Content

• To step
• Method 1 of 3: Plant roses that are immune to sooty mildew
• Method 2 of 3: Make it harder
• Method 3 of 3: Treating black dew
• Tips
• Warnings
• Necessities

Fighting black spots on roses is important for every rose grower. Black spot is a fungal disease characterized by black spots on the top of the leaves. It usually occurs in hot, humid weather, usually during a wet summer. The leaves of the infected plant turn yellow and fall off. This weakens the plant and makes it susceptible to other diseases. Often he does not get through the winter. The fungus that causes the black spots can quickly jump from plant to plant if you don't do anything about it.

To step

Method 1 of 3: Plant roses that are immune to sooty mildew

1. Plant roses that are immune to sooty mold, as there are many beautiful rose varieties that are immune to disease and fungi. Prevent sooty mold by not planting rose varieties that are prone to sooty mildew. Taking care of the strains that are immune to sooty mold is much less intensive than taking care of the strains that are very susceptible to disease and fungi.
   • There are online lists of the species that are immune to disease and fungi, and garden centers often have their own list. Different rose varieties grow in each climate. So first check which species grow best in the country where you live.

Method 2 of 3: Make it harder

1. Choose with care the places where you plant the roses. The best way to prevent sooty mold is to plant your plants in areas where your roses thrive and where sooty mold does not stand a chance.
   • Roses need about 6-8 hours of sunlight per day. The morning sun is best: it quickly evaporates the dew of the night.
   • It is important that there is enough air circulation where the roses are planted. Plant the roses away from each other so that enough air can circulate, and prune some branches in the middle to allow enough air to circulate inside the rose bush.
   • Make sure the soil is nutritious. Make sure the soil is rich in composted organic waste and that water can be drained properly. Compost is suitable food for the soil.
2. Water your roses the right amount. Too much moisture can lead to sooty mildew. So it is important to water the roses with care, and to make sure they don't get too much water. When the weather is cold, you can give them a generous amount of water at the roots once a week. When the weather is hot and dry, it is necessary to water the roses more often, without getting the leaves wet.
   • Use a drip hose or irrigation system to water the roses more often at the roots.
   • Be careful when you water the roses - the spores of the sooty mold will be spread by splashing water. Using a drip hose or irrigation system is always better than a garden hose with a sprinkler on it.
   • Only water the roses in the morning so that the leaves can dry up by the time it is evening.
3. Prune the roses regularly. Regularly remove any weak or damaged branches and leaves by pruning or cutting them.

Method 3 of 3: Treating black dew

1. Make sure you know what to look for. Starburst has the following characteristics:
   • Round black spots with frayed edges on the leaves.
   • The lower leaves usually become infected first, after which it spreads quickly.
   • The top leaves turn yellow and fall off.
   • The plant becomes weaker and blooms less well or no longer flowers at all.
2. Remove infected leaves and branches as soon as possible as soon as you see star sooty dew and put them in a garbage bag. This slows down the progression of the fungal disease.
   • Clean up leaves that have fallen to the ground and are contaminated immediately and make sure they are stored safely. If they are under a rose, the spores of the fungus will climb back into the rose as soon as the temperature and humidity in the spring are optimal.
3. Spray the roses with a fungicide every week or every two weeks during the roses' growing months. Even without the characteristics of star reddew, this is an important part of preventive maintenance and care of roses. Fungicide contains trifloxystrobin, ziram, chlorothalonil, mancozeb, thiophanate-methyl, and other substances. Talk to the staff at a garden center near you about the right spray or powder for the roses in your area.
4. Prune any rotten branches until you are left with only the stems that have not been affected by the sooty mold, and do this before the growing season arrives. In severe cases there may also be black spots on the stems of the roses. Make sure to delete them as soon as you see them.

Tips

• An easy method to find out whether your roses need water or not is to put your finger in the soil around the soil near the plant as far as possible. If it feels dry, chances are the roots will need a lot of water.
• Put the fungus killer in a spray bottle so that you can better spray the smooth leaves of the roses.
• Black spots are most common on rose leaves in early summer.

Warnings

• Do not put leaves that have sooty mold in a compost pile. The fungus is not composted and you run the risk of infecting your plants with it. Dispose of them in the trash or burn the infected leaves. Wash all garden tools with soap and water, and rub them with alcohol or another disinfectant.

Necessities

• Fungicide
• Plant sprayer
• Extra plant spray where you put the fungicide in
• Pruning shears