Batsheba and MIP already rusting…

CM:

Can you take a close-up demonstrating the rust?

I’m wondering if the foliar disease which has plagued the same rose here the past 3 years mid-late season is rust - I’ve never diagnosed it.

This is just the beginningNing, laat year the whole plant was covered

I actually have quite a few with blackspot already!

no buds yet but losing leaves in april.

sheesh.

Yeah JC @jc_7a_MiddleTN whats up with that?!! i dont usually see anything until september!! weather maybe?!

That really does not look like rust to me, but I am no expert on rust. I'm probably wrong so ignore me.

I'm no expert, either, but that looks like rust. What a shame, Ceres. Diane

Thanks @Diane Brakefield and @Sheila z8a Rogue Valley OR its probably my fault for planting them so close together. will do a round of spray to get things under control

I’ve never seen that here.

I’m reading here that it’s a serious problem in the West, and in eastern US is introduced on new plants where it does not overwinter except in Deep South

https://26d66698-46f2-4fb6-988d-7adb1a57e8c0.filesusr.com/ugd/b152c0_7043523db60e4985a2a9c56cb8f6c829.ppt?dn=CR%20school%20plant%20diseases%20and%20insects%20202

I think it's only a serious problem in parts of the West (California) and that's just parts. It's certainly not a problem in the arid West and that includes here. There's a lot of the West that's not California. Diane

Well, that's a shame. I don't know what to do about rust.

CeresMer: The last photo in your series (leaflets are in your hand) provides the best focus of the rust lesions. Many of them appear as intersecting spicules.

I didn’t see see this appearance described in articles on rust, nor did I see rust appearing like this in online examples.

Have other members here seen rust present in such a manner?

I just googled "rose rust" and checked google images of rust. There are many types of rust (I suspected this) with many different appearances. And I did spot the rust that Ceres shows in her photos. It was a little ways down. Gad, rust is a nasty thing. We may pay a fortune for water and a watering system here where it's so dry, but we don't have rust, black spot, downy mildew, and other plagues. Next time I have to set up tiny sprinklers and adjust drip emitters, I'll think of all the fungus issues we don't have. Diane

@rifis (zone 6b-7a NJ) it is rust. its in the very beginning so it has not start ”rusting” yet yet. it will start getting powdery orange

@Diane Brakefield lucky you my friend, here in the rain state I have them all 😩😩

Thank you @judijunebugarizonazn8 what is tge cornmeal trick? applie cornmeal on the soil? on the roses? please let me know. thanks

This is rust. Here in California I find rust is the most difficult to get rid of in all fungi disease. I can easily cure black spots with mancozeb. But nothing seems work for rust. Last year I had to shovel prune Black cheery because of horrible rust. I am eager to know if anyone has any good idea.

I just googled "cornmeal for rust on leaves", and found the following. Sprinkle a handful of cornmeal around the base of the plants affected. It didn't say if you should work it into the top of the soil. The cornmeal should be the grocery store kind. Use once a month. One source said you could make a "cornmeal tea" by soaking cornmeal in water for about four hours. Remove cornmeal (with a sieve?) and use tea as a foliar spray. This source didn't give amounts, but I'd use a cup of cornmeal with a gallon of water. Just guessing here. Any other suggestions out there? You can use cornmeal for black spot according to some. Diane

Update: ignore my comments about 'Mme Isaac Perriere', which is what I thought was being referred to by "MIP" (if you're going to refer to a rose by an abbreviation, realize that it can be misinterpreted) . Still, my comments about removing and replacing Rust prone roses stands.

I realized many years ago that any rose that Rusted early in the season was going to be a problem rose forever, and so I removed those varieties and replaced them with less problematic roses. 'Mme. Isaac Perriere' was one of them, but far worse was 'Rose a Parfum de l'Hay', a true Rust machine. Horrible.

Unless you want to spend the rest of your life spraying those every 12 days with an Azole fungicide*, replace them before you become any more devoted to them. Maintaining a "Rust Queen" isn't worth it.

Its possible that 'Bathsheba' won't get as much disease once you remove 'Mme. Isaac Perriere', which is undoubtedly the spore generator here.

*propiconazole, the most effective fungal suppressant. Sold under a variety of brand names; look for it in the list of active ingredients.

Could be wrong but I think the MiP that Ceres has is maybe Moonlight in Paris, not Mme. Isaac Perriere. Which may or may not be a rust magnet too in other climates, I don't know, but I don't think it's for sure the source of rust here. @User

@Mischievous Magpie (CO 5b) And therein lies the problem with writing varietal names by their abbreviation. Thanks for clarifying that.

Any rose that Rusts in April is going to be a problem. Suppress the disease with commercial fungicides, or replace them with roses that don't Rust so easily. I have Zero tolerance for Rusty roses.

I couldn't imagine struggling with disease before the spring flush even begins. I am fortunate to live where rose diseases are uncommon, but if I saw a rose burdened with any issue this early I agree that removing it would be the only option that made sense to me.

Me too. I did that with Royal Amethyst for black spot. Blackspot just doesn't happen here...except for this rose. So even though it was a good bloomer. I got rid of it.

Thanks @User I would agree with except that the rose that started last year was Abe Darby.

Now, this spring moonlight in Paris, Batshebha are already showing rust.

I think is mostly my fault for planting them to close together and not cleaning the bed as I should have. they are also against a fence which limits airflow

I’m kind of new to rose growing so when Abe had it last fall I didn’t even know what it was and didn’t treat it. I thought it was like black spot at end of season.

I agree with @kj that might be worst than black spot as it spreads easily.

I do not spray, so this will be a challenge for me. Because I’m already seeing in other roses I will spray to get it under control. Will also try to be on top of the diseased leaves.

I read some old posts that said milk might work. Will try that too!