What's wrong with rose

3 of our 9 roses along our back fence seem to be dying.


In the space of a month, from the middle of June to now, these 3 roses have gone from vibrant, healthy roses with a little bit of rust/black spot to defoliated, withering, anaemic.


The other 6 along the back fence are generally healthy (other than some mild signs of rust/black spot) with very little defoliation.


In March I tied all the main canes of all 9 of the roses against the fence wth cable ties, ensuring they had room to move/grow, and at the same time trained the canes to grow laterally/horizontally so that the canes from adjacent roses would cross each other.


At the beginning of April and beginning of May, all 9 roses were sprayed with Rose Clear, as they all had aphids, signs of rust and black spot. The 1st spray got rid of the aphids and really invigorated the roses. The 2nd spray I think I was a little bit too heavy handed and some of the leaves were really dripping with the spray and seemed to make the rust in particular a little bit worse.


However, since then, they have all flowered, and 2 of the 3 that are showing really bad symptoms of disease were probably the most prolific flowering.


Since the start of April I was feeding each rose with one capful of miracle gro concentrated liquid rose and shrub feed and one gallon of water per rose, per week. I continued this up to the middle of May where a hand injury prevented me from doing this.


From the middle of June, I then started feeding again, with each rose being fed once per week with 2 capfuls of miracle gro concentrated liquid rose and shrub feed mixed in 2 gallons of water per rose.


My wife thinks from the visual inspection that the damage looks like damage from a spray and not from over feeding / under watering but neither of us are experts and just aren't sure what to do and would be grateful for any advice from members of the forum.


The roses are 4 years in the ground and all David Austin varieties.

 

These are photos of the roses from mid June where they were all in bloom and generally healthy.

 

Could your neighbour have been spraying?

 

Not good on roses but looks like blackspot to me.

 

We will ask the question when they’re back from holiday

 

If it is black spot what would you recommend as the best approach?

 

Could it be over feeding that’s caused all of this?

Trying to eliminate things.

And/or over watering?

 

I've got to admit your pictures make me glad I don't grow roses.
Some people have the knack, or maybe it's the soil, or maybe it's picking disease resistant varieties.

But on wandering around I see far more sick looking roses than healthy ones.
Where is @wiseowl when you need him, probably residing in the weather thread as usual.