It's been raining like forever... Our temps are between 38 deg F to 60 deg F, really really slow growth. I wonder what diseases will my citruses get. I hope none, but on the good side, the blooms have stopped developing and remained unopened, holding off perhaps when rainless days come.

Just went out in the yard as soon as I got home. I have rust on the undersides of my Algerian clementine.

Joe, are you sure it is actually rust? The compendium of Citrus Diseases, second edition, does not list such a disorder. - Millet

Not in the sense of rust like the roses have, but I have a lot of rust like patches of discoloration under those leaves. Will try to get some pics as soon as the rains stop and there's still light.

Oh, boy, Joe :
My citrus have rust too or discoloration of the underside of leaves . So far on my Pomello, Page and YOUR calalmondin.
It is more prevalent on my Page. I also transferred it to the ground. It had overgrown its container I think.
I picked off the affected leaves and cut some branches that are affected too.
By the way, how do you treat this malady?
I thought the cause is not enough sun.
The blossoms continue though although it is raining like cats and dogs here and no sunshine. And I picked off all of the fruits large and small in all of my citrus except left some to your clemenule. I leave the Washington fruit though on the tree.
Also I picked all of the fruits to your calamondin to make a malmalade. The fruits are big!
I transferred my Kishu to CHC and safe inside . But I pruned the branches growing sideways.

And I did a lot of grafting for the last 5 days ala Mayorcan and banana style as an experiment.

I am waiting for your results Benny! I did a bark grafting using the Australian white lime as my scionwood unto Calamonding. So far it stayed green.

I was laughing hard last night

when the newscaster stated ".... finally a chance of sunshine tomorrow!". And I always thought we had the most sunshine.

Ahhh! Sunshine today April 6 2006.
Joe: What is the remedy for rust on citrus?
Sulfur powder?

I had it worst last year when I had a lot of mealy bugs. It seemed to worsen it. What I did was applied malathion on my Algerian, then after the bugs are gone, I sprayed copper sulfate let it dry, the next day took out the affected leaves, sealed them in a bag and throw away in the trash bin. Spray the tree again after removing the leaves. It dramatically improved the looks of the tree. I have only few leaves affected, must be the leftover from last year. Will spray copper again as soon as the forecast is going for drier week, then remove leaves and do the same operation as before.

Enjoy your rain. It hasn't rained in about the last six weeks at my place. If you see anything actually growing on my place it's either over the septic tank or I've been watering it.

.....Alan.

Alan, really wish that we could send it your way. we've had too much. some places have levees breaking and are flooding.

Joe, you mentioned copper sulfate. Fig trees are prone to rust, so I have 'copper fungicidal garden spray' called Liqui-cop. Active ingredient is 'metalic copper'. It doesn't say sulfate anywhere on label. Is this the same? Thanks
Patty

They are not the same formulation. Yours is more on the fixed side. Another formulation is the copper hydroxide. All have the same effectivity when conditions are right and applied properly, but yours are more expensive and should stay longer.

Joe, the rain storm that you had in California moved west, as always, and is scheduled to arrive here in Colorado tonight, but it will be here in the form of snow. The forcast is for 5-6 inches of snow starting late tonight and throughout tomorrow. Blizzard conditions here on the eastern plains. Then 65 on Saturday and Sunday. We sure can use the moisture. My wheat is just beginning to wake up from the long winter nap. - Millet