This product will not work either, inspite of being highly touted by the manufacturer. As a CR, I highly recommend the combination of Banner Maxx and Manzate or Mancozeb. Mix Banner Maxx at a rate of 1/3 tsp. per gallon of water with 1 Tbsp. of Manzate or Mancozeb, and spray every 10-14 days. Most people don't know that both Mancozeb and Manzate contain the only chemical that will actually kill the BS spore. None of the other chemicals for BS, including Bayer 3 in 1, will work. If you have BS now and want to get it under control, do the following: Mix up some Manzate or Mancozeb at the rate of 1 Tbsp. per gallon of spray material. Spray every three days for three or four spray intervals, and your BS should be under control. At that point I would go to the Banner Maxx/Manzate(Mancozeb) combo. All of the suggested products are available from Rosemania (see link below).

Here is a link that might be useful: Rosemania

Roseman - thank you so much for the valuable information, and for the Rosemania link. I wonder how the battery-powered sprayer works?

Terryjean if you are still with us-the bayer fungicide only[not the 3 in 1] is the best product for blackspot.Please do not listen to the one person trying to talk you out of it.

OK - so now I'm confused. I've been using Immunox spray cans since my sprayer died earlier this year (I know; it's way expensive but I only have about 10 or so roses that have BS problems...the rest are rugosas, etc.). I want to buy another sprayer and have been reading threads about Banner Maxx, etc. What do you recommend? Just the Bayer fungicide? And what name is it marketed for sale under?

terryjean, go to the box store and buy a 1-gal pump-up tank sprayer for $15-$18 and a bottle of Bayer Advanced Disease Control containing only tebuconazole. You will need to mix only 1/2 gallon at a time. It is much more effective than Immunox and certainly cheaper than aerosols of any kind.

The Rosemania stuff is for people with large gardens.

Thanks MG

Terryjean, Pete's product is "Bayer Advanced Disease Control for Roses, Flowers, and Shrubs". It contains tebuconazole, which is the same fungicide used in the 3-in-1 soil drench product and is chemically very similar to the fungicide, propiconazole, used in Banner Maxx .

Which gives better control, tebuconazole or propiconazole? I don't know. In my garden, I suspect you couldn't tell the difference. Propiconazole has the longer history of use and many swear by it. Tebuconazole, on the other hand, has unequivocally been shown to kill an established infection of BS, propiconazole has not. Both fungicides are systemic and quite possibly they are not capable of killing the blackspot spore on contact. They are known to kill the spore once the spore starts to germinate. Manzate or Mancozeb may or may not kill BS spores on contact, but a lot of people swear by it, esecially in combination with a systemic fungicide to stop a rampant infection. The idea is that Manzate kills the spores and the systemic stops any that survive, during or following their germination.

So what should you do? I don't think you'll go wrong with either Roseman's or Pete's advice. I'd stay away from the 3-in-1 product. It will be much slower in action and it adds an insecticide which might not be needed.

Here is a link that might be useful: Pete's Bayer Product

Thanks for the advice, gentlemen. Good discussion and I might get a good deal on a sprayer at this time of the year since the big box stores need the space for Christmas decorations. Gives me another excuse to go visit Lowes.

The 3-1 is best for prevention. Since it also includes fertilizer and insecticide, you'd only want to use it if you want all three.

For an active BS infestation, you need what mike suggested, the Bayer Advanced Disease Control and a sprayer.

rubies22f--
I'm assuming you are a fairly new poster to this forum, so I thought you might like to know that there are a number of different views on the best way to handle blackspot. Above you see several of the standard answers you will repeatedly get to your question. We always seem to have to agree to disagree on this subject.

A lot of us would urge you to never use the 3-in-1 type products since we think the insecticide included in it is overkill.

Myself, I use the Bayer Advanced Disease Control for Roses, Flowers, and Shrubs. As michaelg says, it is the easiest solution to your problem. However, the other products also work if, for some reason, you want to try them instead.

Good luck,
Kate

I alternate Banner Max and Bayer Advanced Disease Control (I already had a good supply of Banner Max when I started using the Bayer). Honestly, they BOTH work well. But Bayer is better for getting rid of established blackspot, at least in my garden, and others have reported the same.

I completely agree with above statements to the effect to look for the Disease Control mixture and NOT the All-in-one or 3-in-1 and follow the instructions for spraying, rather than soil drench. The soil drench method is overkill and expensive. "Disease Control" used in a pump sprayer in water on a schedule is very effective and will last a long time. The problem with 3-in-1 is cost AND risk of chemical burn from all that fertilizer. Not to mention the risk to good bugs from the insecticide in it.

Rubies22f,
I forgot to mention, if you have trouble finding the Bayer Advanced "Disease Control for Roses and Shrubs", make sure to look at Lowes. I haven't seen it anywhere else, though every garden center seems to be peddling the All-in-one stuff (must be that marketing gimmick of appealing to people's desire for "low-maintenance" gardening). Each Lowe's store might be organized a little differently, but I've seldom seen the Disease Control bottle near the All-in-One. It's often on a completely different shelf. So ask staff if you can't find it. It costs about the same but will last MUCH longer, because the concentration you use is much less (spray goes much further than pouring it on the plants). I hope that's helpful.

Mike

In my town, I get the Bayer Advanced Disease Control for Roses, Flowers, and Shrubs at our local Home Depot. Lowes may have it too, but their nearest store is 35 miles away, so I rarely go there.

In other words, check around at several of those kinds of stores if you don't find it at the first place you go.

Kate

Oh you guys, should I say you are "lucky" or not. All our systemics in Canada have been banned from the market. I am sure it will happen to you guys soon. I still have some left overs which may do me into half the season next year. Then whay??? Systemics have always worked the best for me.
Pauline - Vancouver Island

Rubies... I just wanted to add that I'm quite new to roses and I also was using Immunox until I found this forum and switched to the Bayer Advanced Disease Control. It has just been a miracle product for me . I had several awful years of black spot and I was diligent with the Immunox :). At first I mistakenly bought the Bayer 3 in 1 because I was not paying enough attention at the store and as was posted here, the big box stores often don't put the Advanced Disease control bottle in with the rose care products. I also find this product to be very cost effective. Good luck but I know you'll like this product. I'm sure the Banner Maxx etc is equally good but I have never found that at a local Lowes or HD.

We all have to cordially agree to disagree sometimes on this forum. We do try to keep it civil..
I personally don't use the combination products either as I found them too harsh. If I see the need for an insecticide or miticide which is rare indeed, I will select and use the appropiate product for that problem and spray it by itself.
I don't use any of the Bayer products as I found them mostly ineffective for my gardens, and one of them actually killed a few of my roses a couple of years back. I am now leary of all their products.
First, I mix in a spreader/sticker product like Indicate 5, then I use manzate/mancozeb mixed with either Funginex by Ortho (now I believe it is known as Rose Pride on the green bottle), or Honor Guard which is a generic Banner Maxx from Rosemania. Same stuff at a slightly cheaper price that still appears to work for me anyway. When the weather is cool enough--under 80 degrees--I will sometimes even use Daconil on a rotating basis as well.
I do the three different preventatives Funginex/Honor Guard/Daconil rotation to try and keep the fungal spores from becoming resistant to the use of just one of these products every time.
I wish there were another product to rotate the contact fungal killer Mancozeb/Manzate with but I don't think there is currently one available. If/when I do find one I will likely rotate it with the Mancozeb/Manzate like I do the other.
For most insects I use Merit at a 1/8 tsp per gallon rate. It is a systemic and seems to work well and i dont see any dead beneficials like bees and the like, only dead thrips and/or cucumber beetles as that is what I generally have to spray for on rare occasions. It seems expensive but when you only use 1/8 tsp at a time, it really isn't. A little goes a long way since all I have to spray is the very tops of the bushes where the new growth and flowers are located. I spray the flower buds before they open or just as they are starting to during thrip season.
Be very careful not to spray any insecticide indiscriminantly as you can end up killing beneficials that munch on spider mites and keep them under control for you naturally. Then you end up with a spider mite infestation that can be devastating.
For the one time I had spider mites from stupid insecticide spraying I used Stirrup-M pheromone mixed with Kelthane miticide both of which I got from my local nursery. Rosemania also carries them. The Kelthane worked quite quickly and completely and my spider mites were soon under control but not before doing notable damage. The Kelthane is super cheap compared to the regular miticides on the market. I think the Stirrup-M pheromone is the key as it attracts the spider mites to the miticide where they soon die just by contact with the miticide itself.
I have over 200+ rose bushes so I have to try and be cost effective where possible when purchasing these items. These treatments all seem to work fine for me so far.
One more thing to note. Don't let your unused products freeze in an unheated shed or garage during the winter as that can ruin them for further use. I move all mine into my basement for the winter before the first freeze hits. No sense having to throw it all away or worse yet use it and get no results because the product is ruined. Check the labels carefully as many warn you not to let the product freeze for this very reason.
Just my two cents worth......
Take it or leave it...
John

I don't spray so, for me, 3-in-1 is very useful because it's poured close to the base of the bush and it's easy to treat just one plant or just a few. It's simple to add the water and apply with a watering can. Plus it doesn't get in the wind and bother the neighbors.

What I don't like about it is that there's no available option to get only the fungicide or only the fungicide and fertilizer in the same pourable (is that a word?)form.

Colleen

Supposedly you can use the fungicide only as a drench, but I've never tried it.