Control of rose black spot

Interesting. Just been doing some resurch on the various black spot sprays. Ive read that diluted cows milk can be used to control black spot. Any one else heard of this approach.



Choosing between Triticonazole and Tebuconazole for rose black spot

 

I find milk is effective on mildew, but never heard of it used on blackspot on roses.
I thought sulphur sprays were effective.

 

I've found something called 'Fungus Clear Ultra' - which has a higher concentration of the ingredient that stops black spot. The thing is that it can only be applied up to a maximum of 5 times per year - which may be enough to stop the black spot. If not then it looks like the milk and water trick will fill in the gap. I've read that skimmed milk at a ratio of 1:2 with water is the ideal cocktail.

The 10 newly planted rose bushes in the front garden were devastated by black spot this year - don't want a repeat of this next year.

 

Have they got plenty of air circulation clanless? I had a bed of nine in my previous garden and only one suffered black spot. I put that down to it being an old variety.

 

From what we have read in the magazines about Black Spot, now is the time of year to take action.
If not already fallen, remove any affected leaves fron the plants and collect all the leaves on the ground and do not compost them as the fungus persists ; bin or burn them all.

Any affected leaves left on the ground allows the fungus to overwinter and then reinfect the plants next spring.

Doing that along with the use of a fungus spray from early spring should help reduce the problem.

There are some roses more resistant to black spot, though not 100% effective, but would not plant them in the same soil that already has blackspot.

Giving the roses the right amount of feed at the right time and also watering if needed should help keep them as healthy as possible and more likley to resists the black spot.

What are the names / types you have ?

 

I'm a big believer in plenty of mulch around Roses to smother any nasties getting splashed back up onto the plants