Re: Yucca 'constricta x filamentosa' x 'filata'
No I have unfortunately not yet got them, Jost could not make a trip up here in the fall 2011. I hope, that it works later this year, for him to visit again. I have seen photos of the plants, they are OK at Jost place :-)
I will hold my thumbs for your pods with Yucca flaccida x baccata, that will indeed be a very interesting hybrid.
Yesterday we did transplant some Yucca (aloifolia x elata) x baccata seedlings sown last year. It's a Hungarian hybrid made by Demeter Janakidiz, it will porobaly not be hardy up here in the garden, so we have planted one in the bed inside the greenhouse. It would be interesting to cross this one with one of my glauca hybrids.
Your Yucca (constricta x filamentosa) x '('Bright Edge' x glauca) would be very hardy plants I think, the pollen donor is very strong in all kind of weather, wet winters, winters with bare frost, snowy winters and wet snowy winters. Also it grow well despite our cold growing season. This year only 3 maybe 5 days above 25C and most of the time below 20C! Today it will be sunny and up to almost 20C but with UV index of 6.7, that's very high UV for Denmark, so wee need to be careful in the sun, also here in the north.
The seeds I got of your Yucca (constricta x filamentosa) x '('Bright Edge' x glauca) has not yet germinated, but so far there are 2 seeds germinated of the F:2 Yucca "Big Mama", but it's only 10 days since they were sown, so much can happen in next week :-) Yucca gloriosa is always weak to germinate, and yes, it usually takes weeks before anything happens - if anything happens :-(. I'm not really sure why the germination rate so low for Yucca gloriosa. I am wondering if we need to use GA3 to trick them into germination.
Here is a photo of a "dwarf form" to your huge inflorescens, but the form is still quite Yucca elata. It's a my #2001A Yucca "Karlsruhensis type 2" x elata.
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