PV Picotee,

Not in my garden. Once black spot gets a hold it persists, and works its way up a bush no matter what the growing conditions are. Black spot keeps defoliating until hard killing frosts here. Weather changes that supposedly do not favor its progress seem to be irrelevantly regarded by the fungus. As much as to say, "My name is Black Spot, any challengers?"

The scientists say black spot requires certain ideal conditions to get started: certain temperature parameters, and specific moisture limits. I guess my black spot strains do not ascribe to current scientific thought.

I have had spring and late fall black spot outbreaks when weather conditions, according to the scientists, made it unlikely for black spot to manifest....tell that to the black spot!

If you garden where black spot is an issue, expect an outbreak any time. You will often scratch your head, saying, " Why now, the weather is not conducive for black spot at all.".

Moses

Not here either, when it cools down we still have nightly dews that keep the leaves damp all night. The heat that helps to keep the black spot in check Is gone. Ideal for a black spot explosion. Fortunately I only have a couple of roses that will black spot.

Hmmph. Had high hopes for cool weather turnaround. Thanks for input.

Just frustrating - did not have it last summer at all on the roses that this year have it. Looking forward to a new season -- just a few months away....ha ha

PV Picotee,

Every year is different concerning black spot. There are supposed to be several different strains of BS, and different ones dominate alternately on a yearly basis. Some are evidently more virulent than others. So many factors go into why some years are light concerning black spot, and some years are plague proportions, that it is impossible to predict what will happen.

Moses

I agree, I have the Lady Gardener thats spots every year if not sprayed. Others like Tequila Supreme never had black spot before. Speaking of The Lady Gardener it needs dug out thrips infest all of the first blooms. Then black spot gets the leaves. It could be in part because I had to get it on Dr.. Huey rootstock that absolurely hates it here. I’ve been holding out hope that she would grow her own roots but I’m thinking this has not happen yet.

As far as I am concerned, the great mystery isn't why you are getting it this year, but why you didn't get it last year. Were the roses new? There is the possibility that they were still benefiting from some residual fungicidal effects.

In my case it’s a serious local drought. That really only bothered the roses that I moved last fall so comprised root system. Except for TLG who spots all the time.

We were under a heat index warning for four days last week (100F-105F heat index), Then look what we got! And yes we have the dripping fog at night - no good!

mad-gallica - glad to see your statement regarding fungicide residual carried over on new planted roses. Always suspected that and when it runs out - watch out!

lkayetwvz5 , can you take clear closeups photos of those effected leaves??? Thanks!

Jim - that isn't the only one looking like that. Four worse:

Traviata shown on above post.

ADR Jasmina

AARS no spray winner 2013 Sunshine Daydream

Moonlight Romantica

Some damage not shown:

Apricot Drift

ADR Laguna

John Davis

Bonica

Margaret Merrill

Pat Austin

Totally defoliated to the tips:

Lavender Crush

Prairie Princess

Cardinal de Richelieu (gallica)

Most leaves have dropped but not all, so probably anthracnose and BS, maybe downy mildew.

Patty,

Sounds like your rose should be renamed ‘The Full Time Lady Gardener Required’. ;-)

Thanks for the laugh, Ben.

Ikayetwv- I don’t think that is anthracnos. Leaves with anthracnose tend to stay on the rose forever.

I can't really tell from your pics lkayetwvz5 .... I would need real close-up photos of damaged leaves...lol...My eyesight isn't as good as it once was.,...lol

But from those more distant photos I can tell you might have more than one thing going on...

Are you in a location that gets alot of rain? or drought?

Whats your general location? You in growing zone 5? Thanks!

Ha ha, the dirty deed is done. TLG is gone. That is last time I’ll ever plant a Dr. Huey rootstock rose. The rose had not tried to go own root and the Huey roots had not grown an inch. Don’t really know if her poor condition was the roots not going deep enough for water or it’s just a crummy rose.

On a good note there was no unseen gall. The soil she was in is positively luscious.

PAoK your next.

When you said PAok your next Patty you reminded me of this professional wrestler...lol...

Goldberg