few years ago), which is typical based on my experience with it. It does have many buds tho that will probably burst within the next few weeks. So I should wait until its done blooming to prune?

I bought a brand new pair of shears. I will disinfect both the old and the new from now on, but the old will only be used on this bush just to be extra safe.

I'll let my neighbor know as well. I plan to prune back his growth, I know he won't mind. While I doubt he would ever remove the rose unless it were on its last legs, he has a significant bonsai collection and several other roses which I would hate to see suffer if he did not know to take precautions.

I did see something about the Galltroll, but I couldn't find much information about it, and whether I could even purchase it or that it would be helpful for an already infected rose - but I am going to try to look into it further.

Thanks again for all your help.

    Bookmark   June 3, 2014 at 4:53PM
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michaelg(7a NC Mts)

Dr. Huey is the most common rootstock variety. See link.

Nick, take a look at my post above to see if it is clear to you, and ask questions if it isn't. A grafted plant consists of two different varieties physically stuck together above and below. The rootstock can survive after the scion dies. Or sometimes the rootstock sends up shoots while the scion is still alive. These can crowd out the scion variety.

Here is a link that might be useful: Dr. Huey

    Bookmark   June 3, 2014 at 3:00PM
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jerijen(Zone 10)

No. Suckers are simply rootstock, and rootstock plants do bloom.

They just don't bloom like the rose you purchased. And MOST rootstocks bloom only once a year, spring-or-summer.

Dr. Huey is the most common U.S. rootstock, and it is, as noted, a dark burgundy-red once-blooming climber, which has fungal disease problems in most areas.

Although roses are not winter-killed here, I still prefer roses growing on their own roots. They cannot "sucker."

    Bookmark   June 3, 2014 at 3:05PM
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hoovb zone 9 sunset 23

Whoever maintains the plantings along the highways would be who to ask--someone in the highway department likely.

    Bookmark   June 3, 2014 at 9:10AM
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jerijen(Zone 10)

In Northern CA, many public landscapes have been planted with Shrub Roses. I think many of them are the Poulsen "Town & Country" Shrubs sold in the U.S. a few years back by Arena Rose Co.

Probably wouldn't work in SoCal, where there's just not enough water -- but in NoCal, they can be spectacular.

    Bookmark   June 3, 2014 at 12:06PM
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rosaholicme(9)

I have her too - in a pot - and I don't think she likes the confinement too much. That bloom looks very health

    Bookmark   June 3, 2014 at 11:34AM
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pat_bamaz7

I always enjoy your posts. Such perseverance in spite of your growing challenges! She looks lovely even with the deer keeping her pruned into a rose tree :)

    Bookmark   June 3, 2014 at 11:57AM
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michaelg(7a NC Mts)

Could be these are once-blooming roses that you are frustrating by pruning severely in the fall. Once-bloomers bloom in late spring on laterals produced by canes that have been through a winter. Most of them should not be pruned severely and never in the fall. (Actually rose people do not do ANY major pruning in the fall on any type of rose.)

If your roses used to be hybrid teas (florist-type) and have been neglected, the tops may have been killed by winter and the rootstock has taken over. The rootstock would be a dark red once-bloomer called 'Dr. Huey'. It has glossy dark foliage that is reddish when young. The canes grow out vigorously but do not set flower buds in their first season. They will bloom the following spring.

    Bookmark   June 3, 2014 at 10:04AM
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jacqueline9CA

Where are you? (approximately). Water is the most important thing, but what kind of rain do they get already? For example, where I live in CA in a normal year (which we haven't had for 3 years), it rains 40 inches, but only Nov thru Feb, with the other 8 months being totally dry. So, we irrigate our gardens for those 8 months (at least those of us who have roses).

Does it rain every week or month where you live? How much?

Also, how cold does it get in the winter? Snow? For how many months?

If you can give us just some basic info, someone on here will be able to give you good advice.

Jackie

    Bookmark   June 3, 2014 at 11:46AM
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susan4952(5)

Please tell me my 3 year old will look like yours! Mine is surrounded by mostly Austin's. the runners seem to shoot out in every direction, but they have not yet affected the roses. This is early spring so u cannot tell, but there is a New Dawn that happily coexists with this tree. I know the standards are a lot easier to control. Your vine is beautiful.

    Bookmark   September 2, 2013 at 8:14PM
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kandhi(z7VA)

What is the name of the white wisteria posted above, Do you fertilize it to have that many blooms?

    Bookmark   June 3, 2014 at 11:26AM
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anntn6b(z6b TN)

I grew it a while back. IIRC it was beloved as an exhibition rose for the shape of the bud and that it could be teased open for rose shows successfully. (And it made big blooms on long straight stems.)

    Bookmark   June 3, 2014 at 11:15AM
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hoovb zone 9 sunset 23

Hold them at the angle of the teepee you intend to build. If they sag, get something of a larger diameter. Strong is good.

    Bookmark   June 3, 2014 at 10:00AM
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seil zone 6b MI

As hoov said stronger is better! Think about the weight of a full grown rose, in full bloom, and wet from rain. That's very heavy stuff!

    Bookmark   June 3, 2014 at 10:36AM
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Cher(6 SW OH)

Ignore - posted in a different area.

    Bookmark   June 3, 2014 at 7:37AM
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Kippy(SoCal zone 10. Sunset Zone 24)

I think that not having a mono culture of just one plant has helped draw in the birds.

    Bookmark   June 2, 2014 at 8:12PM
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cecily(7 VA)

Hello JrTack, welcome to the rose forum. I think your foliage looks terrific. The slug damage is minimal and I wouldn't spray at this point -- rose slugs appear in early spring and vanish when the weather heats up. Sort of like aphids -- a large number appear when the bushes first leaf out and then only minimal numbers for the rest of the growing season. Your roses are in good shape, enjoy the flowers.

    Bookmark   June 3, 2014 at 7:32AM
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dukegg1(z6/7NJ)

Update: Here's my first rose (about May 15th). I've had about 8 blooms by now. So...I guess the early planting didnt hurt. PS, leaves look better now, too; I took care of whatever was munching on them.

    Bookmark   June 2, 2014 at 8:43PM
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mzstitch(Zone 7b South Carolina)

Likely a rose slug, small green worms that eat the leaves from the underside. I had them for the first time this year. New growth looks great!

This post was edited by mzstitch on Tue, Jun 3, 14 at 6:49

    Bookmark   June 3, 2014 at 6:47AM
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clax66

We had a brutal winter and an ice storm that caused major damage on the tree canopy in my city. I lost a few perennials but my David Austin roses survived...well, I'm not sure about one, there has been a little growth at the base but it hasn't been able to catch up to her sisters. I haven't had the heart to give up on her yet:(

    Bookmark   June 2, 2014 at 10:50PM
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summersrhythm_z6a

I lost all my rose trees in pots, 36 of them! They were in a shed during the winter, and I lost about 25 roses in the garden, plus it was the worst winter for rabbit damage.

    Bookmark   June 2, 2014 at 11:56PM
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ingrid_vc so. CA zone 9

That's wonderful, Sara-Ann, and I'm happy for you, knowing only too well what an incredible blessing that is. We've had no rain in what seems like forever, and will not have any until October or November at the earliest, with ever-present fire danger. Still, it's good to know that for someone there is the wonderful relief of a wet sky, and what it does to make the garden come alive again.

Ingrid

    Bookmark   June 2, 2014 at 4:27PM
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sara_ann-z6bok

Thank you everyone. I am hoping all who need rain will get it and this drought will end. This is serious for a lot of people. My main concern for here is our water situation. Our city is working on this issue and they are making some progress. I lost a majority of my roses several years ago, due to drought and I don't want that to happen again. Weather can sure wreak havoc, can't it?. The horrible winter that some had, the drought, the heat, there's always something! I am generally an upbeat person and try to have a positive outlook and I am very happy for this small reprieve and hope this situation is going to get better for everyone..

This post was edited by Sara-Ann on Mon, Jun 2, 14 at 23:22

    Bookmark   June 2, 2014 at 8:41PM
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michaelg(7a NC Mts)

I seriously doubt that anyone growing Lavender Lassie would agree with Pickering that it "blooms continuously," however generously that is construed.

    Bookmark   June 2, 2014 at 4:37PM
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the_morden_man((Z4-Z5) Ontario, Canada)

The Lavender Lassies in the pic I included are about 11 years old and originally grafted on Multiflora from PIckering. They receive about 8 hours of direct sun a day. They bloom twice a year with deadheading. Has been that way since year 1 and only the volume of blooms changed with age. It is by no stretch a continuous bloomer. They also blackspot mildly every summer in the bottom 15-20% of leaves, then drop the leaves cleanly and regrow new ones. The same experience with an LL I planted in the east coast of Canada in every regard.

I still think the rose in your pic is a bourbon, but whatever it is, as long as you're happy with it, that is all that truly matters.

    Bookmark   June 2, 2014 at 8:23PM
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