Roses are beautiful flowers that are well known to everyone. And we would all like to have such a flower as a rose in our garden or on the windowsill, but not everyone knows that it is not so easy to care for and treat roses.

All flower diseases and pests of roses are well known to avid flower growers. And for a novice summer resident, the information on this page will be of colossal value. After all, rose diseases and the fight against them concern everyone without exception since the culture is very susceptible to them.

The most common rose flower diseases are infectious burns, spots, gray mold, and powdery mildew. And the most important pests of roses are aphids, leaf rollers, rose sawflies, and caterpillars. It is recommended to begin with looking at the main diseases and pests of roses in the photo, by which you can easily recognize the problem. Then, using the description of the rose disease, the accuracy of the symptom presentation can be identified. After this, all that remains is to choose the appropriate means by which the plants can be treated.

Often, pathogenic fungi, bacteria, viruses, and other microorganisms are the causative agents of infectious diseases of garden roses. What diseases and pests of roses are and how to deal with them correctly, we will tell you in this article.

What are rose flower diseases?

Roses can have many different diseases, here are the most popular ones:

  • An infectious burn is a disease that affects roses after removing the shelter. An arco-red ring appears on the shoots, which then turns black, and the shoot itself gradually dies off. Untimely shelter of roses in the winter contributes to the disease damage to the bark.
  • Various spots (black, phyllotactic, septoria spots) appear, as a rule, in the middle of summer. The spots are of various colors and shapes, and the leaves turn yellow and fall off. Spots develop with increased soil and air humidity, lack of potassium, and excess nitrogen.
  • Powdery mildew is one of the flower diseases that more often appears with high air humidity, with sharp fluctuations in day and night temperatures, excessive nitrogen fertilization, and potassium deficiency in the soil. Leaves and young shoots are affected. White bloom appears first and then gray spots. Leaves curl, buds do not open.
  • Gray rot or botrytis. The causative agent of gray rot is the fungus Botrytis cinerea, which infects about 200 different plant species. In roses, mainly the buds with pedicels, the ends of young stems and leaves suffer from gray rot. In wet weather, they are covered with a gray, fluffy bloom. The buds on roses affected by Botrytis do not open; they rot and fall off. Small brown spots appear on the petals; the leaves chew and also fall off.

Rose pests and how to deal with them

The most common rose pests are:

  • Aphid
  • Shield
  • Leafroll
  • Pennitsa
  • Rosaceous dustbag
  • Caterpillars
  • Chafer
  • Thrips
  • Rose leafhoppers

You need to monitor your roses carefully and prevent the spread of flower diseases and pests of rose leaves since it is not difficult to collect the emerging caterpillars or beetles while they are in single specimens. Noticing a ladybug in the garden, transfer it to roses, let it fight aphids.

Roses can be protected from pests using biological techniques. Also, use protective plants. So, the rose garden can be knocked out, for example, with marigolds or nasturtium - they scare away the nematode and are effective against thrips. You can add ornamental bows to planting roses, which will scare away harmful insects and help cope with diseases. Medicinal marigolds are grown among vegetables and flower crops to combat nematodes, ticks, fusarium, butterflies, thrips. The parsley border is used as a snail deterrent.

You can also use chemicals to control rose pests. You can buy them at any flower or gardening store or order them at any online store. It is dangerous to use chemicals against rose pests since they persist in the soil of the site. But in some cases, it is simply necessary! 

We hope that after reading our article, you learned what flower diseases and pests roses have. Now you can easily solve any problems in this regard.

FAQ 

  • How to protect roses from pests?

Roses can be protected from pests using biological techniques. Also, use protective plants. So, the rose garden can be knocked out, for example, with marigolds or nasturtium - they scare away the nematode and are effective against thrips. You can add ornamental bows to planting roses, which will scare away harmful insects and help cope with diseases.

  • Why do roses have leaves shining?

One of the first signs of damage on roses is the nectar on the stems and leaves, which they secrete. This nectar is a shiny, sticky bloom, like a spray of syrup that needs rinsing off to avoid sooty fungus contamination of the roses.

  • How to properly handle roses?

Temper the rose by removing the covering material gradually, starting from the north side. This way, you can avoid burns from the bright spring rays. If the sun is shining especially brightly, at first, you can shade the bush. When a stable plus is established on the street, you can remove the cover completely.

  • What are the causative agents of infectious diseases in roses? 

There are many different infections that can cause disease in roses, some of which are: pathogenic fungi, bacteria, viruses, and other microorganisms are the causative agents of infectious diseases of garden roses.

 

March 03, 2022 — Alexandr Oleynik