Author Topic: Growing Mikawa Japanese Black Pine from Seed  (Read 50646 times)

bretts

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Re: Growing Mikawa Japanese Black Pine from Seed
« Reply #15 on: April 04, 2010, 07:48 PM »
This is the 8 year old tree I worked on in the demo.

 

bwaynef

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Re: Growing Mikawa Japanese Black Pine from Seed
« Reply #16 on: June 03, 2010, 06:32 PM »
The jury is still out on the air-pots.  I'm not sure yet whether the extra cost for the air-pots is justifiable.  This week I will be concluding a three year long experiment to compare regular nursery pots, air-pots and pond baskets to see which one gave the best results with regards to root growth.  I have been growing JBP seedlings in these containers with the exact same soil, watering schedule and sunlight.  I'll post the results sometime next week.

How about that update?

(Excellent thread by the way.  I enjoyed re-reading it.)
 

cray13

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Re: Growing Mikawa Japanese Black Pine from Seed
« Reply #17 on: June 04, 2010, 05:50 AM »
Unfortunately I was so busy repotting this spring I ran out of time and never repotted my experimental trees.  I'll probably have to wait until Fall to repot them.  I'll try and at least post some pictures of the top growth tonight.  Based on what I see above the soil line after three years I'm beginning to think the air-pots offer no real advantages... we'll have to wait until I can get to the roots before I can come to any firm conclusion.
 

BONSAI_OUTLAW

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Re: Growing Mikawa Japanese Black Pine from Seed
« Reply #18 on: March 09, 2011, 01:10 AM »
Any updates on this great thread cray?
 

cray13

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Re: Growing Mikawa Japanese Black Pine from Seed
« Reply #19 on: March 09, 2011, 05:45 AM »
This weekend I'll be sowing this year's batch of JBP.  I'm also finally going to repot the "experimental" trees from my air-pot, pond basket and nursery container comparison.  I'll post images of the root systems from each.  I'll probably create a new thread for the results of the expirement. 
 

BONSAI_OUTLAW

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Re: Growing Mikawa Japanese Black Pine from Seed
« Reply #20 on: March 21, 2011, 09:59 PM »
Can't wait to see your findings Cray.
 

BONSAI_OUTLAW

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Re: Growing Mikawa Japanese Black Pine from Seed
« Reply #21 on: March 22, 2011, 09:05 PM »
You have inspired me.

I sowed about 35 JBP 'Mikawa' and 35 JBP 'Sanshu' and I plan on trying this root cutting technique to see if I can get the same results.  I am really looking forward to the JBP 'Sanshu.' 

So is anyone else going to try this this year?
« Last Edit: March 22, 2011, 09:55 PM by BONSAI_OUTLAW »
 

cray13

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Re: Growing Mikawa Japanese Black Pine from Seed
« Reply #22 on: March 23, 2011, 08:41 AM »
Awesome Outlaw!  Because of the warm weather we've been having I had to repot a lot of my deciduous pre-bonsai so I haven't had a chance to repot my "air-pot" experiment JBP yet.  I'm hoping to do that this weekend... I will post the results to a new thread. 

I'm patiently waiting for my mikawa to emerge... should be between 7-14 days after sowing.  I'm on day 10... and getting impatient.   ;D
 

specialkayme

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Re: Growing Mikawa Japanese Black Pine from Seed
« Reply #23 on: March 23, 2011, 09:28 AM »
This thread has also inspired me. I ordered some JBP, JRP, and JWP seeds to start off.

The package suggests to cold stratify all three, but this thread appears to show direct sowing. Is that right?

What I'm most nervous about is the "chopping off of roots" from the seedlings . . . I'm really afraid I'm going to screw that up.
 

cray13

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Re: Growing Mikawa Japanese Black Pine from Seed
« Reply #24 on: March 23, 2011, 09:40 AM »
I'm not sure about JRP and I tried JWP last year with ZERO results... I think a stratification period may be more important with JWP. 

However, you should have good luck with JBP with just sowing them without cold stratification.  Just be sure to soak them in water for at least 24 hours before you plant them.

 

BONSAI_OUTLAW

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Re: Growing Mikawa Japanese Black Pine from Seed
« Reply #25 on: March 23, 2011, 01:00 PM »
I agree on JWP needs cold stratification and that JBP does not.  I also agree that I have no idea about JRP. 
 

specialkayme

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Re: Growing Mikawa Japanese Black Pine from Seed
« Reply #26 on: March 23, 2011, 05:27 PM »
Awesome! Thanks everyone!

I already soaked all the seeds for 48 hours.

The JWP I put in some sterile damp peat moss, covered it in saran wrap, and put it on my shelf. The package recommends that you warm stratify for 60 days, then cold stratify for 90 days.

The JRP I divided into two groups. One group I sowed directly, and the other I put in saran wrap with sterile peat moss and put it in the fridge for 60 days. The group that I sowed directly, I placed in seed starter soil, in a small container, and put that container in a zip lock bag with a few air holes in it and placed it outside.

The JBP I divided into two groups, just like the JRP, but after reading your comments I guess I can go ahead and pull those out of the fridge :)

Thanks again everyone!
 

pwk5017

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Re: Growing Mikawa Japanese Black Pine from Seed
« Reply #27 on: June 04, 2011, 01:03 AM »
I have only sown JRP twice, but I have treated them exactly as I treat JBP.  I soak in warm water for 2 days and sow in mid March(Pittsburgh).  I have had great % both times using these methods.  I will note that both years I grew JRP, I had alot more fungal issues with the JRP compared to the JBP.  Not sure what to make of that.
 

cray13

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Re: Growing Mikawa Japanese Black Pine from Seed
« Reply #28 on: June 22, 2011, 04:30 PM »
Thanks for taking the time to start such a detailed post. 

My biggest question involves the timing of the cutting of the seedlings. You say "Once
all of the stems have turned violet/purple its time to root prune and transplant."  Do you have any pics of the stems that are that color. 

I've just planted some pine seeds and at sprouting the stems are already violet - pink.
I'll check back through my images and see if I can find a good one that captures the color I was describing.  When they first sprout they'll be green with a tinge of pink/ light pink at the soil line.  It's usually 4-6 weeks before they turn a deep purple/violet color.  So, wait at least 4 weeks from the time they emerged from the soil and then inspect the color... it should be obvious. 


A little late, but pwk5017 posted an image of exactly what you're looking for with regards to when the seedlings are ready for their first root pruning. 

I've attached the image:




 

cray13

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Re: Growing Mikawa Japanese Black Pine from Seed
« Reply #29 on: June 26, 2011, 08:23 AM »
The jury is still out on the air-pots.  I'm not sure yet whether the extra cost for the air-pots is justifiable.  This week I will be concluding a three year long experiment to compare regular nursery pots, air-pots and pond baskets to see which one gave the best results with regards to root growth.  I have been growing JBP seedlings in these containers with the exact same soil, watering schedule and sunlight.  I'll post the results sometime next week.

How about that update?

(Excellent thread by the way.  I enjoyed re-reading it.)

OK... I've posted the results of my Air Pot experiment.  Although any conclusions drawn should be taken with a grain of salt.

Check it out HERE