Jeffersonia

[Hoy]

That is something to crave!

[Joseph]

Fascinating discussion and photos! I look forward to updates on these seed projects. Though out of season, here are some photos of J. dubia. They were taken this past spring at Hantaek Botanical Garden, an hour or two southwest of Seoul.

[McDonough]

Fascinating discussion and photos! I look forward to updates on these seed projects. Though out of season, here are some photos of J. dubia. They were taken this past spring at Hantaek Botanical Garden, an hour or two southwest of Seoul.

Gorgeous Jeffersonia clumps there.  Do you have more photos of Korean plants to share with us on the forum sometime?  During the winter months, or any time for that matter, it is perfectly fine to show plants not current with the date of posting.  Do you grow both Jeffersonia species in Tennessee?  I'm sure J. diphylla is native where you are, have you found much variation in this species?

[Hoy]

Fascinating discussion and photos! I look forward to updates on these seed projects. Though out of season, here are some photos of J. dubia. They were taken this past spring at Hantaek Botanical Garden, an hour or two southwest of Seoul.

This is exactly what I want in my garden. How do I accomplish that??

And I join Mark, I am ready to digest more pictures from Korea.

[McDonough]

This is exactly what I want in my garden. How do I accomplish that??

And I join Mark, I am ready to digest more pictures from Korea.

Trond, I believe the seed is ephemeral and needs moist packing.  I sent seed to people in the UK (small moist packed), I could send some next year in the spring 2011 harvest, but you'll have to remind me.

[Hoy]

This is exactly what I want in my garden. How do I accomplish that??

And I join Mark, I am ready to digest more pictures from Korea.

Trond, I believe the seed is ephemeral and needs moist packing.  I sent seed to people in the UK (small moist packed), I could send some next year in the spring 2011 harvest, but you'll have to remind me.

Very kind of you, Mark. I don't think I'll forget to remind you!

[Joseph]

I do have more photos of plants in Korea, both in cultivation and the wild. I'll make a few posts along those lines.

Trond, I know that the botanical garden is irrigated and watered regularly, and also the Korean peninsula is under the influence of summer monsoon, which means plenty of moisture during some of the hottest months. Presumably even when the plants' vegetative growth is dormant they benefit from not drying out completely. Other than that I don't know, but they are propagated from local/native stock so that probably helps too.

Mark, I only have J. diphylla at present, though it is certainly not because I don't want to grow J. dubia! It's just pure laziness or a lack of making it a priority.   It's among several 'must haves' that I should make a priority very soon. J. diphylla grows near the garden naturally, and my plants are sourced from those colonies. I haven't given much attention to variation but will make a point to look closer next spring.

[Paul T]

Stunning clumps of Jeffersonia everyone.  I grow both dubia and diphylla here, but haven't had the guts to try them out in the ground much yet as they're so rare here.  I've had a few flowers on the dubia and only a single flower so far on diphylla.  I hope to one day flower them well as a clump, but in my climate I think I am probably going to battle to do it.  Thank you all so much for the wonderful pics.

[Gene Mirro]

If anyone can spare some fresh seed of J. dubia, I would love to grow some.  Please send me a personal message.  Thanks.

[McDonough]

If anyone can spare some fresh seed of J. dubia, I would love to grow some.  Please send me a personal message.  Thanks.

Hi Gene, I'd be happy to send you some when they're ready.  The seed is ephemeral and should be sown shortly after the late spring harvest.  But if you depend on me remembering to send seed, it'll probably never happen, so feel free to send me a reminder message to me in late May to early June.  I also recommend putting your Jeffersonia dubia seed request in the Plant and Seed Swap topic, that way it won't be lost among a general topic
http://nargs.org/smf/index.php?board=70.0

[cohan]

Really nice looking plants! Not a genus I've seen much of--just the occasional mention on the forums, but after seeing Joseph's pics from Korea, I had to go back and look at the whole thread..
I'm curious to see which species Lori is growing?

[McDonough]

Depending on one's taxonomic outlook, there are only two species, American J. dyphylla and Asian J. dubia.  However, the name of the Asian species was changed to the ugly name of Plagiorhegma dubium  (sounds like a skin disease), leaving Jeffersonia and Plagiorhegma each as monotypic genera.

[RickR]

the name of the Asian species was changed to the ugly name of Plagiorhegma dubium

Not liking that. 

I guess that shows that our attempted (now generic) crosses all the less likely...

[McDonough]

the name of the Asian species was changed to the ugly name of Plagiorhegma dubium

Not liking that. 

I guess that shows that our attempted (now generic) crosses all the less likely...

According to Darrell Probst, the cross between the two species if perfectly possible, and has been done, but I know of no particulars.  These plants may not care about the human-imposed nomenclature genus shift.  Time will tell

[Lori S.]

I'm curious to see which species Lori is growing?

I have a couple of Jeffersonia dubia but (the plant formerly known as  ) J. diphylla is also hardy here.  I thought I had acquired it once but it turned out I'd bought another J. dubia. (Doh!)

EDIT:  Ooops, I got that backwards... it's J. dubia that I will have to relabel in all my records!