Why do I have brown and yellow spots on my roses?

Answer by  BrendaG (6111)

Leafspot or Blackspot originates from a fungal rose disease. The fungus puts out a chemical(ethylene) to kill leaf tissue. Preventive fungacide applications should be exercised when needed.

Answer by  worker8388 (994)

Basically spots are caused by fungus. Fungus Diplocarpon rosae is the fungus affecting the roses. Diseased leaves that fall on the ground should be removed or burned. Fungicides can be applied for the affected roses. Water them in morning to avoid dryness of the leaves. Do not allow your plant in rainy reason without fungicides.

Answer by  harper2583 (466)

You could have spots on your plants because one you could be over feeding them or they could be getting too much sun.

Answer by  sathya (237)

The brown and yello spots on your roses are because of mildew-fungus that roses generally have. This is because of the soil content. Make sure that you spray water along with 1% of milk in it. This will help.

Answer by  manju (82)

when ever vitamins and proteins are very less in trees then leaves and roses will lost their color so it will get yellow and brown spots on roses.