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 Rhododendron rex 
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Joined: Tue Aug 05, 2008 12:42 am
Posts: 1717
Location: birmingham, UK
Post Re: Rhododendron rex
Yes yes Yes now we are talking! ssp Clementinae is very difficult to source. It took me a while to twig. ssp aureodorsale is a totally different plant (I have a small one too but not in the same league). I was begging Ken cox for three years before I got one. Diificult to propagate I was told. It's up there as my number 1. It's hard to explain to someone not into rhododendron why It's number 1 on my list when so many other beautiful ones and thousands to choose from. The curve of the leaf , the undersides Inspiration:

http://www.rhodogarden.com/mixed/Scotti ... tinae.html

Flushing earlier this year


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Mo


Tue Jul 04, 2017 12:46 am
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Joined: Sun Mar 24, 2013 2:37 pm
Posts: 211
Location: Halifax, NS
Post Re: Rhododendron rex
Mo - I had this labelled as ssp. aureodorsale from Jens Nielsen's seed c.w. Doesn't look right to me but then again I haven't seen aureodorsale itself, just that I don't see any clementinae traits there. Think they all croaked due to a pot drainage issue, must go check for survivors. Do you think the photo is mis-labelled?

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I think when Jens N. was here he told me clementinae was one of the most difficult to root but he did root it but w/o rooting powder. He said that was a frequent trick he used with the difficult ones! R. wardii was another nasty one to root.

Jens Nielsen collected some very fine clementinaes in China whilst at Glendoick.

Lastly 2 photos of clementinaes in Denmark (?), at Svend Hansen's (photo 1) and at Jens Birck's in Copenhagen or Yasuyuki Doi's in Hokkaido (photo 2) .

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john


Last edited by johnw on Mon Oct 09, 2017 3:02 pm, edited 2 times in total.



Tue Jul 04, 2017 1:10 am
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Joined: Mon May 30, 2016 3:16 am
Posts: 177
Location: Missouri USA
Post Rhododendron rex
Nice photos of a Rhododendron I don't know much about.


Tue Jul 04, 2017 7:09 pm
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Joined: Tue Aug 05, 2008 12:42 am
Posts: 1717
Location: birmingham, UK
Post Re: Rhododendron rex
John, mine looks nothing like yours. From what I gleamed, the general consensus was that aureodorsale was a diiferent plant. It looks nothing like ssp clementinae. This is the second year in a row it's been chomped on. So it's tastier than ssp clementinae. The pics I saw looked like mine. I could not tell you what you have it certainly is better looking than mine. Does it have any indumentum? when flushing this aureodorsale has a very slight white tomentum which lasts a few days barely noticeable and that's it.
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I had a great dane but killed it :oops: Beautiful picture so i raise you arizelum var rubicosum instead




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Mo


Tue Jul 04, 2017 11:59 pm
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Joined: Sun Mar 24, 2013 2:37 pm
Posts: 211
Location: Halifax, NS
Post Re: Rhododendron rex
Quite frankly I now wonder if my slide got mislabelled. It looks more like a macabeanum hybrid of sorts.

I'll post a pic if I find one of the real mccoys.

Nice to see your true plant.

john


Wed Jul 05, 2017 12:07 am
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Joined: Tue Aug 05, 2008 12:42 am
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Location: birmingham, UK
Post Re: Rhododendron rex
It certainly resembles some of Tims beauties.

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Mo


Wed Jul 05, 2017 12:11 am
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Joined: Wed Feb 13, 2013 11:56 pm
Posts: 397
Location: Seekonk, Massachusetts USA, USDA zone 6b
Post Re: Rhododendron rex
Great photos Mo & John. Keep the photos coming..

The R. arizelum var rubicosum and Great Dane selfies are beauties.


Sun Jul 09, 2017 10:40 am
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Joined: Mon May 30, 2016 3:16 am
Posts: 177
Location: Missouri USA
Post Rhododendron rex
Please see my post from today under Rhododendron sinogrande. The hodgsonii I posted about here in October 2016 has succumbed to the heat. :cry:

Here it is in all its glory last Fall.
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Thu Jul 27, 2017 5:19 pm
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Joined: Wed Feb 13, 2013 11:56 pm
Posts: 397
Location: Seekonk, Massachusetts USA, USDA zone 6b
Post Re: Rhododendron rex
Very sad news Anne. How many days of heat? Perhaps it was the warm nights too? What were your low temperatures?


Sat Jul 29, 2017 1:38 am
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Joined: Sun Mar 24, 2013 2:37 pm
Posts: 211
Location: Halifax, NS
Post Re: Rhododendron rex
So sorry to hear of your loses Anne. I wonder if grafting on County of York might not help, though these big leafers seems to need to shut down at night.

On mid-July I was out to a friend's on the coast. Her R. rex is up about 4ft now. Temps have been rather cool here, today it got to 21c but the fog kept rolling in and out so was more like 17c most of the day.

john
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Sun Jul 30, 2017 12:06 am
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Joined: Mon May 30, 2016 3:16 am
Posts: 177
Location: Missouri USA
Post Rhododendron rex
Tim B. - daytime temperatures of 98F (36C) IN THE SHADE went on for days and days. Nighttime temperatures were in the 80s. Humidity high - "real feel" in the 100F and higher range per Accuweather.

John W. Thank you for your kind words. I will never forget that big sinogrande. Bob Zimmerman at Chimacum Woods Nursery has them and when he finds a nice one for me, he will send me a photo for my review. Hoping that will soften the blow of the loss of the first one. This time sinogrande into the house when temps. hit 80F and stay there until Fall then back inside for winter.


Sun Jul 30, 2017 1:53 am
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Joined: Mon May 30, 2016 3:16 am
Posts: 177
Location: Missouri USA
Post Rhododendron rex
Here is one of my new acquisitions - Rhododendron rex from Chimacum Woods Nursery.
Trying it planted in the ground, as growing in pots has not worked for me lately.
Will need to be vigilant with the frost cloth during cold weather.
(The camera is seeing red, but the mulch and pine needles are not red.)

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Mon Oct 09, 2017 12:23 am
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Joined: Wed Feb 13, 2013 11:56 pm
Posts: 397
Location: Seekonk, Massachusetts USA, USDA zone 6b
Post Re: Rhododendron rex
Anne, your new rex is a beauty. I hope she fairs well for you.

What have you lost in your pots this year?


Fri Oct 13, 2017 1:30 am
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Joined: Mon May 30, 2016 3:16 am
Posts: 177
Location: Missouri USA
Post Rhododendron rex
Tim - glad you like the R. rex.
I have lost many things in pots this year, and have decided to plant all new things in the ground, UNLESS they definitely will not survive due to the winters.
Worst of all was the big sinogrande that died. My source cannot supply any more because their source "dried up."
I have another large sinogrande coming tomorrow from a different source, but it will probably not compare to the sinogrande from Gossler Farms.
I lost that lovely hodgsonii with excellent branching - another tragic loss.
Besides that were small plants from RSBG, some of which I had for more than a year.
Not sure what the problem is, but am now convinced that in ground planting is the way to go.
Several people on this forum have questioned my affinity for growing in pots, and I see why now.
I still have quite a few in pots, and next spring will review the situation and decide which of them I must put in the ground.

Did you see my post under the topic "New Plants" ?


Fri Oct 13, 2017 2:56 am
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Joined: Wed Feb 13, 2013 11:56 pm
Posts: 397
Location: Seekonk, Massachusetts USA, USDA zone 6b
Post Re: Rhododendron rex
I’m sorry to hear about the sinogrande and hodgsonii. I do hope some of your tests will be successful and I’m always interested in hearing about your results.


Fri Oct 13, 2017 10:23 am
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