Flower care
How to get rid of Powdery Mildew on Roses?

How to get rid of Powdery Mildew on Roses?

Suffering from powdery mildew on your roses? Learn and understand how to deal with them

Powdery mildew is a common rose problem. It’s caused by a fungus that can result in ruined blossoms, fewer roses, and black spots on leaves. If you think you might have powdery mildew on your roses, it’s important to understand exactly what the disease is so that you can make sure it doesn’t spread or get worse.

 We’ll talk about how to recognize powdery mildew on roses, why it happens, and how to stop it from happening again — along with a few natural remedies you can try if you find powdery mildew on your rose plants

What is Powdery Mildew on Rose?

Powdery Mildew on roses
Powdery Mildew attack on Rose Buds

Powdery mildew (also known as dust mite or mildew) on roses is a fungus that grows on the leaves and stems of roses. It is a common disease in home gardens, is a particular problem for very warm, humid climates.

Typically, the fungus podosphaera pannosa that causes powdery mildew can live in the soil for years and will only attack plants that are under stress. In addition, it’s not isolated to just the plant itself; the fungus can also infect other plants in your landscape or flower bed.

Powdery mildew can be a devastating fungus on your roses especially when it appears in wintertime. Serious powdery mildew infections can kill the whole plant or a part of the plant like leaves, flower buds, and so on.

Also, Read l Common Problems of Rose Plant

Identifying Powdery Mildew on Rose Bushes

Powdery mildew is an infectious disease that causes small white spots to appear on the leaves and stems of the affected plants. The leaves look like they have been dusted with white powder. 

Mildew generally appears as circular or oval white spots that seem to grow larger with age. These spots can appear on leaves, stems, and sometimes fruit. Powdery mildew grows most often on the upper side of leaves but you can even found their undersides as well.

As the infection progresses, affected leaves may change color from yellowish to greenish-brown and finally to reddish-brown. As the disease advances, leaves may completely dry out and break down.

Treating Powdery Mildew on Roses 

Rose Powdery Mildew Treatment
Powdery Mildew White Spots on Rose leaves

Preventing Powdery Mildew on Roses is simple but it takes time and care. Follow our simple guide and you’ll be on your way to healthy Rose gardens in no time!

Remove affected part of Rose plant

Make sure you trim the infected leaves, stems, and decaying matter and throw them in the trash bin. Remember, while trimming not infect other parts of plants and never throw them in the compost bin as they spread very quickly. Avoid keeping the rose overcrowded with leaves, do a bit of pruning. 

Also, Read l Easiest way to take care of your Rose plant

Use organic products over chemical 

Using chemical fungicide may give you results quickly but there is a high amount of risk to the plant. Alternatively, the best way to treat your rose plants is with organic things. Below are the few natural remedies that have to be followed to get rid of Powdery Mildew on rose plants :

  1. Spray 5ml Neem oil + 2ml Liquid soap + 1L of water for powder mildew rose treatment. 
  2. Use 2tsp of Baking soda + 1L of water on the affected area of rose your plant
  3. Keep your rose plant in the area where it gets 5 -6 hours of sunlight at least
  4. Make sure your Rose plant is not bushy prune on time and there is enough space for proper air circulation 
  5. Fertilize on the regular basis and water only after checking the soil
  6. Keep spraying neem oil on plants each week to prevent your plant from powdery mildew

Always spray the organic solutions in the evening or late at night and clean with normal water the next morning. This will help them to thrive better in sunlight. 


The next time you visit a rose garden that has powdery mildew on the plants, take some time to examine it closer with an observant eye.

Powdery mildew is a common problem for many gardeners and We are hopeful with the help of this article you understood why it’s there, how to spot your roses developing powdery mildew, and suggestions for what you can do about it.

Still, have questions? Feel Free to ask in the Comment section

You may also like other Rose Related Articles:-

Get Rid of Rose Suckers

Rose Blind Shoots

Rose Care in Warm Climate

Leave a Reply

Your email address will not be published. Required fields are marked *