Where did I get the plant from:
I did get the plant in 1999 from an old friend P.C.O. Nørgaard , whom got it from Count Zeppelin (don't ask me how and when?).

Short description of the plant:
Plant: short stem, with one large rosette and two small rosettes started from the rhizomes. Leaves: gray green, rather stiff with a narrow white edge, with few fibers 40 cm long and 8 mm wide around the middle of the leaves. Inflorescence: glabrous, 50 cm high, racemose. Scape 35 cm starting from between the leaves. Flowers: pendulous (bell shaped) greenish white, 6 to 7 cm long in a narrow panicle. Fruit gray-green, large 42 mm thick and 75 mm long. Seeds not know at the time of writing!

Where do I grow the plant:
I grow it in a large pot which is stored inside the unheated greenhouse in the winter.

Hardiness:
I have not grown the plant for long and since it probably is more than 40 years old I will not try it in the open garden but will continue to cultivate in a large pot which is stored inside the unheated greenhouse in the winter.

Other notes:
In the summer of 2003 I tried to pollinate the flowers with pollen from a lot of different Yuccas:

#1461 Yucca glauca X #818 Yucca 'Bright Edge', 3 flowers pollinated = 0 fruit (3 aborted, one of these were 11 days before it aborted!?)
#1461 Yucca glauca X #1465A Yucca filamentosa,  4 flowers pollinated = 0 fruits. (4 aborted, two of these were 11 days before they aborted!?)
#1461 Yucca glauca X #1402 Yucca filamentosa ?  (beautiful tall form from Dr. Lorek in Germany), 4 flowers pollinated = 2 fruits, (2 aborted)
#1461 Yucca glauca X #332 Yucca filamentosa 3 flowers pollinated = 1 fruit?  (2 aborted)
#1461 Yucca glauca X #49 Yucca flaccida, 6 flowers pollinated = 1 fruits (5 aborted, four of these were 11 to 12 days before they aborted!?)
#1461 Yucca glauca X #1582 Yucca 'Ivory', 2 flowers pollinated = 0 fruit (2 aborted)
#1461 Yucca glauca X #500 Yucca sp. Hybrid?, 3 flowers pollinated = 0 fruit  (3 aborted)

I also used the pollen from this plant to pollinate the following:

#818 Yucca 'Bright Edge' X #1461 Yucca glauca, 10 flowers pollinated, = 9 fruits (1 aborted)
#1465A Yucca filamentosa X #1461 Yucca glauca, 6 flowers pollinated = 5 fruits (1 aborted).
#1465B Yucca filamentosa X #1461 Yucca glauca, 2 flowers pollinated = 2 fruits.
#1402 Yucca filamentosa ? (beautiful tall form from Dr. Lorek in Germany) X #1461 Yucca glauca, 8 flowers pollinated = 6 fruits! (2 aborted).
#332 Yucca filamentosa X #1461 Yucca glauca, 12 flowers pollinated = 6 fruits. (6 aborted)
#49 Yucca flaccida X #1461 Yucca glauca, 14 flowers pollinated = 11 fruits (3 aborted) This hybrid will probably be quite like a hybrid made by Graebner in 1899, which is know as Yucca 'Karlsruhensis' and was described in 1903.
#1582 Yucca 'Ivory'? X #1461 Yucca glauca, 6 flowers pollinated = 2 fruits (4 aborted)
#500 Yucca sp. Hybrid? X #1461 Yucca glauca, 13 flowers pollinated = 9 fruits (4 aborted)

As you can see is the Yucca glauca pollen very good and it is compatible with all the plants that it was tried on. The pollen from #332 Yucca filamentosa was not easy to collect and also not very good pollen? It looks like that the flowers of Yucca glauca, may have needed more pollinium, as many of the fruits aborted when they were 10-12 days old, and it looked like they didn't have had pollen enough to pollinate the lower part of the fruit, so it shrunk and led to abortion.

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Fruits on Yucca glauca (BMJ #1461)
Photo from August 17th and 18th 2003.
Copyright ©2003-2005 Benny Moeller Jensen

I look very much forward to see the outcome of all the new hybrids, but I do not expect flowers in the new hybrid until 2010 at the earliest!
More details of the Yucca hybrids made in 2003.