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Author Topic: Rhododendron... every garden should have some  (Read 146639 times)

mark smyth

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Re: Rhododendron... every garden should have some
« Reply #675 on: February 03, 2014, 04:23:04 PM »
I would like to grow some small R. vireya in my unheated green house. Am I asking too much?
Antrim, Northern Ireland Z8
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ian mcenery

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Re: Rhododendron... every garden should have some
« Reply #676 on: February 03, 2014, 06:10:25 PM »
I've been out collecting seeds again, can anyone help me identify these?



Pianma pass, Liuku, Nujiang, Yunnan, around 3000m altitude:

(Attachment Link)
(Attachment Link)

3 looks a bit like a form of arboreum to me
Ian McEnery Sutton Coldfield  West Midlands 600ft above sea level

GordonT

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Re: Rhododendron... every garden should have some
« Reply #677 on: February 03, 2014, 08:25:14 PM »
I've been out collecting seeds again, can anyone help me identify these?

Tianchi Lake, Shangri-La, Yunnan - Rh. rupicola ssp. rupicola, I presume?

(Attachment Link)

The first one looks to me like Rhododendron hippophaeoides, though I am not familiar with R. rupicola. If it is R. hippophaeoides, narrow and small leaf blades with many flowered heads, would suggest it is variety occidentale.
Southwestern Nova Scotia,
Zone 6B or above , depending on the year.

johnw

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Re: Rhododendron... every garden should have some
« Reply #678 on: February 03, 2014, 09:05:51 PM »
I would like to grow some small R. vireya in my unheated green house. Am I asking too much?

Mark

No problem as long as it does freeze in there.  About 2c is about the lowest w/o trouble.  Some of the alpine ones are said to take light frosts (i.e -1c with a temp bounce shortly thereafter) but they're so rare and beautiful I wouldn't risk a test.

Go fob the dwarf ones like St. Valentine et al as the others can get awfully rangy even with pruning.  At one time I had about 25 or 30 of them until I couldn't no longer move in the ghouse.  I gave them all away except for St. V, its sister, 2 saxifagoides hybrids (v v dwarf) and christinae x jasminiflorum (intermediate).

Extremely open mix with coir chunks and pumice in clay pots, underpot and never but never water when moist.
« Last Edit: February 03, 2014, 09:11:41 PM by johnw »
John in coastal Nova Scotia

johnw

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Re: Rhododendron... every garden should have some
« Reply #679 on: February 03, 2014, 09:10:39 PM »
Can't see any indumentum which should be clearly visinble for arboreum.

Leaf not correct for hippophaeoides, habit should be more upright and flowers too small, see attached.  Also have a white one here - - Glendoick Ice???.

johnw
John in coastal Nova Scotia

 


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