Yucca 'Karlsruhensis type 2' x rostrata, a Jensen hybrid

[Benny, Northern Denmark]

Hello this hybrid Yucca 'Karlsruhensis type 2' x rostrata, has the same pollen parent as the 4 plants of Yucca filamentosa x rostrata hybrid in Tim's garden.




It's planted inside an unheated greenhouse.

Another clone were planted outside a year later, but the first 2 winters it froze back to the ground. The tiny rosette survived the winter of 2012-13 and looks like this now:




You will find more photos of the two here: http://www.bennyskaktus.dk/yucca-hybrid ... -2084.html

The seed parent for this hybrid did I received as "Yucca Karlsruhensis tyoe, Zagreb botanical garden". This plant could be either a F2 hybrid or another clone of the original cross by Graebner. We really need to ask the Zagreb botanical garden for more information.

Have a nice weekend

Benny

[TimMAz6]

Hi Benny,

your Yucca could pass as a filamentosa x rostrata.........very similar in appearance.

What's your most favorite hybrid?

[Henoh_Croatia]

The seed parent for this hybrid did I received as "Yucca Karlsruhensis tyoe, Zagreb botanical garden". This plant could be either a F2 hybrid or another clone of the original cross by Graebner. We really need to ask the Zagreb botanical garden for more information.

Have a nice weekend

Benny

Hello Benny,

I live in Zagreb/Sesvete/ and I relatively often visited botanical garden. I can't recall that I ever see Y. Karlsruhensis in their collection.

Best regards,

Mario

[Benny, Northern Denmark]

Hello Mario,

Thanks for your interest.

It is possible, that the botanical garden in Zagreb do not have this plant in cultivation anymore. The nursery friend whom I inherited my plant from 10 years ago, might have grown this Yucca for 40 years or probably even since before WWII. So this makes it even more difficult to verify, than finding any Rusanov hybrids.

Best wishes

Benny

[Benny, Northern Denmark]

Tim,

Yes, your Yucca filamentosa x rostrata are quite similar, I think the only difference is, that the leaves on yours are more rigid, a little shorter and a little wider.

Do there in this forum exist a current topic with "My favorite Yucca"? If not I will start one up with that topic.

But for now I can show you a photo of one of my favorites:

It's a hybrid made by Janakidisz, Hungary Yucca Janakidisz hybrid aloifolia x baileyi

This is how it looked in June 2010:


And this is how it looked on August 12th. 2013:


It is difficult believe that such a small plant, can grow so much in only 3 years and 2 months!

Have a nice weekend.

Benny[/img]

[TimMAz6]

Yes Benny that Y. aloifolia x baileyi is a beauty. It reminds me of Y. 'aloifolia x stricta' x baccata.....I think that is the hybrid I have. But in my climate it does not perform as well as other climates. For some reason many of the western Yuccas perform very poorly in my climate.....it's not the cold as they slowly die over many years.

I must say your Y. filamentosa x rostratas are my favorite as they look great all year. Many Yuccas will look very nice in August/September but may look poorly in winter and spring (like Y. filata 'big mama'........it looks amazing when in 'full glory' but looks nothing special after winter).

Please make a new thread on 'my favorite Yucca' as I will go through my garden too and post my favorites.

[Henoh_Croatia]

Hello Mario,

Thanks for your interest.

It is possible, that the botanical garden in Zagreb do not have this plant in cultivation anymore. The nursery friend whom I inherited my plant from 10 years ago, might have grown this Yucca for 40 years or probably even since before WWII. So this makes it even more difficult to verify, than finding any Rusanov hybrids.

Best wishes

Benny

Hello Benny.

I found this Yucca's in semi-shady area in Zagreb botanical garden with no tags. Maybe is this losted Yucca Karlsruhensis 'type 2'? There is more same looking Yuccas close to this two specimens.

[Benny, Northern Denmark]

Hello Mario,

Thanks for showing us your fine find at Zagreb botanical garden. Yes, this plant could be identical with the plant I grow as Yucca Karlsruhensis Type 2, but only if the plant in the photo is grown in shade, while it's missing the quite distinctive red bracts, otherwise it's very much identical.

Here is a photo with the



It would be very interesting to get access to old files of the botanical garden, their old index plantarum especially, to see what information there is about yucca.

Here you will find my notes on this plant:

http://www.bennyskaktus.dk/1454.html

Again, thanks for the info.

Have a nice day

Benny