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Coeloglossum,Leucorchis,Platanthera,Neottianthe,Nigritella               Cypripedium

Cypripedium species                    Cypripedium hybrids

Cypripedium hybrids

There are for the moment approximately 70-80 different Cypripedium hybrids, raised artificially. There are some different registers, depending on how the species are distinguished and defined. We refer to the list of the Cypripedium World Champion, Mr Werner Frosch in Germany.

Fundamentally, almost any two Cypripedium species can be crossed and produce a seed capsule. In almost all cases seeds also develop and germinate on  medium - but several hybrids do not develop normally, and even
more are not viable is soil. 

At least 12-15 of our hybrids examined  never reached flowering size in soil, some died quickly in soil - all this of course due to poor genetic "fitting". For example, of 4 different Cyp guttatum hybrids tried, all grew rather well but eventually
died in soil rather early.

When using Cyp reginae as mother plant
in hybridising you usually get 100 % Cyp reginae as off-spring, due to so called apomixes! It can be used as father plant, for example in Cyp "Ulla Silkens".

Also, when you have found a good hybrid
combination, and plan to raise it on a scale, it can be important to use not only the same clones, but also the same individual male and female plant to get a good result. A change of female and male species also in many cases gives different results!

On the other hand, many hybrids are excellent garden plants, with a beauty and growth vigour which go well beyond most species! But you never ever know in advance if the hybrid will be beautiful and hardy and easy to grow! A large number of hybrids registered are just raised in very limited numbers - and are not a good garden plants, though if good-looking!!

With increased experience, a number 
of hybrids will crystallize into very good
and common garden plants, also outside
the circle of the experts. But several hybrids will be lack of vitality or are difficult to grow.


The two most sold and widely spread Cypripedium hybrids are Cyp "Gisela" and Cyp 'Ulla Silkens'. These seem to grow in all kinds of soil in all climate zones, and quickly increase by division.

Mr Werner Frosch in Germany has raised a very large number of Cypripedium hybrids from seeds, but still he recommends only a very limited number for "common gardening". Future and more experience
will show the superior ones, when they are being raised in larger numbers and grown for some more years.

We shall try to describe our own experience with hybridising, giving some recommendations, and possibly a little prognosis of the future. There is a large number of hybrids we have never ever 
seen, less tried to grow. We describe only hybrids of which we have our own experience in growing or propagating.
Several hybrids are not in flowering size yet, and a fair judgment can't be done.

+ not so good for gardening
++ a good garden plant
+++ a very good garden plant


Cyp Ulla Silkens ( C flavum x reginae) with 91 flowers in 2004 June. Beside Werner Frosch´s Cyp Gisela the best and the most sold hybrid of Cypripedium.


Cyp. 'Gisela'

This hybrid has the same parents as 
Cyp. 'Aki'  but we have mad the crossing
the "opposite way".  

Cyp. parviflorum x tibeticum

Cypripedium 'Ulla Silkens', 10 % are
 almost pure white.

Cyp. calceolus x macranthos

Hybrids between Cyp. parviflorum and other species are often very good combinations...

...for example crossed with Cyp. tibeticum;  Cyp. 'Axel'


Cyp. parviflorum x Cyp. speciosum and Cyp, parviflorum x Cyp. macranthos. Can behave a little differently  later on  in medium and in soil. 



Cyp. 'Axel' in  beautiful garden surroundings. 

Cypripedium 'Aki'
(macranthos x parviflorum var. pubescens)
+++
One of the most beautiful hybrids, very big flower,
also erect and tall. Very variable in colour in different plants. One of the very best from Werner Frosch! We have have raised it too, with "opposite crossing", see below.


Cyp "Aki". A very good
Cyp hybrid; big flower. tall
erect stem!

Cypripedium 'Axel'
(parviflorum x tibeticum)
+++
is a beautiful hybrid, very big flower. A disadvantage for
the propagator is the rather slow initial growth in soil, but finally big and healthy plants.
But parviflorum x macranthos seem to have stronger
Growth.

Cyp Axel ( Cyp parviflorum x tibeticum)  is a 
very tall plant  with  chequered flowers 

Cyp parviflorum x tibeticum
 
Cypripedium 'Gisela' (parviflorum x macranthos)
+++
is another of Werner Frosch´s very best hybrids. Very
beautiful flower - and very easy to grow in gardens.

Using different clones/plants of macranthos/speciosum etc
gives hybrids with different growing qualities but they are
always very beautiful and good garden plants.

 


Cyp. 'Gisela'. 2004 just one stem;  2005 two stems with flowers 
Cypripedium 'Inge' (parviflorum x fasciolatum)

We have bought some small plants of this hybrid to test it.
Future will tell if Cyp parviflorum or Cyp calceolus
is the best hybrid partner to Cyp fasciolatum, Werner
Frosch has raised both of them. 
Cypripedium 'Johnny Petersen'
+++
Our own first variety of "Gisela", growing like that one, but with differently coloured flowers.
Very easy to propagate and to grow, like most parviflorum hybrids. Has been raised in rather large numbers.

 


Cypripedium 'Johnny Petersen, first year in soil

Cypripedium 'Johnny Petersen' a red form

This  is the usual look of Cypripedium 'Johnny Petersen'. 
Cypripeidum 'Maria' (parviflorum x speciosum)

Is another parviflorum hybrid, this with Cyp speciosum. Initially raised by Werner Frosch, we now raise that one on a large scale. Grows like similar ones.
Cypripeidum 'Michael' (macranthos x henryi)                                       +++
is another hybrid from Werner Frosch. It has a very beautiful
flower and has blossomed some sequential years in our garden. The flower is not very big, being 50% Cyp Henryi.

In 2005 this hybrid plant blossomed for the first time. Future will
tell how good it is a a garden plant.
Cypripedium 'Pixi'
(calceolus x tibeticum)
+++
Very easy to grow and hardy. We use a 40 cm tall Cyp tibeticum for crossing and the hybrid is approx 35-40 cm tall. Are being propagated in large numbers.

 On the right Cypripedium 'Pixi' (calceolus x tibeticum) 

Cyp calceolus x tibeticum. Grows to approx 35 cm height.
Cypripedium 'Philipp'
(kentuckiense x macranthos)
++
We just have one adult plant.. It is a very big flower, rather pale colours. Will probably be common in garden growing.

Cyp "Philipp".
Cypripedium 'Prof. Karl Robatsch' (reginae x acaule )
+
Well, the plant we bought from the propagator looks just like a common Cyp reginae - as usually is the case with reginae hybrids if reginae is the mother plant...
Cypripedium 'Princess' (reginae x lichiangense)
(Cyp reginae father plants)
+
Initially raised by Mr Carson Whitlow many years ago - but our seedlings have still 10 years after sowing not flowered! Can not be recommended...

Cyp. 'Princess' TEN YEARS after sowing!
Cypripedium 'Sabine' 
(fasciolatum x macranthos)
We just have a few plants from the propagator and don't have so much experience yet. We have made the crossing in summer 2005.

Cypripedium 'Sebastian'
(parviflorum x montanum)
++
Another good parviflorum hybrid. We have a few adult
plants from the propagator. Beautiful flower - but the plant could have been more vital (?)

Cypripedium 'Sebastian' 
Cypripedium 'Sunny' (fasciolatum x calceolus)
+++
According to pictures from Werner Frosch it seems
to be an XXL Cyp calceolus!! Probably a very good garden plant, and we have very recently (late July 2005) sown seeds of it.

 

 

Cypripedium 'Ulla Silkens' (reginae x flavum)
+++
One of the very best Cypripedium hybrids! Can be
described as a very much improved Cyp reginae with
a great variability in colouring from pure white to dark red lip. Tall, erect, quickly increasing by division and
seems to grow in any soil and any climate condition. We have raised several thousands of it through out the years.

Cyp Ulla Silkens grows fastest of all Cyps.(C flavum x reginae) 1:a the year in soil!!

Cyp. 'Ulla Silkens' can grow "anywhere"
and form large colonies.

Cyp. 'Ulla Silkens' is variable in colouring.
Cypripedium 'Tower Hill'
(pubescens x speciosum)
+++
We have also raised this one several years ago, and it is
similar to Cyp "Aki" and an excellent garden plant with its big flowers and erect stems. More propagation of Cyp pubescens x different macranthos types are going on.

Cyp pubescens x speciosum is a very, very beautiful plant.

Tall and erect, like Cyp "Aki".
Cypripedium calceolus x macranthos.
++
Like other calceolus hybrids a little slower initial growth in soil than parviflorum hybrids - but later on big, healthy, beautiful plants. We have crossed calceolus with a white macranthos summer 2005.

Cyp calceolus x macranthos – beautiful  and healthy.
Cypripedium flavum x fasciolatum

Sown for the first time 2002. Seems to be very vigorous
also in soil and we have great hopes for a new good garden
plant. Good winter survival outdoors of small plants.


Here's a new promising  hybrid; Cyp flavum x fasciolatum. with a very strong growth, good survival also outdoors in winter and long growing season.  Here first year in soil.
Cypripedium flavum x formosanum

Sown 2003 and 2004. Easy to propagate on medium, good survival in soil first year, but small so far, first year in soil. Developed leaves late, like flavum, this could indicate that the "formosanum risk" of freezing in early spring is low.

 


Cypripedium flavum can be hybridized with almost any other
Cyp -a few are not viable but almost all. On the right
crossed with Cyp Formosanum. 

First year on soil
Cypripedium flavum x corrugatum

Sown 2002 and 2003. 
Seems to be a rather poor hybrid with small plants
In soil and some losses. Poor genetic match?
Cypripedium hotei-atsumorianum x tibeticum

Sown 2003 and 2004 and more is planned! Seems very promising, growth both on medium and in soil better than either of the originals! We have used the 40 cm tall tibeticum as male plant.

Another a new exiting hybrid. Are now being raised in a very
large scale.

On the left Cypripedium hotei-atsumorianum x tibeticum
Some more hybrids are growing on medium, 
or in soil at young age. We will report later about
results.

You can also go on with with hybridising, using a
hybrid as mother plant, and pollen from a species.
In some cases no or very few seeds develop, in other
cases a large number of seeds develop.

In soil we have some very very strong Cyp pubescens x macranthos x tibeticum.
On medium we have a large number of Cyp 'Ulla Silkens' x tibeticum and x macranthos.
- But if they are better looking with better growing qualities remains to be seen..

Cyp. pubescens x speciosum x tibeticum first year on soil.

Achim

pubescens

froschii

Frosch

2003

Aki

macranthos

pubescens

Frosch

1996

x alaskanum

guttatum

yatabeanum

P.M. Br.

1995

x andrewsii

parviflorum

candidum

Fuller

1932

Annette

macranthos

candidum

Frosch

2002

Axel

parviflorum

tibeticum

Malmgren

1998

Bernd

macranthos

segawai

Frosch

2001

Betty Maier

macranthos

planipetalum

Maier

2004

Bill

pubescens

tibeticum

Frosch

2004

Carolin

calceolus

speciosum

Frosch

1991

Carson

parviflorum

formosanum

Frosch

1992

x catherinae

macranthos

shanxiense

Averyanov

1999

Chauncey

parviflorum

segawai

Whitlow

1993

Cleo Pinkepank

kentuckiense

hotei

Pinkepank

1998

x columbianum

montanum

pubescens

Sheviak

1992

Dietrich

calceolus

kentuckiense

Frosch

2003

Emil

parviflorum

calceolus

Frosch

1993

Erika

calceolus

candidum

Frosch

2003

Fantasy

reginae

magaritaceum

Whitlow

1992

x favillianum

pubescens

candidum

Curtis

1932

Francis

kentuckiense

speciosum

Robinson

2000

Gabriela

fasciolatum

kentuckiense

Frosch

2003

Genesis

reginae

pubescens

Whitlow

1987

Gidget

candidum

henryi

Whitlow

1993

Gisela

parviflorum

macranthos

Frosch

1992

Hank Small

parviflorum

henryi

Whitlow

1991

Hedi

Ingrid

macranthos

Frosch

1997

Heike

formosanum

segawai

Frosch

1998

x herae

reginae

pubescens

Sheviak

2004

Hideki Okuyama

fasciolatum

ventricosum

Frosch

2001

Hilda

kentuckiense

ventricosum

Robinson

2001

Inge

parviflorum

fasciolatum

Frosch

2003

Ingrid

parviflorum

cordigerum

Frosch

1989

Johanna

kentuckiense

corrugatum

Robinson

2003

Johnny Petersen

parviflorum

rebunense

Malmgren

1999

Julie Ann

kentuckiense

calcicolum

Keisling

2004

Karl Heinz

calceolus

cordigerum

Frosch

1990

Kathleen Anne Green

kentuckiense

henryi

Whitlow

1992

Kristi Lyn

pubescens

henryi

Keisling

2003

x landonii

parviflorum

favillianum

Lisbeth

Gisela

calceolus

Döpper

2004

Lois

kentuckiense

taiwanianum

Robinson

2003

Lucy Pinkepank

kentuckiense

tibeticum

Pinkepank

1998

Maria

parviflorum

speciosum

Frosch

1991

Memoria Gerd Kohls

calceolus

henryi

Lowland Biotech

1995

Michael

macranthos

henryi

Frosch

1998

Otto

calceolus

pubescens

Frosch

1991

Patrick Pinkepank

planipetalum

tibeticum

Pinkepank

1998

Philipp

kentuckiense

macranthos

Frosch

1997

Pixi

calceolus

tibeticum

Corkhill

2003

Princess

reginae

lichiangense

Whitlow

1995

Prof. Karl Robatsch

reginae

acaule

Raschun

2004

Promises

formosanum

acaule

Whitlow

1988

Rascal

kentuckiense

parviflorum

Whitlow

1990

Robin Lee

farreri

kentuckiense

Keisling

2000

Sabine

fasciolatum

macranthos

Frosch

2002

Sandra M

macranthos

yatabeanum

Maier

2004

Sebastian

parviflorum

montanum

Frosch

1998

Sunny

fasciolatum

calceolus

Frosch

2004

Tanja Pinkepank

rebunense

calceolus

Pinkepank

1998

Tower Hill

pubescens

speciosum

Keisling

2003

Ulla Silkens

reginae

flavum

Malmgren

1996

Ulli

pubescens

cordigerum

Frosch

1994

Ursel

fasciolatum

henryi

Frosch

2003

Uta

fasciolatum

froschii

Frosch

2004

x ventricosum

calceolus

macranthos

Swartz

1800

x wenqingiae

farreri

tibeticum

Perner

1998

Werner

candidum

yatabeanum

Whitlow

1993

Werner Frosch

henryi

hotei

Manthey

2003

 

pubescens

kentuckiense

 

calceolus

shanxiense