Roses Diseases - Causes, Defects and Control


The Content Of The Article:

Roses are found in wrong locations or lack of care for fungal diseases. Here you will find pictures and tips for treatment.

Roses diseases: causes, damage pictures & control

Lush leafy and lush flowering roses are the pride of any hobby gardener. But soon the honor is cracked, as soon as the queen of the flowers is afflicted by rose diseases. The most common diseases of roses include blackspot, powdery mildew and rose rust. These are leaf diseases caused by a fungal infection.

On the other hand, you can take precautionary measures right from the start. Thus, the fungal infestation of roses can already be severely curtailed with the choice of the optimal location and conscientious care. However, he can not exclude this.

In the next 6 sections, we would like to inform you comprehensively about harmful pictures, prevention and disease control of rosacea diseases.

1SternruƟtau

Roses Diseases - Causes, Defects and Control: causes

Damage symptoms:
The infestation of your rose with the star soot mushroom you recognize the radiating black spots on leaves. After some time, the foliage turns yellow and eventually falls off.
Already with the first pile, the lower weakly developed leaves of the plant may be affected. The humid weather in summer offers the star soot ideal conditions to spread strong. So the rose is largely infested in the late summer to fall. In addition, sensitive varieties can completely lose their foliage in rainy years.
Prevention:
Choose a robust, healthy plant when buying. Rose schools already point out in the catalogs the leaf health of every single plant in their assortment. You should also avoid watering the leaves when pouring (shower or sprinkler from above). Finally, infested leaves should be collected and disposed of with household waste.
Control agents:
To keep the fungal infection as low as possible, it is advisable to treat the roses with a fungicide already after the middle / end of the shoot. From mid-June, spray your plants every 14 days.

  • Rose spray Saprol AF
  • Celaflor Mushroom-free Ectivio
  • BaymatWG
  • Cueva mushroom protection

2 powdery mildew

Roses Diseases - Causes, Defects and Control: fungal

Damage symptoms:
The upper leaves, calyx and fresh shoot tips are coated with floury white wipeable coating. Finally, the affected leaves curl and turn reddish. The infestation with powdery mildew occurs mainly in humid weather.
Prevent:
Plant robust varieties in a breezy location. In addition, a caliber fertilizer is recommended. This strengthens the resilience of the rose. Affected areas cut out so that the fungal disease does not spread.
Control agents:
As soon as the first signs of mildew appear, cut out the visible spots and inject the rose every 14 days with one of these fungicides:

  • Rose spray Saprol AF
  • Celaflor Mushroom-free Ectivio
  • Baymat WG
  • Cueva mushroom protection

3Rosenrost

Roses Diseases - Causes, Defects and Control: leaves

  • Damage symptoms:
    Orange-rust-colored spore bearings show up in the spring from April to May on the underside of leaves, which dust when touched.
    Prevent:
    When selecting roses, use varieties with high foliar health. To prevent the spread of rose rust, collect the affected leaves and destroy them with household waste.
    Control agents:
    If you notice an infestation of your roses with the rose rust, then fight it in the 14-day cycle

    • Celaflor Mushroom-free Ectivio
    • Ortiva rose fungus protection
    • Cueva mushroom protection
    • Saprol AF
    • Baymat WG

    4Falscher mildew

    Damage symptoms:
    On the underside of leaves spreads a grayish mold lawn. In addition, dark spots form on the top of the sheet. The infected leaves wither and eventually fall off
    Prevent:
    When buying their roses, choose resilient varieties and place them in an airy location. In order to avoid the spread of downy mildew as much as possible, cut off the infected plant sites.
    Control agents:
    From mid-April to mid-July, the fungus infests the plant. As soon as rose rust appears on the leaves, inject with one of the following antifungal agents every 14 days:

    • COMPO Ortiva
    • Copper lime atempo

    5Botrytis

    Roses Diseases - Causes, Defects and Control: leaves

    Damage symptoms:
    On the flowers are brown or reddish specks. This fungus spreads in high humidity or precipitation over the whole flower. Finally, the pile rots from the flower soil starting. In addition, soft spots on leaves and shoots arise.
    Leaf wetness and a subtropical climate with a relative humidity of over 85 percent and temperatures above 30Ā° C promote the infestation of fungal disease.
    Prevent:
    The location for their roses should be well ventilated, so that the roses can dry out quickly after rainfall.
    Cut off infected parts of plants and destroy them with household waste. To prevent botrytis, avoid using pure nitrogen and loosen the soil more often so that water does not accumulate.
    Control agents:
    At the first sign of Botrytis you inject your rose with the following spray:

    • Neudovital rose fungus protection

Video Board: How To Treat Rust on Rose Leaves.

Ā© 2019 EN.Garden-Landscape.com. All Rights Reserved. When Copying Materials - The Reverse Link Is Required | Site Map