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Author Topic: Large particle pumice for new ponderosa  (Read 6904 times)

MatsuBonsai

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Re: Large particle pumice for new ponderosa
« Reply #15 on: October 04, 2011, 08:20 PM »
Quote from: coh on October 04, 2011, 05:43 PM
... is from a collected spruce that I picked up at Natures Way Nursery this spring (tree is originally from Oregon, don't know who collected it).

Does Jim get those from Randy Knight?
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coh

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Re: Large particle pumice for new ponderosa
« Reply #16 on: October 04, 2011, 09:24 PM »
I went back and looked at my notes...apparently Jim (Doyle) told me the tree was from Colorado, so I'm not sure why I thought it was Oregon! It's an Englemann Spruce, don't even know if they are found in Oregon. Anyway, Jim has so many collected trees from out west, some are probably from Randy Knight but you'd have to check with him to be certain.

Chris

Edited to add - Bob, thanks for those links. I'll take a look at them when I get the time. You're probably right about it not being important enough to ship across country, especially since the pumice and lava rock are so similar. In fact, if the true definition of pumice is based on its density relative to water being < 1, then most of the "pumice" I have isn't really pumice at all...
« Last Edit: October 04, 2011, 09:40 PM by coh »
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cbobgo

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Re: Large particle pumice for new ponderosa
« Reply #17 on: October 04, 2011, 09:35 PM »
Randy actually collects the trees in Colorado then brings them back to Oregon.

- bob
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coh

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Re: Large particle pumice for new ponderosa
« Reply #18 on: October 04, 2011, 09:41 PM »
Ah ha - now we're getting somewhere!  :) Does he also collect in Oregon and other places?

Chris
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cbobgo

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Re: Large particle pumice for new ponderosa
« Reply #19 on: October 04, 2011, 10:04 PM »
I know that Jason who was working with him previously did collecting more locally in Oregon and Washington, but I don't know if Randy does as well.  And I don't think Jason has been working there for awhile.  It was back in '08 I think when I was last there.

- bob
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John Kirby

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Re: Large particle pumice for new ponderosa
« Reply #20 on: October 05, 2011, 08:37 AM »
Jason has moved on to Dirt track/off road Motorcycles and was dispersing his collection of trees a tear or so ago. I think the transition came when Ryan came back from Kimura's and is working with randy on a number of projects/ventures.

Randy seems to colelct from a number of sites in the west, Colorado and Wyoming being two of the states he goes to. I wouldn't be surprised if he poked around in a number of states with National Forest and/or BLM lands.
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mcpesq817

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Re: Large particle pumice for new ponderosa
« Reply #21 on: October 05, 2011, 12:59 PM »
Quote from: coh on October 04, 2011, 05:43 PM
The reason I'm interested in this topic - the spruce will most likely be repotted in the spring, and I will probably want to put it back into pumice or the equivalent for a couple more years. Since I haven't been able to find the larger size pumice locally, I'm wondering if what I have can be "extended" with the lava rock, which I can get in the same size...or if I should look for larger particle size "pumice", like what WeeTree appears to have available.

Chris

That's sorta the line of questions I had as well with my ponderosa.  I may repot my ponderosa next spring, and of course won't bare root the entire tree.  But, I'm wondering about mixing smaller sized particles (whatever they are) with the larger sized pumice the tree is currently in that I don't end up clearing out.
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cbobgo

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Re: Large particle pumice for new ponderosa
« Reply #22 on: October 05, 2011, 02:12 PM »
Quote from: mcpesq817 on October 05, 2011, 12:59 PM
Quote from: coh on October 04, 2011, 05:43 PM
The reason I'm interested in this topic - the spruce will most likely be repotted in the spring, and I will probably want to put it back into pumice or the equivalent for a couple more years. Since I haven't been able to find the larger size pumice locally, I'm wondering if what I have can be "extended" with the lava rock, which I can get in the same size...or if I should look for larger particle size "pumice", like what WeeTree appears to have available.

Chris

That's sorta the line of questions I had as well with my ponderosa.  I may repot my ponderosa next spring, and of course won't bare root the entire tree.  But, I'm wondering about mixing smaller sized particles (whatever they are) with the larger sized pumice the tree is currently in that I don't end up clearing out.

That's what I've been doing with mine - when I repot them I use a mix of the old pumice with new lava (scoria) and they seem to be doing fine.

- bob
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mcpesq817

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Re: Large particle pumice for new ponderosa
« Reply #23 on: October 05, 2011, 04:42 PM »
Quote from: cbobgo on October 05, 2011, 02:12 PM
Quote from: mcpesq817 on October 05, 2011, 12:59 PM
Quote from: coh on October 04, 2011, 05:43 PM
The reason I'm interested in this topic - the spruce will most likely be repotted in the spring, and I will probably want to put it back into pumice or the equivalent for a couple more years. Since I haven't been able to find the larger size pumice locally, I'm wondering if what I have can be "extended" with the lava rock, which I can get in the same size...or if I should look for larger particle size "pumice", like what WeeTree appears to have available.

Chris

That's sorta the line of questions I had as well with my ponderosa.  I may repot my ponderosa next spring, and of course won't bare root the entire tree.  But, I'm wondering about mixing smaller sized particles (whatever they are) with the larger sized pumice the tree is currently in that I don't end up clearing out.

That's what I've been doing with mine - when I repot them I use a mix of the old pumice with new lava (scoria) and they seem to be doing fine.

- bob


Hi Bob,

Is the particle size the same between the two types of soils?  One concern I have is that the components I usually get are smaller than the pumice the tree is in currently.  So, since I won't be completely barerooting, one third to one half of the pot will be one size while the remainder is another.
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cbobgo

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Re: Large particle pumice for new ponderosa
« Reply #24 on: October 05, 2011, 06:56 PM »
I get 5/16 red lava, which is maybe a little bit smaller than the pumice, but I don't think it is a large difference.  I'll pull out my calipers when I get home.   ;)

An no one has commented on all my great research into the differences between scoria and pumice  :'(

- bob
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Treebeard55

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Re: Large particle pumice for new ponderosa
« Reply #25 on: October 18, 2011, 06:01 PM »
Quote from: cbobgo on October 04, 2011, 07:09 PM
...
So there may be some differences.  Enough to justify the shipping cost across the country?  Probably not. 

- bob

What you said. Thanks for the links, tho; interesting to know more about the materials we work with. (Never know when it will come in handy.)
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