Knockout roses?

jimtnc(7b Raleigh tttf)April 28, 2008

I've not been a rose kind of person all this time, but I'm getting a lot more interested in the knockout version now. Do they have to be in full sun? How far apart is recommended for planting? Do some colors do better than others? Where are the best places around teh area to get them...of course reasonably. Thanks.

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irislover_nc(z7 nc)

Jim, I think these roses are fabulous. The color of the original is pretty intense so I think you need to spend a bit of time thinking about where to put it. Mine bloomed from April to January last season so it is likely to be in bloom at the same time as almost everything in your garden.

Both of mine( I have a pink Knockout too) are in full sun and are thriving. I have had very minimal black spot and no powdery mildew or bug problems. Even if a Japanese beetle hops on to chew a bud, it is covered with hundreds of other buds so I just flick it off and forget about it.

I like the look of the double since it just seems more "rosey" to me but I don't know about its growth habit so I am letting my neighbors experiment with them and I'll keep an eye on them.

My favorite thing is the scent. I stick my nose in a bud or two every time I walk outside.

Hope others have some good info for you about shade tolerance.

Meredith

    Bookmark   April 28, 2008 at 9:15AM
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alicia7b(z7b/8aNC)

Jim I got mine at Lowe's for 5 bucks, although I think they usually run $15-20. I have mine in full sun so I can't advise about shade, but Knockouts are carefree.

    Bookmark   April 28, 2008 at 6:40PM
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Bumblebeez SC Zone 7

They get huge fast so the small ones are fine. I think they are usually their own root too.

    Bookmark   April 28, 2008 at 10:11PM
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nannerbelle(8A)

I love roses, one of my favorites!! Sounds like I need to experiment with a Knockout since I'm in the process of putting in my little rose garden.

    Bookmark   April 28, 2008 at 11:08PM
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jimtnc(7b Raleigh tttf)

Thanks for the input folks. I'm still interested in knowing if they will exist in partial shade.

Many parts of my yard are sun most of the day until around 1 or 2pm, and I'm starting to run out of full sun areas. I would think they would do okay with about 6 hours sun and dappled after that, wouldn't you?

    Bookmark   April 29, 2008 at 5:42AM
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carolinabluesky

I have several different varieties of Knockout around the yard and the conditions you described should be fine. They only look like divas.
Another amazing rose is Nearly Wild- pink single flowers and they thrive in almost any conditions.

    Bookmark   April 29, 2008 at 7:34AM
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catc

I have a Blush Knockout in my side yard which is partial shade. It's getting less sun than you're describing and it's doing fine - it's blooming it's head off right now. It was here when I bought the house and the only thing I've done to it is a bit of pruning.

    Bookmark   April 29, 2008 at 9:37AM
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jimtnc(7b Raleigh tttf)

Good news about the partial shade thing. I want to get a few, and from what y'all have said they grow fast so the small ones are fine (1gal?). I guess since they are "registered" or whatever, the price is pretty much set, so the bigbox stores would be fine...like Lowes, right? How about immediate planting needs like fert, etc?

Will these things get really big? Big is okay, but I would like to NOT have any mounding on the mulch from any plants. Much rather have an open portion from bottom of plant to the ground. I have snakes come out of the woods a lot, and the more I reduce places for them to hide, the better that I feel about the world in general, if you know what I mean.

    Bookmark   April 29, 2008 at 9:55AM
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ronda_in_carolina

Jim,

Knockouts are the easiest shrub rose to grow. You don't need to baby them. I planted some on the hill in my backyard that was basically slab stone with a layer of dirt pushed over it. I figured the KO would be my best short at growing something other than those ugly juniper the builder put in. I found that MANY roses can handle tough SC heat and humidity.

Here is the before picture of the hill (when I moved in):

Here it is 3 years later. All the hot pink up there are KO roses.

If you want a list of other roses which are basically carefree, let me know.

    Bookmark   April 29, 2008 at 10:34AM
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Tammy Kennedy

nice change, ronda! Kudos to you- beautiful work.

    Bookmark   April 29, 2008 at 11:21AM
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jimtnc(7b Raleigh tttf)

Dadgum, Rhonda. I could use some of that talent at my little place. Great work.

I haven't gotten the first rose yet, but I intend to very soon. I'm looking at prices now, and any thing you want to throw out and add to the mix would be appreciated. Thanks.

    Bookmark   April 30, 2008 at 8:19AM
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irislover_nc(z7 nc)

I will throw out there, intending no offense to anyone who loves them, that Flower Carpet roses have been real stinkers for me. Black spot of epic proportions.

    Bookmark   April 30, 2008 at 1:52PM
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Bumblebeez SC Zone 7

Iris, I gave away all my flower carpet roses! They were awful.

    Bookmark   April 30, 2008 at 11:05PM
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claudia_sandgrower(SC Zone 8)

Last month I bought a 1-gal Rainbow and it's in a container in part sun, mostly shade. It's getting some kind of dusty whitish stuff on the new buds... powdery mildew, maybe? I don't know anything about roses, Knockout or otherwise, but I heard that these were almost no-brainers! Advice, anyone?

    Bookmark   May 3, 2008 at 12:47PM
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Bumblebeez SC Zone 7

Knockouts prefer sun. Move it to full sun and it will be fine.

    Bookmark   May 3, 2008 at 1:50PM
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dottie_in_charlotte(z7-8 NC)

Wow Rhonda..what a great spot for lavender. That's about the pitch of the front yard at my other house. Everything seemed to grow great on a rocky,south-facing hill so long as it got regular watering.
Your efforts will reward you for many years. Knockouts seem to need less pruning than carpets.

    Bookmark   May 3, 2008 at 4:54PM
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claudia_sandgrower(SC Zone 8)

Thanks, bumblebeez... will take your advice!

    Bookmark   May 3, 2008 at 6:44PM
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ronda_in_carolina

I think the lowest maintenance roses for me are:

Knock Out
Carefree Beauty
Carefree Sunshine
Country Dancer
Blush Noisette
Julia Child

See link below for pictures and retailers

Here is a link that might be useful: Help me Find

    Bookmark   May 5, 2008 at 10:14PM
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jimtnc(7b Raleigh tttf)

Do the Knockouts generally only come in the Rose red color locally? That's about all I've seen.

    Bookmark   May 6, 2008 at 6:12AM
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alicia7b(z7b/8aNC)

I thought all of the colors were available just about everywhere now.

    Bookmark   May 6, 2008 at 8:20AM
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trianglejohn

I've seen ads for other trademarked roses with all the same attributes as Knockout roses. Not sure if they'll live up to the hype (time will tell). The first wave of Knockouts did only come in a hard to place color, the newer pink ones are much more appealing to me.

    Bookmark   May 6, 2008 at 9:34AM
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claudia_sandgrower(SC Zone 8)

I took bumblebeez's advice last Sat (5/3) and moved my Rainbow Knockout rose (growing in a 12" container) from part shade (mostly shade) to full sun. It's still got the whitish stuff on it, and now it's looking a little limp. It's blooming, but nothing like what I'm reading about here. This is a really nice plant and I don't want to lose it... hope someone here can help!!

    Bookmark   May 10, 2008 at 11:36AM
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alicia7b(z7b/8aNC)

Claudia, I think mostly your rose needs a little time. One week isn't very long after a plant is moved.

    Bookmark   May 10, 2008 at 12:45PM
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Bumblebeez SC Zone 7

I would plant it in the ground too. I have kept the very small, young knoockouts in a container for the summer then planted in the fall but you'll have to plant it eventually anyway (or root prune). If you get it in the ground now, you'll gain a season.

    Bookmark   May 10, 2008 at 10:30PM
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betsy_k(z5 PA)

Hi,
I bought 2 KO Roses, rainbow pink, to replace 2 small evergreens. One of those had died and the other looked healthy. Will KO roses grow well where these evergreens have been living for 4 years, or should I add some pelleted lime to the mix?
Thanks,
Betsy K

    Bookmark   May 15, 2008 at 10:24AM
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Bumblebeez SC Zone 7

Why did your evergreens die? How much sun does the area get?

    Bookmark   May 15, 2008 at 12:18PM
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malon017

I also am considering planting a Knock-Out in what I'd call part shade in NC. I get good hot sun until about 1pm and then really HOT afternoons. What do you all think?

    Bookmark   April 28, 2009 at 2:45PM
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jimtnc(7b Raleigh tttf)

Should be okay, but they like the sun. Mine are already blooming like crazy.

    Bookmark   April 30, 2009 at 7:19AM
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forthofer

We love our knockout roses. Planted them in the fall and now blooming like crazy. Ours are in the full sun but summer months are still to come so we'll see.

    Bookmark   May 1, 2009 at 11:54AM
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diane1020

I am new to posting so I do not know how to add photos but my red Knockouts that I planted last year are shaded all morning by my house o only get afternoon sun and they are doing well. I would be glad to email photos of the roses.

    Bookmark   May 2, 2009 at 7:49PM
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memama_gayle(z8 NC)

I have the deep pink red and the light pink KO roses.Have had them several years and did not prune. They were about 7 feet tall and wide! Pruned them had this year and they are just as beautiful as ever. They bloom when tall or short! I do not spray them and I am in blackspot big-time country. None on KO! They are the way to go! They make such a statement!

    Bookmark   May 7, 2009 at 8:36PM
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catzteach71

We planted 4 small KOs in a center island (over 6 hrs a day, full sun and alls well) at our new home 3 years ago - yr#1 we had good blooms, average growth. Yr#2 same thing. This year they are something to behold! They have gone nuts! I swear they have doubled their size (w and h) just this spring! They are stunning - full of blooms and I truly have not done a thing to them. No pruning, spraying or feeding. I am a novice gardener so truly - I am a very bad "rose" mom. They are such wonderful plants! I was not into having roses (b/c I thought they were touchy) but my husband liked these - well he picked some winners. They have been attracting numerous fans in the neighborhood who just love the wash of color in out yard. But I have some ?s- since I know I need to prune them, when can that be done? Is now ok? Do I have to wait until fall? Can I trim spent blooms to help shape them up and do major "choppage" later in the year? Any advice would be appreciated - Thanks!

    Bookmark   May 16, 2009 at 12:44AM
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Bumblebeez SC Zone 7

Studies have shown that knockouts bloom better/more without removing spent blooms. However, sometimes I clip a limb back to improve the overall appearance.
Knockouts may be cut back to 18" or to what height you want in December through April, preferably during the cold dormant season. Gardeners have differing opinions as to what month is best.
I have some ko's I keep small and then I have a large billowy hedge. I use hedge clippers on all of them.

    Bookmark   May 16, 2009 at 9:46AM
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AngieinWV

I am also curious if they will grow in partial shade. I have planted them as a border with hostas between. They get full morning sun until about noon.

    Bookmark   May 19, 2013 at 12:44PM
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stir_fryi

How high do these grow? They sell them at Costo and the tag says 3' -- I wouldn't want them any higher because they'd block the view out my window.

    Bookmark   May 21, 2013 at 8:55AM
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lsst(7b)

My Knockouts have grown as tall as 9 feet. They respond well to cutting with hedge trimmers.

    Bookmark   May 22, 2013 at 2:52AM
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nannerbelle(8A)

I only have one, I don't even know the name of it. I picked it up 2 years ago at my local hardware, paid $9.95 for it. I was very attracted to it because of the color. It's a hot, hot pink, almost looks neon. It's also a double. It's one of the prettiest roses I've ever seen in bloom. I just had it took out to move it, and it's shoulder high on me in a 5 gal pot. And loaded with buds. These are profuse bloomers!! I will be getting more of these for the new landscaping!!

    Bookmark   May 22, 2013 at 4:21PM
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msjay2u(7)

I have mine in partial sun. It does not get a good dose of direct sunshine until about 2PM and then it does not last long. In general I didn't really like my knockouts but last year when we went through a heat spell it looked like someone put a match to a lot of my plants and they burnt up. The knockouts were blooming like crazy. I trim them down to about 18" each year and they come back huge and full of blooms. I also use the Miracle Grow fertilizer stakes for shrubs. So no matter what I have felt about them in the beginning they have been proven performers. I have a black thumb so these are perfect for me.

    Bookmark   May 27, 2013 at 4:23PM
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lsst(7b)

Do watch out for RRV - Rose Rosette Virus.
I have lost 90% of my roses in just two years.
Knockouts are prone to develop it and it is a serious problem in Upstate SC.
On the Rose Forums here on GW you can learn about it.
Here is just one link. There are many more.

Here is a link that might be useful: Knockouts RRD

    Bookmark   May 27, 2013 at 11:13PM
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