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21-Jul-2005
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#1 |
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bonsaiTALK Expert
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Japanese White Pine Question
Hi,
I have a question do all JWP needles always have a medium green color with that characteristic white line or are there variants. I have a Japanese White pine that looks like the above, but I also have another whose needles are a somewhat lighter green color almost similar to Japanese Red  ine needles and can't really see the whitish line, yet is in unmistakeably a 5 needle and I have been assured that it is indeed a JWP.So are there variations/cultivars of JWP that have these characteristics because I am as usual a bit confused. Thanks..... P.S. The pine I am referring to is not a grafted white pine and is at least 25 or more years old, pretty beefy trunk, if that helps. Not sure if graft versus non graft affects that at all. Last edited by mushashi : 21-Jul-2005 at 01:03 AM. |
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21-Jul-2005
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#2 |
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bonsaiTALK Expert
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There are a number of cultivars of Japanese White Pines. True cultivars are maintained through grafting but it doesn't mean there isn't variation in seed grown trees. I own an 'eiko nishiki' which is a grafted corking bark JWP with very blue needles. I also have a nursery grown JWP which has bluish needles. I have several younger JWPs all of which have varying shades of green needles. One is almost yellowish and not dead
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21-Jul-2005
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#3 |
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Arborial tendencies
 
Join Date: Feb-2004
Country: UK
Posts: 389
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JWP will also change its needle colour in varying light situations.
I find full sun gives a more green/yellow whereas in a shady spot the needles take on a more green/blue hue.
__________________
Where theres a will theres a way |
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21-Jul-2005
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#4 |
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bonsaiTALK Expert
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Wow interesting.
You can see that this tree is obviously a JWP, but the other I have has blue green needles with white stripe it is a graft on JBP. This one which I have only had at this location a VERY short time has the yelowish green color and I really can't discern the whitish line. However, there is a fair amount of back budding occurring, so it must be healthy. Thanks for the tips By the way, a little bit off the topic but I noticed on my grafted JWP. a small segment of newer growth(branch) at the side end of a branch that appears to be dead or dying. The rest of the branch appears fine. The growth in this segment has wilted and is drying. Should I just snip that piece off right now, or wait a bit and see what happens. It is a very small relatively new growth. It kinda bugs me because the rest of the tree is so vibrant but I guess it happens. This tree needs some thinning anyway(too bushy) but I hate when things even little ones go south! Thanks for the input..... Last edited by mushashi : 21-Jul-2005 at 03:36 PM. |
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22-Jul-2005
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#5 |
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bonsaiTALK ArchMaster
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The reason for the graft is to cultivate the White Pine species that have the stomatic lines and the blue color. Most JWPs tend a bit more to the yellow green when grown in full sun and the bluish color in more shaded areas as you have been told. There are a number of cultivars which are all grafted with the exception of the Zuishio which grows well from cuttings. However the Zuishio does not seem to be in cultivation in the West to any extent, in the USA it is doubtful we will see any more of them due to new restrictions on Japanese and Chinese plant improtation. The most common you will find in the nursery trade is know as Glauca. It is a grafted tree and not commonly found under six foot tall around here in Michigan.
If you grow from seed there is no telling what you will come up with. You can order seeds from various sources but there is no gurantee where the seeds came from originally or from what stock. The attrition rate is high so if you go this way don't be dissappointed. |
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