I have a couple of questions..

What is better to use rose tone or bayer 3 in 1 care OR can they be used together?

My rose leaves are turning yellow.. Should I apply iron tone?

My rose leaves are also getting black spots with a black powdery substance. Is neem oil sufficient to remedy this problem?

Is it ok to water roses at night?

Thanks shereen
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Hello Shereen I can't answer all of your questions, because my roses don't get blackspot here...and I garden organically...so I don't spray. As to the leaves turning yellow. Can you post a picture? Yellowing leaves with green veins could indicate that they need iron. If they're all over yellow...it could mean they're old leaves or that they're either under or over watered. Do you fertilize your roses?

Rose Tone and the 3 in 1 product are two different things. Rose tone is an organic rose fertilizer The Bayer 3 in 1 is a fertilizer, insecticide and fungicide combination product. I never recommend using that because you don't usually need all three at the sane time. They are weakened versions of all three combined to make it easier but they are less effective as a result. If you need fertilizer use a good one so you can control the amount your roses are getting, If you have a bug infestation, identify the specific bug you have and use an insecticide meant for that bug. If you have a fungal disease, same thing, ID it and use the right fungicide for that disease. You'll have much better results.

Without pictures of the leaves we can't attempt a diagnosis. Yellowing leaves are a symptom of many things but how they are yellowing makes a difference.

Be EXTREMELY careful using any type of oil on your roses. Oils will burn your roses in high heat and sun conditions. Neem oil is best used in the fall, winter and early spring. The height of summer is the worst time to use it.

It is not recommend to water at night. Wet leaves during the cooler night hours can lead to fungal diseases. It is preferred to water in the early morning so the leaves will have plenty of time to dry off before it cools and gets dark. However, if night time is the only time you can water, do it. It is more important that the roses get sufficient water, no matter the time of day.

I've often wondered why watering at night would be a problem if it's not overhead watering.In fact, one might think nighttime watering would be less wasteful. Just a thought.

WHAT SEIL SAID!!!
(ALL of it.)

And let me add to the question of oils that I have had rose foliage burn to a crisp in summer temperatures of 75 deg. or less. Which is why we quit using that.

Photos of the "sick" leaves would be helpful. Without it, any attempt at diagnosis would be worse than unhelpful.

vaporvac said:I've often wondered why watering at night would be a problem if it's not overhead watering.In fact, one might think nighttime watering would be less wasteful. Just a thought.

Probably nothing wrong with watering at night as long you do not get the rose leaves wet...

BUT my thoughts are water is needed more doing the hottest parts of the day...So watering in the morning makes more sense to me...But I do it both ways...lol

I agree, Jim. On very hot, sunny days I often shower my roses with the hose to cool them off. I swear I can hear them sigh with relief, lol!

There's a lot of controversy about watering during the day and watering the leaves. I'm of the opinion that the leaves need the water too. They do absorb water through the leaves. And a good rinsing will help keep the leaves clean so they can do their job better. There is even some thought that washing off the leaves can cut down on diseases because it washes the spores off. But what ever time you can water the important thing is to do it! Watering properly is the MOST important thing you can do to keep your roses healthy. All the primping and fussing and fancy applications won't do diddly if the rose isn't getting enough water.

If you have a lot of roses pretty close together and don't prune them assiduously (like some people I know), watering the leaves can be deadly.
David

BigAppleRoseGuy said:If you have a lot of roses pretty close together and don't prune them assiduously (like some people I know), watering the leaves can be deadly.
David

Yes, I learn't that the hard way...
in MY conditions I ought NEVER to water from above. It only cause BS become widespread....HERE. Now having said this deliberately with capital letters, do I follow it always? No.... What I don't do, let a sprinkler rotate hours long over my roses. However if I need to wash down aphids with a strong flow of water I do it early in the morning letting the leaves get dry by noon. I choose a sunny day for that. What I don't want to develop is a stagnant humid microclimate around my rose leaves. Here comes in the wind factor. A slight wind/breeze, which is common here, will dry up leaves in a matter of minutes in our mid summer bone dry season. Not so early spring or mid fall onwards. Here's where evaptranspiration rates have something to say... . What does all this explanation sum up to?. Well one may ( ) have initial concepts to contend with, but has to observe all factors in any given moment and decide...
@MargieNY said not long ago: observe,observe,observe....
and only then decide. My to her.
Arturo

True, Arturo! As Jeri often says, location, location, location!

We have years where it just rains, rains, rains and we have heavy nightly dews which wet rose leaves... So I only grow roses that will do ok in those conditions without spraying...Trial and error...

You're right, Jim.
This year is a good example. We have had more rain this year than I've seen in decades. I've also had more damned black spot than I've had.
I think my trial and error will be that I'll go through the garden looking for plants with yellow leaves and black spots and I'll just yank them
and start again next year.

No second chance?

Well, maybe.

jim1961 said:We have years where it just rains, rains, rains and we have heavy nightly dews which wet rose leaves... So I only grow roses that will do ok in those conditions without spraying...Trial and error...

This winter is just that....Will it be the same later on?. . Now all the extra rains only provide for the aquifers. Well replete is a wonderful way to start growing season which is around the corner and...
me way behind with all my marathons that should've have started way before...
Surprisingly I look at it and still smile....
I honestly think I should sign into the Mental hospital soon... Is there a happy fools quarter there? If so I already qualify for it...
Arturo

Arturo .... I love your sense of humor!!

Do any of you feed your roses roots over the winter? Not something high in nitrogen, obviously... I was doing a good job of feeding MIL's roses until August, now wondering if I should give them a treat to make up for my neglect or if that's a bad idea. I think I'll prune hers back, also, as that's what they always did in NC. Mine are shrubs & floribundas & climbers, so I'll prune off anything weak or damaged but leave most of the rest of it.

I don't, but I'm sure you could amend with organics at anytime of the year. In my zone, I don't fall prune as I want as much live cane going into the winter as possible to make up for any die-back I may have. Of course, If somethings broken perhaps a clean cut would help keep out disease.

I don't fertilize during the winter but I do use organics right up to dormancy. Anything good for the soil is good for the rose. I agree with Vaporvaxc, no pruning in fall except for dead wood or damaged canes. Otherwise just leave it alone until early spring when you can see what you have left after winter.

I guess it is clear that in the northern states (US), it makes sense to pass on pruning after September or so. I find it hard wondering through the garden and seeing what I should shape or just whack off, but I stop myself everyday.

On the other hand, I have a two-inch layer of nice double-shredded tree mulch that I put down in the late spring. I've been stirring it and bothering it to allow proper drainage, but I don't intend to put any more down until next spring. The Parks Department would love to dump a ton (literally) of mulch in front of my garden for me to spread around, but I don't think that would be prudent. What's the general wisdom about that?
David