Author Topic: Ponderosa Pine with Progressive Needle Cast  (Read 3870 times)

Chrisl

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Ponderosa Pine with Progressive Needle Cast
« on: September 15, 2011, 11:48 AM »
Hi, I picked up a PP from Andy Smith this August, and it had a mild case of Needle Cast.  I used a spreader surfactant with Daconil just about every week, but the disease keeps spreading to new needles.  I don't want to loose this tree, it's my pride and joy really even though I haven't touched it lol  Anyone with any ideas?  I have a copper fungicide too but from what I gathered, it's only for prevention not active treatment.  Any help would be very greatly appreciated!! 
 

Dave Murphy

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Re: Ponderosa Pine with Progressive Needle Cast
« Reply #1 on: September 15, 2011, 01:45 PM »
We really need pictures to help you...the problem may not be needle cast at all.  It would also help knowing what type of soil the tree is in, how often it is watered, fertilized, etc.
 

reddog

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Re: Ponderosa Pine with Progressive Needle Cast
« Reply #2 on: September 15, 2011, 01:52 PM »
Hi, I picked up a PP from Andy Smith this August, and it had a mild case of Needle Cast.  I used a spreader surfactant with Daconil just about every week, but the disease keeps spreading to new needles.  I don't want to loose this tree, it's my pride and joy really even though I haven't touched it lol  Anyone with any ideas?  I have a copper fungicide too but from what I gathered, it's only for prevention not active treatment.  Any help would be very greatly appreciated!! 

What did Andy say about the needle cast?
 

Treebeard55

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Re: Ponderosa Pine with Progressive Needle Cast
« Reply #3 on: September 15, 2011, 03:58 PM »
Dave has a good point: pictures would help.

Hope this tree pulls thru for you! I know what it is to lose a yamadori ponderosa that is one's "pride and joy."
 

bwaynef

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Re: Ponderosa Pine with Progressive Needle Cast
« Reply #4 on: September 15, 2011, 04:24 PM »
What did Andy say about the needle cast?

That'd be my approach to getting this one solved too.
 

Chrisl

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Re: Ponderosa Pine with Progressive Needle Cast
« Reply #5 on: September 15, 2011, 06:34 PM »
I didn't see it till I got home so I didn't talk to Andy about it.  I don't have a macro lens, so these are the best I could get.  But you can see the black bands on the needles if you look close.
 

John Kirby

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Re: Ponderosa Pine with Progressive Needle Cast
« Reply #6 on: September 15, 2011, 08:01 PM »
I don't believe that is needle cast, it is at the tips, looks like the tree dried out.
 

Chrisl

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Re: Ponderosa Pine with Progressive Needle Cast
« Reply #7 on: September 15, 2011, 08:24 PM »
John, you don't think those black bands are needle cast?? Seen quite well on image 1144.  It looks just like the pictures I've seen on the net.  And I showed the pictures to the curator of the bonsai collection at the Chicago Botanic Garden and he thought it was needle cast too.

That being said, I have been keeping the watering low/on the dry side, due to reading they don't tolerate wet roots well.  Plus, Andy has this planted in Turface and grit, so it drains real quick after watering.  On the other hand, I also read that overwatering can lead to brown tipped needles.  So, I'm a bit confused.  This is a hard topic to convey over the internet imo.  
« Last Edit: September 15, 2011, 08:26 PM by Chrisl »
 

John Kirby

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Re: Ponderosa Pine with Progressive Needle Cast
« Reply #8 on: September 15, 2011, 08:42 PM »
You are spraying periodically with Daconil, good. You need to keep the tree watered but not soggy. You have it in an open, airy, and sunny spot (as much as you can).  You are doing fine.
 

Chrisl

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Re: Ponderosa Pine with Progressive Needle Cast
« Reply #9 on: September 16, 2011, 11:22 AM »
Thanks John!  It's very nice to hear I'm not killing it ;))  I think I just need to get to know the watering requirements better on this PP.  I'll keep up on the Daconil, and, I'll keep it a bit wetter now; before I stuck my finger into the inorganic mix about 3" to check moisture levels.  I think I'll cut that down to 1-2".  I also moved it to a better location yesterday, getting more sun and air circulation.

 I also just this week changed my ferts from fish emulsion to 0-10-10 though I'm wondering if I'm doing this too soon?   The weather has been in the high 50s to low 60's and nightime has gone down to the 40s.  But this crazy weather here, we're supposed to get back up to the 70s for awhile.  (I lost a tropical cutting and my azalea last week when the weather went from 86 to 56 at night.  I'm not used to the weather here yet, so lesson learned)
« Last Edit: September 16, 2011, 11:42 AM by Chrisl »
 

Chrisl

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Re: Ponderosa Pine with Progressive Needle Cast
« Reply #10 on: September 19, 2011, 09:33 AM »
I emailed Andy and shot him a pic of the needles.  He wasn't sure it was needle cast as they don't have that pathogen out in SD.   He thought probable the brown needle tips were from underwatering too, or stress from being a newly transplanted collected tree.  Either way, incr. watering, and place in a sunny condition and "it'll be fine"....lol  Same advice from you John!  I feel much better now, so Thanks to everyone.
Chris