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White Spots On Roses — Causes And Their Cure

White Spots On Roses — Causes And Their Cure

Roses are one of the most common flowering plants in gardens, but they can be difficult to take care of due to their demand for attention. 

In addition, roses come in many different colors, and each of these requires different care.

A lack of attention can lead any plant to its death, and the same applies to roses as well. 

Unfortunately, this lack of attention is common amongst rose plant caregivers; thus, they may develop white spots on them as they grow older.


White Spots on Roses

The main causes of white spots on Roses are insects and fungus growth. The majority of the time, you can easily see the white spots on the Roses, but oftentimes they are not visible. To remove them, you can use neem oil, fungicide, or insecticide spray.


Eliminating White Spots from Rose Plants

White spots are usually caused by insect infestation or fungal disease in the plant. In order to provide basic care, individuals can use neem oil, insecticide spray, or even fungicide.

These should be applied once, every seven to ten days, in the morning. You can also use baking soda or dishwashing soap to clean off the white spots.

However, some steps need to be followed before doing anything to the Rose plant as doing any further harm to it would kill it.


Spray the Rose Leaves with Neem Oil

White spots on Rose plants can be caused by the fungus named “Podosphaera Pannosa,” which affects all the plant’s aerial parts. 

These white spots then produce spores that spread like a disease between the plants.

This is commonly known as powdery mildew. The white spots are usually seen on leaves, stems, flower stalks, and even petals.

To get rid of powdery mildew from Rose leaves, you will need to make a special solution. This solution will contain neem oil, which is a ready-to-use fungicide.

The solution must contain 1 gallon of water and two and a half tablespoons of neem oil.

You must spray the solution on all sides of the leaves, whether affected or not. Make sure that all the leaves are covered properly with this solution.

Even the unaffected leaves should be covered as this will reduce the spread of the white spots.

The Rose plant should be sprayed in the morning in order to get rid of all the powdery mildew. 

Spraying in the morning ensures that you won’t harm the bees, butterflies, and birds as they are not active at that time.

The solution should generally be sprayed after every seven to ten days on all the leaves present on the plant. You can also reapply the solution if the plant is washed or it rains.

Spray your plant on a dry and calm day, and do not spray it mid-day, especially during the summer season. In the summer season, only spray your plant either morning (make sure early morning) or during the evening.

You can also spray your plant mid-day in summer only if it is cloudy, just do not apply it when the sunlight is at its peak.

If you notice that only a few leaves are infected, then prune them off. But if the number of infected leaves exceeds 4, it is best not to prune them.

Once they have been pruned, dispose of them properly by burning them or throwing them in a trash can that is far away from the plant.

Remove any plant that is present near your Rose plant, and make sure all the equipment you use is sterilized.


Wash Off the Bugs

Some insects can be mistaken as white spots on your rose’s leaves. These insects include aphids that are white in color or even mealybugs.

These scale insects are capable of leaving their eggs on the bottom side of the leaves, which helps them avoid the human eye. These insects eventually feed off of the rose leaves, leaving white spots.

You can identify these bugs early by simply inspecting your plant once a week. If you detect them early, then you should thoroughly wash them off of the leaves.

You can use a hose or water spray and spray the leaves, as well as the blooms. The resulting spray shouldn’t be too strong to damage the leaves in any way.

You can even pick off the bugs by hand in the early stages and feed them to pets like chickens. 

Lightly tapping the bloom or leaves can also knock the bugs off of the plant, so do it once or twice a day.

Rose plants are capable of withstanding attacks against leafhoppers. Thus, leafhoppers can be used as predators, in this case, to get rid of the problem.


Spray the Leaves with Baking Soda or Dish Soap Solution

You do not always need to use insecticides or fungicides; you can also make your own home-based and natural products solution. 

This is an environment-friendly method of getting rid of bugs and fungus.

Use the 1 gallon of water: 3 tablespoons of baking soda mixture ratio for it to become more effective. Then you can also take a tablespoon of neem or horticultural oil, along with two drops of dish soap.

Mix them all up, and each element will help fix different issues. For example, baking soda will get rid of the fungi since it creates an alkaline environment, killing all the fungi.


Frequently Asked Questions about White Spots on Roses


Does having white spots on my Roses mean my plant will die?

White spots are not an indicator of death for the plant. But they can indicate that something’s wrong, and if it is not taken seriously, then the plant can die.


What treatment is the best for getting rid of white spots?

The best treatment for Rose plants is using baking soda and water. This is because baking soda is not hard on plants and helps get rid of the fungus.