Black spot on roses

What do our members recommend to treat
black spot on roses.

Milk for spots!

Reply from Laura Thomas

Hi Gordon

I tend not to use anything as I aim to be 'organic' so no insecticides or fungicides hence my roses do succumb most years to black spot in varying degrees. I destroy the infected leaves but inevitably some end up back in the soil to re-infect the following year

I try to keep the roses as strong and healthy as possible with good soil and early feeding
- have just googled the organic solution which I will try this year:
spray the affected rose with skimmed milk (one cup to one gallon of water) at weekly to 10-day intervals. A regular dose of bicarbonate of soda is said to work too.

Here is the rest of an informative Sarah Raven
article on roses

best wishes
Laura

Black Spot

Reply from Gordon

Hi Laura
Thanks for your tips.I had some success with Bi-Carb last year ,but i did not know about Skimmed milk.
I do remove all dead leaves at summer end but I must have missed an odd one.Thats an interesting web site you give me.