Best way to get rid of blackspot on my roses?

Answer 1

You've had some good diagnoses but not much good advice. Yes, blackspot is a fungal disease common to roses. It's caused by moisture, including humidity. Follow the advice you were given to remove affected leaves, clean up debris, and water at the base, not the foliage.

Now, no need to buy toxic chemicals. SPRAY the foliage with a solution of 1 T. baking soda to a gallon of water. This changes the pH of the leaves. Repeat after a rain.

Answer 2

If blackspot is already on your roses, then remove and burn any leaves that have dropped down and are covered in black spot. Next, find a good spray like Multirose which feeds the rose as well as prevents blackspot. You should really spray BEFORE the leaves come out. Good luck

Answer 3

Hi. I agree with HipiChik and Marion. Get rid of the affected leaves. This is a fungus and will spread to the other leaves. Next, find you a good fungicide spray. I use Bayer Advanced Disease Control for Flowers and Roses. Spray at least once a week. I have also heard that alternating between two different fungicide sprays works well. I use cornmeal at the base as well, but it is more of a preventative measure. Once the breakout occurs, you have to pull out the sprays.

Oh, one last tip....don't water at night. Water in the mornings and if you can only around the base. Try to keep those leaves dry.

Hope this helps! =o)

Answer 4

First trim off all affected parts. Sterilize your snippers after. You can use a fungicide from a garden center, or you can bury cornmeal at the base of you plant about once a month. It has a natural fungicide that works great with roses. Garlic is another natural fungicide, make a spray.
And for some reason I dont remember, its important to bury banana peels around the base of roses.

Answer 5

Black spot spreads rapidly on leaves and heavy infections can spread to leaf buds and stems causing them to die back - it often occurs during warm, wet weather in summer or due to a potash shortage. It is difficult to control but if you spray with Systhane a week apart in spring when leaf buds open and again in summer you should be ok. Remove and burn fallen leaves. Systhane can be bought in garden centres as a rose spray.

Answer 6

Harry old boy, get round to the garden centre, find the sprays, look at what they do, buy one for your problem, take it home and spray em, it will be a fungacidal spray.

Answer 7

Pull all the damaged leaves off and burn them; also any fallen leaves. Better still cut the rose right down and hopefully if it grows again it will be better.

Answer 8

watered down washing up liquid works everytime