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Home remedies for fungal diseases: You can fight blackspot on roses with baking soda

2022-06-26T14:20:13.805Z

Rose diseases: Combat blackspot with baking soda Created: 06/26/2022, 3:00 p.m By: Ines Alms One of the most common rose diseases is black spot, which appears as black spots on yellow leaves. He can be fought with baking soda. Munster – Black-brown spots that grow larger and have an irregular border on the upper side of the leaf of the rose are a bad sign: this is most likely black spot diseas



Rose diseases: Combat blackspot with baking soda

Created: 06/26/2022, 3:00 p.m

By: Ines Alms

One of the most common rose diseases is black spot, which appears as black spots on yellow leaves.

He can be fought with baking soda.

Munster – Black-brown spots that grow larger and have an irregular border on the upper side of the leaf of the rose are a bad sign: this is most likely black spot disease, also known as black spot disease.


When the leaves turn yellow and fall off, the roses often have no leaves, even in midsummer.

High time to act, the home remedy baking soda helps.

Rose diseases: Combat blackspot with baking soda

Black spot is one of the most common rose diseases and is characterized by black spotted leaves.

(Iconic image) © imagebroker/Imago

An important rose disease is blackspot (Diplocarpon rosae), a common fungus that primarily affects roses.

It can spread quickly, especially in wet weather.

Before a pesticide is used if the infestation is too severe, there is a home remedy that can be used to combat blackspot in the case of a mild infestation: baking soda.

In principle, this is a cheap home remedy against pests in the garden.

Dissolving two tablespoons of baking soda (three to five tablespoons for severe infestations) in one liter of water and spraying the roses with the solution every ten to 14 days is said to help against blackspot.

Only spray the diseased areas.

A natural plant decoction made from field horsetail is also said to help fight blackspot and other garden pests.

Further measures against blackspot: Proper watering and ADR roses

The plant protection service of the North Rhine-Westphalia Chamber of Agriculture also recommends the following measures to prevent the aggressive fungal disease from spreading to roses:

  • Pick off diseased leaves as early as possible and dispose of them in the household waste (not in the compost!).

  • For new plantings, it is advisable to select the most robust rose varieties with the so-called ADR seal.

    Because there are differences in the rose varieties in terms of susceptibility to the fungus, ADR roses are usually particularly resistant, productive and healthy.

    This is especially true for bedding and ground cover roses.

  • Plant roses in a sunny location so that the leaves dry off quickly after rainfall.

    Do not water the roses from above (especially not in the evening hours), as this greatly encourages fungal diseases such as blackspot.

  • A balanced, needs-based fertilization strengthens the plants, for example with wood ash, which contains many nutrients.

You can find even more exciting garden topics in the free 24garten.de newsletter, which you can subscribe to here.

In order to discover blackspot early, you should regularly check your plants for an infestation from May onwards.

If the disease is unstoppable, you should treat the plants with the appropriate fungicides to prevent the problem from recurring the following year.

Source: merkur

All news articles on 2022-06-26

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