Return to the Roses Forum | Post a Follow-Up

 o
Knockouts in zone 9 in partial shade

Posted by jacqueline3 9CA (My Page) on
Wed, Oct 16, 13 at 13:47

I have one knockout rose - Blushing Knockout. It bloomed very nicely the first Spring after I planted it, but has not done much since then. It just sort of sits there - its "Fall flush" consisted of 1 (one) bloom. It is free of disease, but has not grown much at all after its initial growth spurt.

Undoubtedly my fault, as they seem to do amazingly well for other people. My garden is sun challenged. I planted BK in a rose bed full of teas and chinas who all bloom happily in partial shade. Right now this knockout rose is 3 feet away from a "Mme Joseph Schwartz" tea rose which was planted about 40 years ago, which is pumping out both its usual lovely white blooms, and also pink ones, because part of it has reverted back to "Duchesse de Brabant".

So, any suggestions? All of the roses in this bed get fed and pruned (fed with 9 month osmocote) once a year. They get weeded and mulched. They all get irrigated through our long long dry (it has not rained since December 2012 - which I admit is unusual - our normal rainy season is Nov - May) Summers.

My BK is about 3 years old, so it is coming to the end of the slack I give "infant" roses. Perhaps it does not like zone 9? Needs real "full sun" conditions, unlike my OGRs?

Any thoughts or suggestions would be appreciated.

Jackie


Follow-Up Postings:

 o
RE: Knockouts in zone 9 in partial shade

  • Posted by jim1961 6a Central Pa. (My Page) on
    Wed, Oct 16, 13 at 15:03

Only thing I can think of:

Yes could be a lack of sun problem like you mention...
Could be getting to much Nitrogen or fertilizer but the stuff your using should feed it slowly...But who knows...
Maybe doesn't like constant high heat?
Could be a combination of things...
Dud plant?

Wish I could help more... Hope you get it figured out...


 o
RE: Knockouts in zone 9 in partial shade

  • Posted by jim1961 6a Central Pa. (My Page) on
    Thu, Oct 17, 13 at 19:04

Anybody from California or anywhere else have any ideas for jacqueline3?


 o
RE: Knockouts in zone 9 in partial shade

I would suspect lack of sunshine also, but you might try feeding it with an organic product like Espoma's Rose Tone (or Plant Tone or Holly Tone) which contains some alfalfa--or go to a grain store and buy a bag of alfalfa (meal or cubes)--except that I don't think you can get it in a smaller bag for just one or two roses--which is why I suggested the Espoma product which has some (although not a lot) of alfalfa in it. Alfalfa is a kind of growing stimulant, so it may help.

Hope that helps.

Kate


 o
RE: Knockouts in zone 9 in partial shade

  • Posted by hoovb z9 Southern CA (My Page) on
    Fri, Oct 18, 13 at 14:21

I tried a couple of KOs for several years. They did poorly here, did not bloom much (in full sun), mildewed, so I got rid of them. The roses I replaced them with are doing splendidly in their spots, so it wasn't the spots.


 o
RE: Knockouts in zone 9 in partial shade

  • Posted by subk3 7a/Mid TN (My Page) on
    Fri, Oct 18, 13 at 14:27

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!


 o
RE: Knockouts in zone 9 in partial shade

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.


 o Post a Follow-Up

Please Note: Only registered members are able to post messages to this forum.

    If you are a member, please log in.

    If you aren't yet a member, join now!


Return to the Roses Forum

Information about Posting

  • You must be logged in to post a message. Once you are logged in, a posting window will appear at the bottom of the messages. If you are not a member, please register for an account.
  • Please review our Rules of Play before posting.
  • Posting is a two-step process. Once you have composed your message, you will be taken to the preview page. You will then have a chance to review your post, make changes and upload photos.
  • After posting your message, you may need to refresh the forum page in order to see it.
  • Before posting copyrighted material, please read about Copyright and Fair Use.
  • We have a strict no-advertising policy!
  • If you would like to practice posting or uploading photos, please visit our Test forum.
  • If you need assistance, please Contact Us and we will be happy to help.


Learn more about in-text links on this page here