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Larix kaempfei leaf shape question

19 years ago

I was looking at some Larches today at a nursery and noticed Kaempfei (4' tall). It's leaves were short, radial and very flat along the stem. The stem looked like it was covered with little green rosettes. Very unlike the other larches they had (decidua & laricina) or pics I can find.

In reading up on the plant, nobody mentions the fact that the leaves radiate very differently than other larches. I did find this reference: "They are spirally arranged on long shoots, to 6 cm long and 2 mm wide. On short shoots they are spirally arranged in radial clusters of 20-35, linear".

Does this mean that the leaves I am looking at are a kind of juvenile form that is found on short branches, and that the shape will change as the tree gets larger? Or is the difference in leaf arrangement just due to growing conditions this summer?

Comments (13)

  • 19 years ago

    I'd guess either a cultivar selected for leaves like that, or possibly stunted due to being in a pot (assuming it was!). Normally, the leaves are very similar to those of other larches.

    Resin

  • 19 years ago

    It was in a pot, but had no variety name on it. The root ball looked good and not overgrown.

  • 19 years ago

    will snap some pix later...

    i have 2 pendula [1 kaempheri, 1 decidua] .. that took a beating in the heat and drought this year .... lost a lot of needles [but the growth tips NEVER SLOWED DOWN].. and reflushed.. with little rosettes as you call them .. right along the trunk/branch ....

    do you recall any other browned needles???? .... or any other signs of weather related stress??

    ken

  • 19 years ago

    I went back today to have a closer look and snap some pics. Most of the trees look like the first pic. One tree, at the very top there was some more normal looking growth - second pic.

    Must be due to the growing conditions. Maybe these were potted up last winter?

    Yesterday when I first say them I even had a discussion with the nursery employee about how unusual they looked. they gave me the impression all Japanese Larch look like pic #1. But they are no confier experts - just the local nursery.

  • 19 years ago

    The leaves in pic #1 are stunted for some reason or other; I've seen this before with pot-bound plants, so that's the most likely cause. They should be as long as the ones in the second pic.

    Resin

  • 19 years ago

    i was told by this group .. that kaempheri and decidua are mixed in the trade ... pointing out that of the two pendula i have.. i have one of each ... both burned this year .. on irrigation ... here is pix of my decidua ...with my new camera ... not quite the best i hope to be able to do ...

    all the new rosettes are on old wood ... and are a second flush ... i checked my kaempferi 'diana' ... and they are there also ...

    it does not appear that there are rosettes on new growth ...

    i hope you can see how much they have grown this year.. regard of a little sun scald.. for lack of a better term ...

    please forgive the typos.. i don't have time to check all the Latin ... ken

    {{gwi:831214}}
    {{gwi:831215}}
    {{gwi:831216}}

  • 19 years ago

    The leaves in the second picture are also from a branch that is/was actively growing (this season) and the leaves in the first picture are growing on a branch from a previous season's growth - that's why the pattern of the leaves is different in the two pictures. Current season's growth has leaves coming off of the stem individually and previous seasons growth has leaves coming off of the branch in a whorled pattern.
    Mike

  • 19 years ago

    do any of you have any ideas why there was leaf loss during a heat wave of 90 to 100 F ... for 6 weeks with relatively low humidity .... and total drought of natural rain???

    i would rule out drought ... since the irrigation and mulch allowed the hosta in the bed to survive rather nicely ...

    are there special humidity needs of these larix?? ... or maybe the unnatural torture of a ground hugging pendulous tree into an upright???

    give me your best guess ...

    thanks

    ken

  • 19 years ago

    Here is a pic of my Larix kaempferi 'Pendula'. This pic was taken today. Both this and my 'Diane' are just starting to color-up for the season.

    I have not had any problems with this tree and the summer heat. This tree was a fresh (low) graft in 1997 and was put into the ground in 1998 or 1999. There is a copper pipe holding the tree in place.
    Mike

  • 19 years ago

    Hey Ken,
    Sorry, I just read your post with the pics and you had already said what I said. I guess that will teach me to read all of the posts before posting. (:o)
    Mike

  • 19 years ago

    hey tree lover.. i figured it out.. lol ..

    i thought you were referring to my pix.. and being rude .. then i figured out you were talking about the prior pix.. and just making observation ... and that your responses.. actually did apply to my pix ... go figure on that ...

    thank god... i learned a long time ago... the hard way ... that flaming someones post... for perceived injury .. isn't really worth the time to type it .. that lesson has saved me so often.. i cant even count .. lol

    you ALL have a great day

    ken

    PS: you have the same retaining wall around your L pendula.. that i do.. now that is weird ....

  • 19 years ago

    Hi Ken,
    No, sorry, I'm not that kind of person. Please don't ever think that I am being nasty or rude in my posts. If you ever get that feeling from one of my posts, it's just because of my poor wording or not re-reading my words well enough prior to submitting the post.

    That's one of the drawbacks to posting in a forum, you can't see facial expressions, etc. and a post that might seem nasty, may not have meant to be nasty at all.

    The wall-thing is weird. I am thinking of removing the wall to enlarge the beds so I can plant more and more (the yard is still a work in progress - it's taken me a couple of years looking at it, in a shambles, to finally decide what I want to do.)
    Take care and thanks,
    Mike

  • 19 years ago

    Thats an interesting weeping larch I should get one
    larches should be grown more they are very good for
    Autumn colour.