Author Topic: Juvenile --> Mature foliage  (Read 4459 times)

paulpash

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Juvenile --> Mature foliage
« on: December 30, 2012, 07:00 PM »
Hi,

I cut back this Juniper which initially had all scale foliage last season to try & gradually prepare it for refining this year. However, the foliage (about 85%) of it has regrown as the spiky juvenile variety.

What's the best way to proceed with this tree to restore the finer mature foliage given that undue stress was (probably) the cause? I guess I have a few options:

1. Cut back the tree again in one session, removing most of the juvenile foliage. This may trigger yet more juvenile growth in Spring as the tree still feels 'stressed' at having a foliage / root imbalance.

2.  Do no 1 in stages ... only removing the juvenile foliage in smaller amounts through the growing season when I am sure the tree is producing mature foliage. Removing less foliage may not stress the tree as much

3. Leave the tree to rest another year to accumulate more foliage mass. Maybe wire out the branches & twigs as needed.

What do you guys think is the best approach (or do you have another)?

Thanks
 

John Kirby

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Re: Juvenile --> Mature foliage
« Reply #1 on: December 30, 2012, 07:22 PM »
I would suggest leaving it alone, then next summer pruning juvenile foliage back to wood, and thus mature foliage as available. I am assuming the roots are good, etc. oh yeah, welcome
 

paulpash

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Re: Juvenile --> Mature foliage
« Reply #2 on: December 30, 2012, 07:28 PM »
Thanks John .. I have been lurking a while  ;D

Eventually I will need to shari the trunk as there is an ugly 'beak' branch jutting out that I have since cut back (it was the sacrifice that extended 3 feet).

 

paulpash

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Re: Juvenile --> Mature foliage
« Reply #3 on: December 30, 2012, 07:41 PM »
I haven't touched the roots as yet. It's in traditional potting compost at the moment. The roots are sound and I don't want to disturb them and introduce yet another stressor.
 

paulpash

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Re: Juvenile --> Mature foliage
« Reply #4 on: December 30, 2012, 07:45 PM »
This is the first branch - i don't want the inner few threads of mature foliage to get really weak so it will take me ages to re grow a branch structure but i'd say 80% of the foliage on this branch is spiky / juvenile  >:( :(
 

Chrisl

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Re: Juvenile --> Mature foliage
« Reply #5 on: December 31, 2012, 11:05 AM »
I agree with John, let it grow out and prune back.  But I'd get it out of that soil in spring.  JMO ;)
 

boon

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Re: Juvenile --> Mature foliage
« Reply #6 on: December 31, 2012, 12:18 PM »
my order of things to do is
to repot first.  make sure the root grow well for a year  and the tree is healthy  -  a lot of long shoots (i call it runner)
then select branches - if you cut more than 50% there is more chance the tree will go into stress and foliage change into juvenile growth -needle like.  it mens it is stress.  let it grow until it turn back to scale before working again.  it may take one or 2 years under good condition.  -good root - good location - good fertilizer.
pls be patient - do not rush  you will benefit more

 

paulpash

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Re: Juvenile --> Mature foliage
« Reply #7 on: December 31, 2012, 02:39 PM »
Thank you for the replies. I have repotted the tree into free draining aggregate, combing out about 75% of the soil it was in before (a mix of mainly peat based potting compost and garden loam from where it was lifted from the ground). Shall I feed it heavily (in April when it needs fertiliser) or is that going to prompt more juvenile foliage too?

Leave off the pruning next year?
 

boon

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Re: Juvenile --> Mature foliage
« Reply #8 on: December 31, 2012, 04:49 PM »
Thank you for the replies. I have repotted the tree into free draining aggregate, combing out about 75% of the soil it was in before (a mix of mainly peat based potting compost and garden loam from where it was lifted from the ground). Shall I feed it heavily (in April when it needs fertiliser) or is that going to prompt more juvenile foliage too?

Leave off the pruning next year?

With that much root work, feeding heavy in April will probably kill the tree.
Feeding light and gradually increase in summer after you have a lot of runners
 

paulpash

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Re: Juvenile --> Mature foliage
« Reply #9 on: January 01, 2013, 11:43 AM »
Thanks Boon ... I have done some light wiring just to place secondary branches in better positions. I hope that it is OK to do some basic wiring.
 

Chrisl

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Re: Juvenile --> Mature foliage
« Reply #10 on: January 01, 2013, 12:07 PM »
The tree is stressed now, hence the juvenile growth, I wouldn't do anything else to the tree right now, incl. wiring.  Like Boon mentioned, just let it grow unchecked for 1-2 yrs to grow back out and get healthy. 
 

paulpash

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Re: Juvenile --> Mature foliage
« Reply #11 on: January 01, 2013, 12:31 PM »
I didn't actually cut any roots apart from obviously rotten ones (there were one or two that were black and exuded water when squeezed - they were brittle and snapped off so I cut them off cleanly with branch pruners). I tried to avoid cutting or disturbing as many of the tree's feeder roots as possible.