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HYBRID TEA ROSE
ROD EVANS
Posts: 3
Help please. Why are my rose petals developing blackening.
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ROD EVANS
Posts: 3
Posts
Possibly black spot, a fungal disease. Increase the ventilation around the rose, feed water and mulch it quite thickly, remove any affected leaves and spray with a fungicide. It is unfortunately a good year for black spot on roses we didn't have enough frost to kill the spores. Also spray the ground around the rose.
Thanks Dave. Have treated for blackspot but now have blackening of the petals themselves. The blackspot on the leaves has disappeared after treatment.
Black spot can affect the petals as well Rod, especially if the fungus has had time to get a hold. I'd remove the affected flowers as well and spray again so that the whole plant is almost stripped bare, this will give it the best chance of recovery. It may seem harsh but sometimes you have to be.
Ah. Now I understand. I have noticed that the black has now changed to grey this morning. I have moved the position of the plant into a more open area and have sprayed with Rose Clear. Amputation begins!! Thanks for all the help. As you can guess, I am new at this.--Cheers