Juniperus - Questions to the experts

[my nellie]

This tree shows some kind of whitish "dust" on foliage at the tips of two branches.
The same happened in the past, almost two months ago... and I thought some kind of powder like flour has been spilled over those branches and I cleaned the foliage with my hands.
But now it comes again. and I am worried this time!
I attach some photos but I'm unsure if you can understand what is there...


I have shaken the foliage and tiny granules like fine talc powder have fallen of.
and if I rub them they disappear.

Do you have any idea what it might be?
I have already used preventive spray on all my trees during last December.

Thank you in advance!

 

[my nellie]

Hello!
Anyone coming forward for help...???

 

[Brian Van Fleet]

Pix are blurry. Are they pollen cones?
http://pollen.utulsa.edu/Juniperus-images/Phenology.html

 

[my nellie]

@Brian Van Fleet Thank you for your interest.
I apologize for the crappy mobile phone photos.... I will try and take some new photos with my camera tomorrow.
Yes, there are lots of pollen cones on the tree which are seen in the photo as bulges of mustard like color.
Those whitish speckles are the "infected" tips dusted with the white dirt on top of them.

 

[my nellie]

These are the new photos... a little better but again... no much help I suspect...


Do they "tell" you anything Brian @Brian Van Fleet ?
Oso, perhaps they "speak" to you @0soyoung ?
Thanks anyway!

 

[0soyoung]

These are the new photos... a little better but again... no much help I suspect...
View attachment 173888 View attachment 173889

Do they "tell" you anything Brian @Brian Van Fleet ?
Oso, perhaps they "speak" to you @0soyoung ?
Thanks anyway!

I see strobili = pollen cones.
My little shimpaku is covered with them (only on the thread ends, of course), just like in your pix.

 

[drew33998]

Could be pitch which is a natural thing for junipers to do on the tips. At least that was what RN was showing as an example on one of his trees he recently did on his live stream

 

[my nellie]

I see strobili = pollen cones.
My little shimpaku is covered with them (only on the thread ends, of course), just like in your pix.

Apart from pollen cones there is a whitish "dust" like substance on the foliage.
Thank you for your response, Oso!

 

[my nellie]

Could be pitch which is a natural thing for junipers to do on the tips. At least that was what RN was showing as an example on one of his trees he recently did on his live stream

Hello drew.
I searched on the internet but could not find anything results like "pitch on junipers' foliage"
Do you mind sharing some description when you feel like having the time, please.
Or perhaps could you share a link to the video of RN (if it's free I mean...)
Thank you!

 

[petegreg]

Alexandra, you can try to tap the cones with your finger to check if the dust doesn't come from cones - pollen. I can see this happening on my junies and hinokis almost every spring, but I'm not an expert.

 

[sorce]

"speak" to you

Never seen it....

But it feels like the repot, and cone formation, my have it saving a little energy abandoning that new tip growth.

Cuz some seem too light....yellowish.
You can see the dog hair and no mite webs.
And thats the history we know.

Seems healthy all behind the tips so it seems you can get in front of whatever it IS.

Sorce

 

[my nellie]

The problem persists and slowly expanding to one more nearby branch tip....
The colour of affected foliage is changing and turns yellowish, too.

So I decided to spray some insecticide/acaricide treatment two days ago.

Moreover I intend to cut off the affected tips and shorten these branches back to healthy foliage.
What are your thoughts?

 

[my nellie]

I thought I should update on this "ailment" for anyone who might experience the same problem...
I have used the above mentioned combination insecticide/acaricide twice (10 days interval in between) and the problem looks like resolved.
I didn't cut affected blanchlets/foliage.

 

[Rose Mary]

my shimpaku has these tips which ended up having little black seeds? I saved some and have wondered if they would grow but havent actually tried yet.

 

[my nellie]

@Rose Mary it's worth trying!
I think you need to learn about stratification...
If you make a search here, I'm sure you will find all the info you need!

 

[my nellie]

@Adair M What should be the time interval between 1st and 2nd half bare root repotting?
I know.... it depends...... but what is a general suggestion of yours on this subject?
Thank you in advance!

 

[Adair M]

@Adair M What should be the time interval between 1st and 2nd half bare root repotting?
I know.... it depends...... but what is a general suggestion of yours on this subject?
Thank you in advance!

A year, maybe two. Depending...

 

[my nellie]

Thank you so much, Sir @Adair M !

 

[sorce]

little black seeds

Seeds?

I was under the impression they all came from berries.
Though I never have seen a Shimp with a berry.

Sorce

 

[sparklemotion]

These are the new photos... a little better but again... no much help I suspect...
View attachment 173888 View attachment 173889

Do they "tell" you anything Brian @Brian Van Fleet ?
Oso, perhaps they "speak" to you @0soyoung ?
Thanks anyway!

Did you ever figure this on out, @my nellie ? Could it be that thing where plants will transpire "salty" water and get white spots when the water evaporates?