black spots on juniper

my juniper has got black spots on its foliage!!the juniper was repotted a couple of weeks ago!!







does anyone know if this is a bug or a fungas??what is the best treatment??

Looks like a fungus to me but hold off with treatment until someone gives more specific diagnosis. Haven't seen this one before.

Has anyone seen this before?

Not me.

Nor me, sorry. Nina, heeeelp!

I haven't either...

Too small to be a type of black scales in early developement ?...

Maybe just dirt?

Notice how the spots are infecting juvenile growth and the juvenile growth is not a healthy color. Perhaps this is Phomopsis blight as described in the following PDF document:

http://www.utextension.utk.edu/publications/spfiles/SP277-B.pdf

I have seen this kind of spotting occur in places like home improvement garden centers in an enclosed greenhouse where there are overhead water misters and the environment becomes way too humid for junipers. For example, the greenhouse is set up to grow primarily tropicals year round but they bring in popular conifers for their spring sale. Guess what happens to those conifers who are not native to a wet tropical environment?

I'm kind of allergic to conifers in general so I'm not the best person to give advice on Phomopsis blight.

Good luck and hugs to Nina!
Geoline

Hi, i cannot offer any advice on the problem, on the contrary i am having a similar problem and i would like to ask if there is any remedy for it.
I haven't seen any bugs, scale, or black spots, and the trees tend to grow,but some new needle turn brown.

Help!

Hi, I have had these spots on my juniper for a year or more. I think it is a fungus and have tried fungus fighter but with no results, if you use a tooth brush gently they do come off.

I have that too on my juniper before but not knowing what exactly what it was.
I got rid of them by using a not so strong air jet blown them off from the leaves.

Good luck.

Stavros

If you are keeping your plants indoors that is the problem along with over watering and/or staying too wet.

The closest I have seen to the black spot were dead aphids. I don't know if aphids take after junipers, I've never had them on mine, but I've had them on crabapples. After I treated them with neem, the aphids will turn black after they die off.

Billy M. Rhodes wrote:Stavros

If you are keeping your plants indoors that is the problem along with over watering and/or staying too wet.

I have never kept any plant indoors. I use 80% (at least) inorganic substrate 3-6mm and it is almost impossible to overwater unless you sit the pot in a tray with water.
One of the things that can happen though is that due to constant high temperatures 38-45C (100-115F) and high humidity during late July-August the trees and plants shut down their systems (they go dormant) and they cannot absorb all the water from the pot. The potted substrate becomes overwatered even if is watered properly and it is also prone to fungal attack. In this case, the tips may "burn" and go brown, the tree may be underwatered because it cannot absorb water effectively and signs of overwatering may appear. This is my humble diagnosis......sorry but i have to find a cause and end up to a diagnosis with everything (my "professional" part of the brain takes over )

If I didn't know better (and I'm not sure even of that) those look like the little poo's left behind by thrips. But what would thrips want with a juniper?

It looks more like an insect than a fungus. Have you examined it under a magnifying glass? In England, of all places, there must be extension agents or some sort of horticultural resource. Contact Kew; they can probably refer you to somebody.
Hi, Geoline. Haven't heard from you in ages.
Iris