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 Rhododendron rex 
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Joined: Wed Feb 13, 2013 11:56 pm
Posts: 409
Location: Seekonk, Massachusetts USA, USDA zone 6b
Post Re: Rhododendron rex
Arturas,

I use 50% perlite 50% peat.

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Tue Feb 07, 2017 3:16 am
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Joined: Mon Oct 29, 2007 4:06 pm
Posts: 4501
Location: Islington, London UK
Post Re: Rhododendron rex
Arturas wrote:
I hope it is fixed


I can see the images now. Thanks.

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51º33'07"N x 0º07'21"W
43m (142 feet) ASL


Tue Feb 07, 2017 10:18 am
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Joined: Sat Jul 09, 2016 9:16 pm
Posts: 46
Location: Klaipeda Lithuania 6B zone 55°42 N
Post Re: Rhododendron rex
Tim, as I see, you pots are pretty small - one cross per pot and all under the cover? Do you use additional heating and light?


Tue Feb 07, 2017 11:35 am
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Joined: Wed Feb 13, 2013 11:56 pm
Posts: 409
Location: Seekonk, Massachusetts USA, USDA zone 6b
Post Re: Rhododendron rex
Yes I use 4" (10 cm) pots. One seed pack per pot. I cover each pot with a plastic bag and place under lights for 17 hours per day.

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Wed Feb 08, 2017 3:13 am
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Joined: Wed Feb 13, 2013 11:56 pm
Posts: 409
Location: Seekonk, Massachusetts USA, USDA zone 6b
Post Re: Rhododendron rex
Temperatures are warming up so I removed the protection on my Rhododendron seedlings.

Image

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Mon Feb 20, 2017 1:41 am
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Joined: Sat Jul 09, 2016 9:16 pm
Posts: 46
Location: Klaipeda Lithuania 6B zone 55°42 N
Post Re: Rhododendron rex
The temperatures are positive during the day here as well and snow is gone more than a week ago but it will be some night frosts still. I considering removal of protection as well, but it is good also against deer :wink: ...


Mon Feb 20, 2017 2:58 pm
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Joined: Wed Feb 13, 2013 11:56 pm
Posts: 409
Location: Seekonk, Massachusetts USA, USDA zone 6b
Post Re: Rhododendron rex
I took a walk around the garden yesterday. Here's a photo showing several rhododendron rex hybrid seedling I'm testing of the cross:

2014 026 BIR R. bureavii x rex ‘Tue Jorgensen’

The seedling on the left looks great and dark green.
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Sun Mar 19, 2017 12:49 pm
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Joined: Wed Feb 13, 2013 11:56 pm
Posts: 409
Location: Seekonk, Massachusetts USA, USDA zone 6b
Post Re: Rhododendron rex
This ARS 2014-188 R. Hardy Giant X macabeanum test seedling is looking good

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Sun Mar 19, 2017 12:53 pm
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Joined: Wed Feb 13, 2013 11:56 pm
Posts: 409
Location: Seekonk, Massachusetts USA, USDA zone 6b
Post Re: Rhododendron rex
It's nice to see the ARS 2013 R. arboreum ssp. cinnamomeum O.P. seedling looking great after a low temperature of 0F (-18C) this winter. The pollen donor for this O.P. cross must by hardier than cinnamomeum.

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Sun Mar 19, 2017 1:02 pm
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Joined: Mon May 30, 2016 3:16 am
Posts: 186
Location: Missouri USA
Post Rhododendron rex
Good looking plants, Tim.
I don't think temperatures here got as low as 0F, but came close to that.


Sun Mar 19, 2017 5:54 pm
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Joined: Wed Feb 13, 2013 11:56 pm
Posts: 409
Location: Seekonk, Massachusetts USA, USDA zone 6b
Post Re: Rhododendron rex
R. rex buds are starting to swell.

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Sat Apr 29, 2017 3:54 pm
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Joined: Tue Aug 05, 2008 12:42 am
Posts: 1717
Location: birmingham, UK
Post Re: Rhododendron rex
it's a great time of year when all the buds are swelling or opening. I love it :D

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Mo


Sun Apr 30, 2017 3:03 pm
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Joined: Mon May 30, 2016 3:16 am
Posts: 186
Location: Missouri USA
Post Rhododendron rex
Love the buds. Here are some from my garden.
Am posting each separately because my computer keeps locking up when I try to post multiples.
rex - 4/20/17
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Mon May 01, 2017 12:15 am
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Joined: Mon May 30, 2016 3:16 am
Posts: 186
Location: Missouri USA
Post Rhododendron rex
rex ssp. fictolacteum - 4/13/17
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Mon May 01, 2017 12:23 am
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Joined: Wed Feb 13, 2013 11:56 pm
Posts: 409
Location: Seekonk, Massachusetts USA, USDA zone 6b
Post Re: Rhododendron rex
Mo, please post some photos of your Rhododendrons!

Anne, great looking rex and fictolacteum. I'm impressed your big leafers are tolerating your climate.....great stuff to learn. Any blooms in your garden?

R. asterochnoum seedling starting to flush.
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Mon May 01, 2017 1:09 am
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