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Daisies look rather robust with their rural charm. And yet the blooms are often also affected by fungal diseases and insect pests.
Daisies always give gardens a sense of rural idyll. They are reminiscent of flowering meadows and field strips.
The flowering perennials seem to be particularly robust. Nevertheless, they are not spared from diseases and can also be affected by sucking pests. However, the harmful images and their causative agents are easily recognized and can be effectively treated. Nevertheless, it is advisable to take a closer look at the marguerite shrubs from time to time.
Mold and root rot
There would be mold on the one hand. It usually occurs when daisies are too wet, so they are overly watered. It may form after a short time at roots and leaves mold. The plant looks stunted and its leaves get brown spots. In addition, the musty odor emanating from the plant is a definite feature of the decaying mold. Most affected are daisies in planters.
If you detect such a mold, then you should absolutely dry your plant. They take their perennials from the pot and remove rotten roots and fallen leaves. Now rinse the roots with clear water and then let it dry slightly in the air. Then plant their marguerites with new soil in the pot.
By the way: Daisies like a well-drained soil, both in the field and in the pot. You should therefore mix some sand under the fresh, highly compost-containing potting soil and then potted their perennial.
On the other hand, the marguerite is attacked by the leaf blotch. This usually occurs when the plant is too shady and too moist. This fungal disease causes black or brownish spots on the leaves. Affected leaves should be promptly removed and disposed of with household waste.
Do not throw any parts of plants on the compost that have been attacked by a fungal disease. The spores of these fungi are resistant and survive the composting harmless. You can later infect the soil in the garden again. Additional treatment of the marguerite with a fungicide for the leaf spot disease is advisable.
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The mildew is one of the most common fungal diseases in the garden at all. Its spores, which are mainly transmitted by the wind, find in humid weather an excellent breeding ground on the plants.
Affected daisies can be recognized by the light gray to white coating on the leaves. It is recommended to spray the diseased perennial with a water-milk mixture. To do this, mix about nine parts of water with one part of Vollmich. Use this solution to spray your daisy. When the mixture has dried on the leaves, rinse the plant with clear water.
They continued this treatment three times in the next few days.
Sucking pest insects
Eating and sucking noxious insects can affect daisies badly. They include aphids, spider mites and white moth sign lice.
Aphids leave sticky spots on the leaves. In addition, the leaves curl up and eventually wither away.
Against this voracious leaf pest a solution of soft soap and water has been proven. With this, the marguerite is sprayed several times in succession. A stinging nettle extract is also extremely effective for the control of aphids.
Yellow-stained leaves and webs on the underside of leaves indicate an attack of spider mites. They can be easily destroyed with pesticides. Garden centers provide pesticides with biological as well as chemical substances.
The damage pattern of moth sign lice is easily recognizable. Affected leaves turn yellow and dry.
Like aphids, moth shield lice can be treated with a solution of soft soap and water.
Another tip: These harmful insects are eaten up by ladybirds and parasitic wasps. Both beneficials are available from specialist retailers. They can also be ordered online.