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delayed growth on spruce graft

Posted by sluice z6a CO (My Page) on
Sat, Jun 7, 14 at 16:57

Here is a time progression of a grafted scion with delayed growth.

The scion was grafted in February 2011, and developed no new foliage in spring 2011 or spring 2012.

I had almost written it off, until an advantageous bud appeared in summer 2012.

Picea pungens 'Nagykoros', June 12, 2012
nagyzoros june 12, 2012 photo P6122749.jpg

 photo dc81104f-e09f-4b26-ab5b-61ecba0340f2.jpg

Here is the bud on August 11, 2012
nagyzoros august 11, 2012 photo P8115149.jpg

 photo 6781a8bf-42bf-412e-a328-ff0fcf3fba79.jpg

The next spring, on May 23, 2013, it appeared as if the bud was about to develop into a new shoot.
nagyzoros may 23, 2013 photo P5237934.jpg

Here is the bud on June 25, 2013. Something strange is going on.
nagyzoros june 25, 2013 photo P6258959.jpg

 photo 4a843eb3-9fb7-4847-b8d2-b427d2600a87.jpg

July 8, 2013
nagyzoros july 8, 2013 photo P7089363.jpg

August 17, 2013, it appears as if new buds are developing on top of the existing bud.
nagyzoros august 17, 2013 photo P8130217.jpg

 photo 00bb9f2c-448d-462b-a8e4-a4dc207ed543.jpg

November 2, 2013
nagyzoros november 2, 2013 photo PB020253.jpg

March 9, 2014
nagyzoros march 9, 2014 photo P3091555.jpg

May 6, 2014
nagyzoros may 6, 2014 photo P5064509.jpg

 photo b7135345-d216-4fb5-8acc-94b11d1be19f.jpg

May 17, 2014
nagyzoros may 17, 2014 photo P5175390.jpg

May 24, 2014
nagyzoros may 24, 2014 photo e1a380f7-28b6-4beb-8559-47f95e567b7a.jpg

June 7, 2014
 photo 0b1e0c56-74cd-48d4-9331-0c449140a48f.jpg

This post was edited by sluice on Sat, Jun 7, 14 at 17:05


Follow-Up Postings:

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RE: delayed growth on spruce graft

Wow incredible, and so well caught for documentation of the phenomenon.

1) A graft need not push, as long as the needles are healthy and retained.
2) A bud can appear the next year from elsewhere than the previous growth points. But not push - again.
3) It then acts as the axis for several buds to push from it.

Fascinating and well worth knowing that this delayed capabilty exists at least in picea. Life finds a way.


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RE: delayed growth on spruce graft

Thank you very much for that, Nate. Great chronology.

So how long did the spider protect it (Aug 17, 2013)?

tj


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RE: delayed growth on spruce graft

  • Posted by Jarpe z4-z5 Finland (My Page) on
    Sun, Jun 8, 14 at 3:19

Yes! This is wonderful documentation. I admire your patience, Sluice!
This kind of cronological series of photos is something we all should do much more for both science and fun. I´m very inspired by this.


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RE: delayed growth on spruce graft

That thing wanted to live!

Dax


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RE: delayed growth on spruce graft

Thanks Severnside, TJ, Jari, and Dax!

TJ, I'll have another look, maybe the spider is still around there somewhere ;)


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RE: delayed growth on spruce graft

Just noticed these two new buds today on a P. pungens 'RM 258' scion that was grafted in February 2011. Hopefully they will develop into shoots in spring 2015!
 photo a13728a8-2f7c-49ba-8106-083a34c6b447.jpg


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RE: delayed growth on spruce graft

Now that would be delayed! So the needles are four years old? You are certainly showing some extremes of dormancy and reanimation.


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