Copper sulfate question

[Figfriend]

When treating fig rust or anthracnose with copper sulfate, I’ve read that it should only be done when the tree is dormant. But, I cannot find anything that mentions the FREQUENCY OF APPLICATION ON POTTED TREES that overwinter in a garage. 
Everything I’ve found only recommends treating with copper sulfate WEEKLY FOR IN-GROUND TREES. 

Since I live in the north, my trees are all in pots. Does anyone know the frequency of copper sulfate  treatment for potted fig trees?

 

[MiaD]

Following along because I would like to know the answer also.

 

[ktrain]

I used to do it once a week unless it rained.
But we get rain for days sometimes, so it was kind of a hard battle to win.
I finally gave up and let nature take it's course.
They lose the leaves and then grow new ones.
It's usually near the end of our season where it hits the hardest anyway.

 

[Wisner]

I would spray them when you put them away and again when you take them out. I've never seen weekly Copper spray recommended for fig trees. Excess copper buildup in the soil is not a good thing for plants from what I've read.

 

[ktrain]

I would spray them when you put them away and again when you take them out.  I've never seen weekly Copper spray recommended for fig trees.  Excess copper buildup in the soil is not a good thing for plants from what I've read.

You're right about that...I guess I should have gone into further detail, I used to spray often because it rains so much here that it washes it off.
Rust is a common thing in the south...so the battle goes on and on.
I did cover the soil when spraying though.

 

[TorontoJoe]

@"Wisner"#90

I'm feeling I'm about to have a learning moment here. I don't have a huge rust problem but I have had a bit and I have treated with copper spray. Granted what I've used is in pretty low concentration as all the retail options are up here. I've actually used it more on tomatoes.

I always sprayed it on developed leaves. You're saying you apply it to a dormant, leafless plants? Is that so it should be systemic in the plant rather than be topical?

In terms of fungicide, a while back I got my hands on this stuff called Quadris. It's outstanding. Unfortunately it's also expensive for a jug, but a little goes a long way so a great item for a group purchase. But may not be worth it if copper is doing the job for you

 

[Figless]

@"Wisner"#90 Hello   I agree 100% with Wisner especially if there's a Winter, and a Spring Shuffle for potted trees. So that fig trees are not exposed to Winter rain constantly but are protected in a garage or GH like structure... there are a lot of topical application Treatment Solutions, such as wettable sulfur, where if you read the directions you will never see fig trees mentioned at all. When that happens I tend to pick a middle strength solution, and apply that. For trees in the ground I would go with two applications in dormancy, and once in the spring. In some cases twice in the spring if needed. But in that case you're looking at four applications maximum for two entire seasons of the year. Only recommending that for in-ground trees
((I am inviting feedback here))

 

[Wisner]

@"Wisner"#90

I'm feeling I'm about to have a learning moment here. I don't have a huge rust problem but I have had a bit and I have treated with copper spray. Granted what I've used is in pretty low concentration as all the retail options are up here. I've actually used it more on tomatoes. 

I always sprayed it on developed leaves. You're saying you apply it to a dormant, leafless plants? Is that so it should be systemic in the plant rather than be topical?

In terms of fungicide, a while back I got my hands on this stuff called Quadris. It's outstanding. Unfortunately it's also expensive for a jug, but a little goes a long way so a great item for a group purchase. But may not be worth it if copper is doing the job for you

I have used the Copper spray on the leaves also.  I am going by what this video is saying, stop spraying when the figs start forming.

 

[TorontoJoe]

@"Wisner"#90

Thanks for the video. I Think I understand now. After leaves develop, but before fruit because the copper isn’t desired there.

I know how humid it can get in the south east and I’ve seen pictures of trees entirely defoliated. every area certainly has its unique challenges when it comes to growing these trees