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Stimulating new buds on cork oak

June 21, 2016 by Jonas Dupuich

My recent posts on cork oaks feature trees that were removed from the ground this past winter. The goal for those trees is to simply get healthy and develop strong roots so they can withstand further work next year.

The cork oak below was removed from the ground in 2015 – one year earlier. The tree is strong but lacks branches low on the trunk.

Cork oak – 18 months out of the ground

Cork oak typically sprout buds where they are cut. Here are two examples of this where branches were cut when the tree was dug.

Two branches emerging below the cut

Five branches emerging below a cut

To stimulate lower branches, I removed the long, straight portion of the trunk.

After shortening the trunk

I’ll let the remaining branches run for the time being but will wire them so they develop some movement close to the trunk. I’m not sure if I’ll use these branches or not at this point, but I do know that I need a new leader which will require time to develop.

I also have a feeling the angle of the trunk will change during the next repotting. I don’t like it when the trunk emerges straight up from the soil. By tilting the tree to the left, I can create movement and get a better idea of where I want the future branches to emerge.

Tilted to the left

That’s it for the time being. I’ll continue to feed the tree heavily this year in hopes of stimulating new branches and will work with what I get when it’s time for the next round of improvements.

✕

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Filed Under: Bonsai Development Tagged With: Cork Oak

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Reader Interactions

Comments

  1. Patricia T. says

    June 21, 2016 at 9:03 am

    What is your go-to fertilizer in this stage of the trees’ development? And your fertilizer schedule? Thank you. Patricia in Upstate NY

    • Jonas Dupuich says

      June 21, 2016 at 9:22 am

      Hi Patricia – I use the same approach to fertilizer that I use on other trees in the garden. My go-to choices are cottonseed meal and fish emulsion, though I’m always experimenting with other fertilizers. The cottonseed meal stays on the tree so it gets some food with every watering, and I use fish emulsion up to once a week. Here are some other posts on the topic: https://bonsaitonight.com/?s=fertilizer

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