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Ponderosa Pine Bonsai Discussion / A beauty from Cho -
« Last post by mossmoon on Yesterday at 10:42 AM »
Getting a real beauty from Alvaro! Potential for this tree is amazing. He says it's about 300 years old. Collected March 2016. When it arrives, it'll go straight to the greenhouse...
Ponderosa Pine Bonsai Discussion / Re: Cricket on my Ponderosa
« Last post by snipologist on February 13, 2017, 11:38 AM »
Just to be technically correct its a katydid which is a relative of the true crickets. 
Evergreen Bonsai Discussion / Re: Mugo pine dying buds
« Last post by twigboy2000 on February 03, 2017, 03:39 PM »
Here's a little update on this guy.

We had a very hot and very dry summer/fall in GA last year.  I think we were at drought conditions for part of the year.  I ended up moving this guy under some shade cloth and it seemed to do a little bit better.  All in all, I think I lost maybe 10% of the branch tips.

This year the plan is to just water and feed and not mess with it too much until I see noticeable vigor.  Then maybe I'll work some of the leggy branches back in and approach graft some buds closer in to the trunk.

Thanks for the interest,
General Bonsai Discussion / Re: How is Root Pruning Possible?
« Last post by geoffhobson on February 01, 2017, 10:03 AM »
It does depend on the age of the tree. Old larch should never be re pottd once bud has burst, broken pot excepted of course.
It also depnds on root disturbance.
General Bonsai Discussion / Re: Cliff rose and alligator Juniper
« Last post by Potawatomi13 on January 27, 2017, 01:54 AM »
What arcina said.  Get him to collect for you as he is a pro ;D.
General Bonsai Discussion / Re: How is Root Pruning Possible?
« Last post by Potawatomi13 on January 27, 2017, 01:50 AM »
Larch exception to:  "If you re pot a Larch after the buds have burst then you could well lose the tree"

In about 1959 when much younger wanted a couple young trees by roadside.  Uncle pulled up 2 young Ponderosas and one young Larch.  It was September.  All survived until about 1990. Soil was regular red roadside dirt so some root damage was done.  Is possible to imagine Larches "could" be repotted at sub optimal time and survive.
General Bonsai Discussion / Re: How is Root Pruning Possible?
« Last post by 0soyoung on January 27, 2017, 12:22 AM »
If there is curiosity, grow for a season in a glass bowl/pot. cover the edges so the suns rays do not affect the roots, and observe the changes that occur.
I did give this a try. I potted some trees in clear plastic orchid pots and made grids that I glued to them, intending to count root crossings of grid lines as a measure. I did this with 8 Dougleas firs, 8 lodgepole pines, 4 zelkova serratas, 4 Eastern redbuds, and 4 cork oaks. I diligently counted root crossings of grid lines every two weeks. I even attempted recounting as many as three times every time I did counts, in order to asses my repeatability with counting.

My personal issues were overwhelming. I had huge problems with repeatability. I had intended to just count new white roots, but I could not consistently decide if this was the extent of 'white' or if it was 'over there'. Unfortunately roots don't abruptly change from white to brown. Then, lighting conditions when I made the counts also had an influence. Sometimes I could see darkish roots on bright sunny days that I couldn't/didn't see on overcast ones. In brief, I came to appreciate why academic researchers use cameras and digital image analyzers to accomplish this.

I could have given this another try last year, but frankly, I've lost interest. I've found a number of scholarly papers that detail there being a strong surge in root growth in the spring. After the summer solstice, roots again grow, but more steadily.

So, currently I think there is a surge in root growth in advance of the rapid growth above ground - roots powered up to support the impending top-side growth. Hence, roots will recover quickly from pruning damage (I've certainly overdone spring root pruning and either killed the tree or spent most of the season nursing it along). Just after the summer solstice, the rate of bole thickening of all species I tested peaks. I believe that this means auxin and photosynthates are now available so that roots are able to recover from pruning. As far as my experiment material is concerned, I continue to repot half of each in spring and half in July/Aug and can see no difference in the two groups.

Otherwise, I continue to repot my maples and other deciduous species (angiosperms) in spring and my conifers (gymnosperms) in Aug/Sep. It nicely balances my work load (a strange term to be attached to a hobby, huh?). I remain curious about the topic, but my aims are to make bonsai. It is my hobby. I'm not really interested in finding funding for my one-man horticultural research institute  :D.
North American Juniper Bonsai Discussion / Re: Collecting Ashe Juniper
« Last post by GaryEdwards on January 25, 2017, 09:38 AM »
Any follow ups on this species of Juniper since these posts were made some years ago?
General Bonsai Discussion / Re: How is Root Pruning Possible?
« Last post by akeppler on January 23, 2017, 11:55 PM »
It seems that many "old world trees" seem to take to repotting in the summer or most anytime really while "new world trees", (after the last Ice Age) seem to like spring only?

Any thoughts.
Evergreen Bonsai Discussion / Re: Mugo pine dying buds
« Last post by scereghino on January 16, 2017, 10:19 AM »
Any update? I have been thinking about this and my guess is you don't get a lot of cold weather in Georgia. The Swiss Alps are very cold. esp up high where the mugos grow. I remember it being -10°F in town. It can be humid in the summers in the Alps but winds do dry out the peaks a little.
So my guess/assumption is the tree is not getting its natural winterization.
I have heard many folks repot in the late summer, I do so in the spring, more lime late winter (March) here in California.  My reasoning is we have 100°F days in Aug and Sept with little humidity. But...... I am also super cautious and only root prune 20% at a time.
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