Yucca update North-West Croatia

Henoh_Croatia · Post by **Henoh_Croatia** » Tue Sep 02, 2014 1:43 am

Here's link to old topic for comparison viewtopic.php?t=4689

Henoh_Croatia · Post by **Henoh_Croatia** » Tue Sep 02, 2014 1:45 am

Y.aloifolia

Y. gloriosa

Henoh_Croatia · Post by **Henoh_Croatia** » Tue Sep 02, 2014 1:51 am

From left to the right Y. recurvifolia, Y. filamentosa 'Bright Edge', Y. recurvifolia, Y. gloriosa, Y. glauca, Y. gloriosa v.

Y. flaccida/filamentosa complex

Henoh_Croatia · Post by **Henoh_Croatia** » Tue Sep 02, 2014 2:19 am

Yucca glauca MG 1985.72 - Platte Co, Wyo.

#2 Yucca glauca MG 1985.72 - Platte Co, Wyo.

Yucca brevifolia v. v jaegeriana MG 1982.9-Meadview, AZ (left) right Yucca torreyi MG 2001.6 - Redford, TX,

Henoh_Croatia · Post by **Henoh_Croatia** » Tue Sep 02, 2014 2:31 am

Yucca rupicola MG, 1999.5 - Ozona, Tx,is turn to be Yucca reverchoni?

#2

#3

Yucca baccata MG 1980.4 - Los Alamos, NM.

#2

Yucca elata, White Sands, NM.

Yucca neomexicana, MG 1997.81- JRT251, Cimmeron Co, OK

Henoh_Croatia · Post by **Henoh_Croatia** » Tue Sep 02, 2014 2:39 am

Yucca campestris, MG 1982.916-campestris, Snyder, TX,

Yucca palida, MG 1997.82 - Coryell Co, TX

Yucca arizonica MG 1979.9 - Nogales, AZ

Yucca brevifolia v jaegeriana MG 1982.9- Meadview, AZ

Yucca thompsoniana MG 2001.34 - Alpine, Tx

Henoh_Croatia · Post by **Henoh_Croatia** » Tue Sep 02, 2014 3:11 am

Yucca gloriosa Wrightsville NC (I got seed from Tim Behan. Seed collected by Don of North Carolina). Thank you Tim.

Y. gloriosa 'White Shed' (thank you Tim)

Tim Behan spontaneous hybrid created by moths Y. filata Big Mama x Y. reverchonii-thompsoniana. Leaves is much more like reverchoni-thompsoniana so I exclude Y. rupicola for possible pollen donor (thank you Tim).

#2 from same seed batch

Henoh_Croatia · Post by **Henoh_Croatia** » Tue Sep 02, 2014 3:26 am

Yucca coahuilensis MG „1982.98-coahuilense, El Indio, TX MG 1982.98“. Do not look like Y.coahuilensis. Any idea what it is?

Yucca constricta. I got seed from Janko. Thank you Janko.

Yucca filamentosa x Y. rostrata. I got these seedling from Janci (Janko). Who made this cross? I need information for my data base. Thank you Janko.

Yucca 'Elena' (glauca x angustissima toftiae) made by Sascha Svatek & Uwe Hass. I got year ago seed from Janko. Thank you Janko.

#2

Unusual Yucca

Thank you for looking!

janci · Post by **janci** » Tue Sep 02, 2014 10:15 pm

Hello Mario
fascinating garden

DesertZone · Post by **DesertZone** » Fri Sep 05, 2014 8:12 am

fantastic garden! A wonderful bunch of yuccas and plants!

marceli · Post by **marceli** » Fri Sep 05, 2014 10:53 pm

Such a collection of yuccas! Looking great

Edmar · Post by **Edmar** » Tue Sep 09, 2014 6:38 am

Wow! lots of yuccas in many places! congrats Mario

Benny, Northern Denmark · Tue Sep 09, 2014 11:27 pm

Hello Mario,

Congratulation with your number 200 posting to this forum

Your garden and your large collection of palms and Yuccas are indeed very fine. It looks as you have a perfect climate for Yuccas & Co. I really like the dried out creek layout, I have something like your creek planned for our garden, and now that I see how well it looks, I must have made a dried out creek in our garden too.

How cold does it get in the winter in your garden? And how long is the growing season?

Best wishes

Benny

Henoh_Croatia · Post by **Henoh_Croatia** » Wed Sep 10, 2014 1:00 pm

Thank you guys for all your comments!

Benny,

Here we have kind of continental climate with a very mild maritime influence. This is good climate for eastern US Yuccas (Y.gloriosa/recurvifolia, Y.filamentosa/flaccida). Y. aloifolias thrive but in case of very harsh winters they freeze to the ground and resprout from rhizomes. I also tried Y. carnerosana without success. They regularly freeze to the ground and resprout in spring. T.fortunei is marginal in my garden (cca 20-30km east from Zagreb) but at Zagreb heat islands there are many of adult trees. Usually we have dry and hot summers, unfortunately this summer is unusual wet. I already lost all my Opuntia basilaris, and many Opuntia fragilis and few Yucca hybrids (seedlings) with western species gens. Growing season starts from middle of March and prolongs to the middle of October, sometimes even to the early November. Winter minimums usually ranges from -18 to -12. Summer highs ranges from 30- 35, and year ago up to 40 Celsius.

In the meantime I got the answer from staff at Zagreb botanical garden. Unfortunately they don't have any records about Yuccas prior to 1950. From 1950ies onward they did not have the Y x karlsruhensis. Picture of Yucca that I already posted on this forum from that garden is recorded just like Yucca sp. I assume it is some form of Yucca flaccida.

Best regards,

Mario

Benny, Northern Denmark · Thu Sep 11, 2014 5:14 am

Hello Mario,

Thanks for the climate info. Your winters are somewhat like those we have here in Northern Denmark, but the humididty is probably much lower, here it's usually around 80-95 % most of the year, except in very rare cold winters when the wind is blowing from North East or East, in such times it might as low as 40% humidity. Your summers are however about 10 degrees warmer than ours and your growing season is 2-2½ months longer. This year we a very early start of the growing season maybe 3 weeks earlier and during the summer we had a few days just above 30C for the first time in maybe 40 years, and we have had many days above 25C. In the southern part of Denmark they get bout 4C warmer all year, but we have much more sunshine and maybe only the ½ rain.
Yes, Opuntia basilaris is tricky, I have killed MANY, I can't grow it up here, not even in the unheated greenhouse, I think, it's because of the humidity in the air. Yucca aloifolia doesn't work either, not even in the unheated greenhouse. I have a friend on the Danish isle Samsø, he has a large Yucca aloifolia in his unheated greenhouse, it's a plant which I have sown and this late summer it was blooming for the first time. So as in your area just a short distance can make a big difference in microclimate.

Many thanks for the information from Zagreb Botanical garden. The plant I grow as Yucca Karlsruhensis type 2, is indeed very much like a dwarfform of a Yucca flaccida, small in flower and in the leaves. But it has much shorter rhizomes and much fewer rhizomes growing from the plant. And that it looks very much the same as the one you have showed photos of under the trees in Zagreb Botanical garden..
What I suppose did happen is that the plantsman P.C.O. Nørgaard, Erslev, Mors, Denmark (1917-2003) got a plant from Zagreb some time in the early 50's, I would guess, maybe via a gardener he knew in Halle, Eastern Germany. But this is all speculations, and in P.C.O Nørgaards scarce files, which I received him in 2000 or inherited in 2003 after his death, I have not found any written information about any of his Yucca plants. And much have happened in Zagreb from 1899 to 1950, so anything is possible.

Enough for now, have a nice evening.

Benny