Three Dangerous Diseases of Rose

Everyone loves gardening, but a garden looks more beautiful if has beautiful flowers & plants. Rose is one of the most loved flower in the world. There are over hundred varieties of rose. Rose is a little difficult to grow but if you want to have beautiful roses blooming all the time in your garden then you must take proper care of your rose plants. Let’s discuss about the three most dangerous diseases of rose plant & how to cure them.

diseases of rose plant

Dying Rose


The black spot is the most common and most dangerous disease of rose. It is a fungal disease where purple or black spots develop on leaves. Which leads them to turn yellow and often drop early. Gradually the branch tuns brown & dies and then the whole plant may die.

Rose Black Spots


The best method to prevent black spot is to remove all the infected leaves (if possible, then branches too) as soon as you notice them. When the new growth start, spray either any organic insecticide or chemical fungicide on rose plant.


Powdery Mildew

The second most dangerous disease of rose is powdery mildew. This is again caused by fungus. White fungal growth can be seen on the leaves which looks like someone has spread white powder over the surface of leaves, and can also affect stem & new rose buds. High humidity, dry soil, less sunlight & poor air flow are the favorable conditions for powdery mildew.

Rose Powdery Mildew


Water the plant regularly & apply mulch to prevent water loss and form less humidity. Place the plant in open with 4-5 hours of sunlight. Extremely important to chemically treat your plant as soon as you notice the infection. Can use Neem Oil as organic treatment or can use Copper OxyChloride as chemical fungicide.


Crown Gall

Crown gall is one of the most dangerous disease of rose plant. It is a bacterial disease which enters the plant through a cut in the root or stem and makes the plant tissues grow in an unorganized way, forming swollen galls.

Rose Crown Gall


If Crown Gall is detected at the soil line or in roots, just lift and destroy affected plant.Otherwise, remove the plant & cut gall tissues, soak the entire plant (with roots) for 15-20 minutes in a solution of 2 tablespoons of Actinovate per 2.5 gallons of water. Replant in healthy soil. Can also add the Neem cake powder or Phorate in soil.

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