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Author Topic: Roscoea 2024  (Read 7389 times)

Herman Mylemans

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Roscoea 2024
« on: May 19, 2024, 02:32:38 PM »
Roscoea humeana 'Alba'

Roscoea cautleoides
Belgium

Maggi Young

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Re: Roscoea 2024
« Reply #1 on: May 20, 2024, 09:10:16 PM »
Roscoeas barely thinking about coming above ground here in Aberdeen!
Margaret Young in Aberdeen, North East Scotland Zone 7 -ish!

Editor: International Rock Gardener e-magazine

arisaema

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Re: Roscoea 2024
« Reply #2 on: May 20, 2024, 09:41:03 PM »
Ditto in Denmark, even in the current heat wave we're having. Just tiny sprouts on cautleoides and being my usual impatient self I had to check that purpurea was still alive in the pot...

Herman Mylemans

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Re: Roscoea 2024
« Reply #3 on: July 21, 2024, 03:48:27 PM »
Roscoea procera

Roscoea purpurea 'Royal Purple Group'
Belgium

Herman Mylemans

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Re: Roscoea 2024
« Reply #4 on: July 21, 2024, 03:49:04 PM »
Roscoea scillifolia is Roscoea alpina. I looked at the wrong number.
After discussion it should be Roscoea scillifolia!
« Last Edit: August 03, 2024, 09:53:21 AM by Herman Mylemans »
Belgium

Herman Mylemans

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Re: Roscoea 2024
« Reply #5 on: July 28, 2024, 10:38:38 AM »
Roscoea purpurea ‘Red Gurkha’

Roscoea purpurea 'Paul Bygrave's hybrids' exist in different colors.
Belgium

MarcR

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Re: Roscoea 2024
« Reply #6 on: July 30, 2024, 11:11:10 PM »
Herman,

Very nice blooms!  I just transplanted seedlings of 6 species of Roscoea.  How long do they take from seed to bloom?
Marc Rosenblum

Falls City, OR USA

I am in USDA zone 8b where temperatures almost never fall below 15F -9.4C.  Rainfall 50" 110 cm + but none  June-September.  We seldom get snow; but when it comes we get 30" overnight. Soil is sandy loam with a lot of humus. 
Oregon- where Dallas is NNW of Phoenix

Herman Mylemans

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Re: Roscoea 2024
« Reply #7 on: August 01, 2024, 07:49:28 AM »
Herman,

Very nice blooms!  I just transplanted seedlings of 6 species of Roscoea.  How long do they take from seed to bloom?
Marc, mostly it takes 3 to 4 years. Sometimes the smaller ones after 2 years.
Belgium

MarcR

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Re: Roscoea 2024
« Reply #8 on: August 01, 2024, 11:57:03 AM »
Herman,

Thank you!
Marc Rosenblum

Falls City, OR USA

I am in USDA zone 8b where temperatures almost never fall below 15F -9.4C.  Rainfall 50" 110 cm + but none  June-September.  We seldom get snow; but when it comes we get 30" overnight. Soil is sandy loam with a lot of humus. 
Oregon- where Dallas is NNW of Phoenix

Herman Mylemans

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Re: Roscoea 2024
« Reply #9 on: August 01, 2024, 01:02:56 PM »
Roscoea cangshanensis - BWJ7848 smaller flowers

Roscoea purpurea 'Paul Bygrave's hybrids' dark flower
Belgium

Tomte

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Re: Roscoea 2024
« Reply #10 on: August 01, 2024, 07:23:45 PM »
Roscoea scillifolia is Roscoea alpina. I looked at the wrong number.
Herman, these look very much like scillifolia to me..
Tom S.
Upper Bavaria close to Munich, on 700 m

Herman Mylemans

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Re: Roscoea 2024
« Reply #11 on: August 02, 2024, 07:36:33 AM »
Herman, these look very much like scillifolia to me..
Tomte, these plants are around 20 cm high and scillifolia are higher (30-40cm)
Belgium

arisaema

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Re: Roscoea 2024
« Reply #12 on: August 02, 2024, 07:40:33 AM »
Tomte, these plants are around 20 cm high and scillifolia are higher (30-40cm)

It is R. scillifolia, R. alpina is rather different looking:

https://ppbc.iplant.cn/tu/11580596

Véronique Macrelle

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Re: Roscoea 2024
« Reply #13 on: August 02, 2024, 09:06:48 AM »
is R. purpurea the most vigorous species?
 my March seedlings are already 20 cm high! but they started slowly...

on the other hand, a species whose label I've lost (but fortunately you'll be there when it flowers ;D) sown last year is still only 7 cm high.

Herman Mylemans

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Re: Roscoea 2024
« Reply #14 on: August 03, 2024, 09:51:59 AM »
It is R. scillifolia, R. alpina is rather different looking:

https://ppbc.iplant.cn/tu/11580596
I bought this one as Roscoea alpina more then 20 years ago. I know that it is not easy to have right names. According the book 'Roscoea' from Jill Cowley many pink scillifolia are wrongly named alpina. The leaves of alpina are wider. So I will change the name again.
Belgium

 


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