Hello,

This topic is thought as a follow up on Horst tema "Schönes Pflänzchen, aber was isses?" Schönes Pflänzchen, aber was isses?

Hybrids with Yucca rupicola as one of the parents can be quite variable, some crosses have leaf edges with filaments, other have serrated leaves and some does "just" have smooth edges.

I have made some hybrids with Yucca rupicola as the pollen parent, so far all attempts to get a seed pod growing on the Yucca rupicola has failed for me.

In one case, two different seedpods of the same cross (Yucca "Karlsruhensis Type 2" x rupicola, BMJ #2373, #2374, #2375 & #2384.) made two very different Yuccas, as one of the pods has produced seedlings which is only half as wide as those from another seed pod.

Here is the list of hybrids I have made with Yucca rupicola as the pollen parent:

Yucca 'Bright Edge' x rupicola. Made by Benny M. Jensen, Denmark, in 2009, BMJ #2383.
Yucca filamentosa ssp. concava forma albo-variegata (834) X rupicola, Kerr Co., Texas (388B). Made by Benny M. Jensen, Denmark, in 2011, BMJ 2011-030.
Yucca (filamentosa/flaccida complex "#BMJ#500" x glauca (2007A)) X rupicola, Kerr Co.,Texas (388B). Made by Benny M. Jensen, Denmark, in 2011, BMJ 2011-049, BMJ 2011-050.
Yucca flaccida [forma glaucescens] (1766) X rupicola, Kerr Co.,Texas (388B). Made by Benny M. Jensen, Denmark, in 2011, BMJ 2011-061
Yucca (glauca x filamentosa/flaccida complex"#BMJ#1402" [big "blue" form] #1402 (1844E)) x rupicola, Kerr Co.,Texas (388B)). Made by Benny M. Jensen, Denmark, in 2011, BMJ 2011-043.
Yucca "Karlsruhensis Type 2" x rupicola. Made by Benny M. Jensen, Denmark, in 2009, BMJ #2373, #2374, #2375 & #2384.
Yucca ("Karlsruhensis Type 2" x hybrid #500 (1999A)) X rupicola, Kerr Co.,Texas (388B). Made by Benny M. Jensen, Denmark, in 2011, BMJ 2011-063.
Yucca sp. [gloriosa forma robusta] "Hæstrupvej" x rupicola (pollen from Thomas Stöckl, Austria), Made by Benny M. Jensen, Denmark, in 2010, BMJ 2010-037.

I'm not alone in making hybrids with Yucca rupicola, others also have had success with this parent:

Yucca filamentosa/flaccida complex x rupicola (fh 1179.92). Made by Michael Bechtold in 2009 MB 2009.02
Yucca (filamentosa x elata) Filata Bechtold #2 X rupicola (fh 1179.92). Michael Bechtold in 2009 MB 2009.21
Yucca (filamentosa x elata) Filata Bechtold #1 fh (1180.8icon_cool.gif X rupicola (fh 1179.92). Made by Michael Bechtold in 2009 MB 2009.09, MB 2009.10, MB 2009.11
Yucca pallida (fh 1178.17) x rupicola (fh 1179.92). Made by Michael Bechtold in 2009 MB 2009.25, MB 2009.26
Yucca rupicola (fh 1179.92) x pallida (fh 1178.17). Made by Michael Bechtold in 2009 MB 2009.31
Yucca rupicola (fh 1179.92) X (filamentosa x elata) Filata Bechtold #1 (fh 1180.8icon_cool.gif. Made by Michael Bechtold in 2009 MB 2009.27, MB 2009.28, MB 2009.29, MB 2009.30
Yucca rupicola x filamentosa-flaccida complex, made by C. Tembaak, Germany in 2010, 7 fruits.

and C. Tembaak did make seeds by pollinating the plant with it's own pollen:

Yucca rupicola x rupicola, pollinated with it's own pollen, made by C. Tembaak, Germany in 2010, 2 fruits.

If you, as I do, consider Yucca pallida for a leaf color variant of Yucca rupicola, there are many more hybrids:

Yucca arkansana [Oklahoma] x pallida [Watzer]. Made by Gerhard Gussmagg, Austria. (GG 023)
Yucca filamentosa/flaccida complex "Groß" ("High") x pallida [Haage]., Made by Gerhard Gussmagg, Austria in 2010, GG 010.2010.
Yucca filamentosa/flaccida complex "Steingarten" x pallida One fruit dropped to early, 275 seeds not in good condition. Made by Gerhard Gussmagg, Austria in 2010, GG 012.2010.
Yucca (filamentosa x elata) X pallida, Made By F.N. Rusanov in the years 1945 to 1959, at the botanical garden in Tashkent, USSR, now Republic of Uzbekistan.
Yucca (filamentosa x elata) X pallida (different seed-donor), Made By F.N. Rusanov in the years 1945 to 1959, at the botanical garden in Tashkent, USSR, now Republic of Uzbekistan.
Yucca (filamentosa x elata) Filata Bechtold #1 (fh 1180.8icon_cool.gif X pallida (fh 1178.17). Made by Michael Bechtold in 2009 MB 2009.08
Yucca (filamentosa x elata) "Filata", Grex RM-clone X pallida, Made by Christian Zolles, Austria in 2012, CZ006HY.
Yucca (filamentosa x elata) Filata Bechtold #1 fh (1180.8icon_cool.gif X rupicola (fh 1179.92). Made by Michael Bechtold in 2009 MB 2009.09, MB 2009.10, MB 2009.11
Yucca (filamentosa x baileyi ssp. intermedia) X pallida, Made By F.N. Rusanov in the years 1945 to 1959, at the botanical garden in Tashkent, USSR, now Republic of Uzbekistan.
Yucca flaccida x pallida, Made By F.N. Rusanov in the years 1945 to 1959, at the botanical garden in Tashkent, USSR, now Republic of Uzbekistan.
Yucca flaccida x pallida, Maybe Fritz Hochstätter 2007?
Yucca 'Golden Sword' x pallida [Haage]. Made by Gerhard Gussmagg, Austria in 2010, GG 014.2010.
Yucca louisianensis x pallida (fh 1178.17, Killeen Aera). Made by Michael Bechtold, Mannheim, Germany in 2010. 4 fruits with the numbers: MB 24.2010, MB 25.2010, MB 26.2010, MB 27.2010.
Yucca pallida [Watzer] x arkansana [Oklahoma]. Made by Gerhard Gussmagg, Austria. (GG 022)
Yucca pallida x filamentosa/flaccida-complex hybrid "Apfelbaum". Made by Gerhard Gussmagg, Austria in 2010, GG 017.2010.
Yucca pallida x filamentosa/flaccida-complex hybrid "groß" ("high") 100 seeds not in good condition. Made by Gerhard Gussmagg, Austria in 2010, GG 011.2010.
Yucca pallida x filamentosa/flaccida-complex hybrid "Steingarten" (*) (*) This Yucca gardenform in my old alpinum is very similar to Hybr. "groß". Made by Gerhard Gussmagg, Austria in 2010, GG 013.2010.
Yucca pallida x flaccida 'Golden Sword'. Made by Gerhard Gussmagg, Austria in 2010, GG 015.2010.
Yucca pallida (fh 1178.17) x rupicola (fh 1179.92). Made by Michael Bechtold in 2009 MB 2009.25, MB 2009.26
Yucca pallida [Haage] X xkarlsruhensis 120 seeds not in good condition. Made by Gerhard Gussmagg, Austria in 2010, GG 016.2010.
Yucca pallida [Haage] x filamentosa/flaccida-complex "Apfelbaum". Made by Gerhard Gussmagg, Austria. (GG 017)
Yucca pallida [Haage] x filamentosa/flaccida-complex "Groß" ("High"). Made byGerhard Gussmagg, Austria. (GG 011)
Yucca pallida [Haage] x filamentosa/flaccida-complex "Steingarten". Made by Gerhard Gussmagg, Austria. (GG 013)
Yucca pallida [Haage] x flaccida 'Golden Sword'. Made by Gerhard Gussmagg, Austria. (GG 015)
Yucca pallida [Haage] x filamentosa 'Color Guard' [Rene]. Made by Gerhard Gussmagg Austria. (GG 018)
Yucca pallida x 'Color Guard' (?) [Rene] I'm not surre if it's the real 'Colour Guard'. Made by Gerhard Gussmagg, Austria in 2010, GG 018.2010.
Yucca pallida (fh 1178.17) X (filamentosa x elata) Filata Bechtold #1 (fh 1180.8icon_cool.gif. Made by Michael Bechtold in 2009 Bechtold # MB 2009.22, MB 2009.23, MB 2009.24
Yucca pallida x reverchonii, Made by Christian Zolles, Austria in 2012, CZ001HY.
Yucca rupicola (fh 1179.92) x pallida (fh 1178.17). Made by Michael Bechtold in 2009 MB 2009.31
Yucca xkarlsruhensis x pallida [Watzer]. Made by Gerhard Gussmagg, Austria. (GG 020)

And Gerhard Gussmag have made pure Yucca pallida seeds:
Yucca pallida [Watzer] x pallida [Watzer]. Made by Gerhard Gussmagg, Austria. (GG 021)-

If I have missed a hybrid, please let me know.

When weather conditions are better, I will take some photos of the different rupicola hybrids we have in our garden and greenhouses, and post them here.

A few quick notes:

The seedlings of Yucca filamentosa ssp. concava forma albo-variegata (BMJ834) X rupicola, Kerr Co., Texas (BMJ388B). made in 2011, BMJ 2011-030. has quite wide and very wavy leaves and the leaf color is very dark green. Whereas the plants of Yucca 'Bright Edge' x rupicola. made in 2009, BMJ #2383, have bright green leaf color, which as young are twisting and wavy, very much like real Yucca rupicola, but as they grow bigger, they outgrow the wavy habit and become more strait, but still as other Yuccas twisting to one side, I can't remember if they are twisting to the left or right. Of course the seedlings of Yucca filamentosa ssp. concava forma albo-variegata (BMJ834) X rupicola, Kerr Co., Texas (BMJ388B) might also outgrow the wavy habit as they grow bigger (my plants are only 2 years old).

Best wishes

Benny

Hi Benny, you are the greatest 'Yuccaholic' from all of us,

what a great number of hybrids with Y. rupicola. I've only three hybrids from Michael. Here they are

MB 2009.28 rupicola fh 1179.92 x filata 1 fh 1180.88


MB 2009.21 filata 2 fh 1180.88 x rupicola fh 1179.92


MB 2009.10 filata 1 fh 1180.88 x rupicola fh 1179.92

Hello Horst,

I think my filata x rupicolas are quite similar to those of yours, but mine are probably smaller as usual :-).

I were remembering wrong it's the Yucca flaccida [f. glaucescense] x rupicola Kerr Co. which have very dark leaves and not the Yucca filamentosa ssp. concava albo-variegata x rupicola Kerr Co.

Here is a couple of photos of the two:

Below is two photos of to left a Yucca filamentosa ssp. concava albo-variegata x rupicola Kerr Co. and to the right a Yucca flaccida [f. glaucescense] x rupicola Kerr Co.

This is from August 22nd.:


And this is from yesterday October 25th.



They have grown very well in to months.

Have a nice Sunday

Benny

Hallo Benny,

bei deinen Sämlingen sind die Rupicola-Gene durch die breiten gedrehten Blätter gut zu erkennen.
Ich hab aber auch noch eine Rupicola-Hybride, leider ist sie durch die diesjährige Blüte stark ramponiert. Der Blütenstand war jedenfalls ein Traum. Es ist Y. rupicola x flaccida von Samy.
Der Blütenstand ist weitestgehend abgetrocknet


die Zweige sind allerdings noch grün, die Früchte ebenfalls.


deshalb lass ich sie auch noch hängen, die Früchte hängen komischerweise immer im Doppelpack


der Pollen stammt von meiner grünen Y. thompsoniana

Hello Horst,

That's some nice fat seed pods, they look very much like those from the Yucca filamentosa-flaccida complex.

Yes, many yuccas look horrible after they have bloomed. My Yucca rupicola is 2-3 years to start growing a new rosette! It bloomed in 2011, and I noticed a small sprout ten days ago, but it could also be from another Yucca growing close by it. I have felt at the rhizomes and they feel well, so it is alive.

Here is a photo of another hybrid with Yucca rupicola hybrid as the pollen parent Yucca 'Bright Edge' x rupicola Kerr Co. Texas, it's 2 years old:



Best wishes

Benny

Here is another photo of the same cross, a different seedling, it's about 4 years old:



And you can see, that the leaves has become more strait, but the rupicola genes are still very visible.

It has always been grown outside, and it has survived 4 winters with 50 to 100 cm of snow!

Have a nice day

Benny

Hello,

As I wrote earlier, can hybrids with Yucca rupicola as one of the parents be variable, In one of my hybrids, different seedpods of the same cross (Yucca "Karlsruhensis Type 2" x rupicola, BMJ #2373, #2374, #2375 & #2384.) made two very different Yuccas, as one of the 3 pods did produce seedlings which is much wider than those from the two other seed pods.

Here are is a photo of the narrow leafed form of the hybrid Yucca "Karlsruhensis_type_2"x rupicola (clone no. 2384A):

I will post photos of the from with wider leafs soon.

Take care.

Benny

P.S. Frost at ground level right now, and monday this week it was + 17C, very strange weather!

Hi Benny,

ich bin auch immer wieder erstaunt, wie unterschiedlich sich Hybriden der gleichen Kreuzung entwickeln können. Deshalb sollte man immer mindestens zwei Hybriden der gleichen Kreuzung auspflanzen.
Es ist ja nicht nur die Form des Blattes, auch die Wurzeln können unterschiedlich sein.

Yes Horst,

I also find the roots of hybrids very interesting, they are also a mix of genes, and it it's often quite easy to see which part of the roots is from which parent plant.

Here is a photo of the form of Yucca "Karlsruhensis_type_2"x rupicola (clone no. 2374C) with wider leaves:



Have a nice day.

Benny