Yellow (tips only) needles on 2 pines

[Mike Corazzi]

These 2 shabby pix are the yellow tips on a mugo and a Scots pine.
The trees are doing fine except for this. Plenty of backbudding and new needles coming in bright green but the tips are yellow on these 2 trees.

Good draining soil, fertilized regularly with organic and starting with 0-10-10 for fall.

The Japanese Black Pines don't seem to have any yellow. Just these two.

Would chelated iron do any good?

Thanks.

Oh, I just looked and the JBPs seem to be afflicted too but almost microscopically. VERY little on the tips.

Heat maybe? We have had an OVEN this year.

 

[Mike Corazzi]

Ahh, I see. Didn't think of that.

 

[Wires_Guy_wires]

Combine heat with a little too much nutrients, and the softest parts of a leaf will burn. I think I remember that curling needles are a sign of 'well fed pines' as well.

It's not that much of an issue. But iron wouldn't help much in this case; the tips will not revert back to normal because they are dead or at least damaged.
It seems you've found the maximum nutrient application treshold for your trees. ;-)

In development it shouldn't matter much, since these needles will be replaced later on. Once you hit the refinement stage, you might want to tone it down a little. Not just because of the tips, but also to control growth a bit better.

 

[Mike Corazzi]

I am getting responses from the Netherlands.

 

[Wires_Guy_wires]

Yes, of course! Next to the hookers and weed, we do have pines.. Somewhere.

 

[Mike Corazzi]

Yes, of course! Next to the hookers and weed, we do have pines.. Somewhere.

Over here you can "get in DUTCH" with talk like that.

 

[Soldano666]

Hard to tell from your pics. My Mugo tips yellow up when they are over watered. Most stuff still in nursery soil acts like this one me.

 

[Mike Corazzi]

I..suspect .. that I DO water too much. Gotta start chopsticking.

 

[_#1_]

My "learner" mugo is doing the same right after I chopped half the root off and HBR, and thinned out the canopy by about half. It was done around the end of July. My watering schedule stayed the same though.

And not fertilized since the work.

Is it dying a slow death or something?

 

[Soldano666]

My "learner" mugo is doing the same right after I chopped half the root off and HBR, and thinned out the canopy by about half. It was done around the end of July. My watering schedule stayed the same though.

And not fertilized since the work.

Is it dying a slow death or something?

No. My guess is you removed foliage and the tree required less moisture uptake, and you kept watering daily. As long as it kept setting next year's buds I'd say your in the clear. But I'd start feeding again. Get those buds juicy for 2019

 

[Soldano666]

I did lots of hard cutbacks on a bunch of nursery stock this summer some 70%!!!. No root work and as a result of my auto water set up when I'm away on work, I experienced the same. Buds kept setting like a mofo tho.

 

[_#1_]

Thanks for the tip saldano!

Will start fert again this weekend.

 

[Vance Wood]

My "learner" mugo is doing the same right after I chopped half the root off and HBR, and thinned out the canopy by about half. It was done around the end of July. My watering schedule stayed the same though.

And not fertilized since the work.

Is it dying a slow death or something?
View attachment 211355

No; Mugos do this from time to time and seems to be quite normal in my experience.