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Repotting young cork bark black pines

March 3, 2015 by Jonas Dupuich

Repotting recently grafted young pines is just like repotting non-grafted pines, only additional care is taken to avoid damaging the union.

Repotting corkbark black pine

Grafted cork bark black pine

Repotting corkbark black pine

After removing the pot

Note the white spot – there are signs of root adelgid infestation. For those curious to see how mycorrhiza differs in appearance from adelgid infestation, see below.

Mycorrhiza

Mycorrhiza – and lots of it

Simply coming out the roots cleared away most of the affected area so I didn’t spray pesticides to address the adelgids.

Repotting corkbark black pine

After combing out the roots

I planted the pine in a colander.

Repotting corkbark black pine

Nestling the tree onto a mound of soil.

Once the tree was in place, I tied it in and added more soil. Using chopsticks, I worked the new soil in between the roots.

Repotting corkbark black pine

Before chopstick work

Repotting corkbark black pine

After chopstick work – notice the level of the soil has dropped

I then added soil to fill the pot and tamped it into place.

Repotting corkbark black pine

Repotting complete

 

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Filed Under: Bonsai Development Tagged With: Black Pine, Corkbark Black Pine, Grafting

Previous Post: « Cork bark black pine from graft – follow up
Next Post: Too much of a good thing »

Reader Interactions

Comments

  1. Alex V says

    March 4, 2015 at 7:03 am

    Jonas – I have been enjoying the development postings! I am curious about how much work was done on the roots when you repotted. I know cork bark pines aren’t quite as dependent on a good nebari as other pines, but it still seems like a good time to examine the roots. However, from the pictures, it isn’t clear if you left the roots mostly as a ball or combed them out.

    Thanks again for the great posts!

    • Jonas Dupuich says

      March 4, 2015 at 12:31 pm

      Hi Alex! Corkbarks are more sensitive to root work than black pines, though at this early stage I don’t know whether the trees behave more like cork bark or non-cork bark pines. I didn’t do much root work to encourage as much growth as possible. I’ll look to do more root work the next time I repot.

      If I had more of these I’d do more root work on half to see how each group does.

  2. Alex V says

    March 5, 2015 at 5:36 am

    I had suspected there was a reason, thanks!

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