Plant diseases and pests

Plant diseases and pests

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Plant diseases and pests: list and natural remedies, both for ornamental plants and for garden plants.

The insect parasites of plants (aphids, thrips, mites ...) are much easier to manage than plant diseases (molds, fungi, viruses ...). Plant parasitic insects affect the vegetable garden and ornamental plants indicatively only from spring to early autumn while plant diseases can arise at any time of the year.

On this page we will show you the illnesses and i parasites which most frequently attack the garden plants and of the garden. Theindoor plants are not excluded, certainly the home environment keeps them more sheltered than the parasitic insects but they can equally contract a large number of illnesses.

Plant diseases and pests, natural remedies

Plant parasitic insects: symptoms and remedies

Plant aphids and cochineal

To limit infestations it is important to remove the affected parts of the plant. Remedies used in organic farming such as Pyrethrum or Azadirachtin (an active ingredient extracted from the neem tree) can be useful. For more information on natural remedies, please consult the page:Aphids and cochineal, natural remedies


Tiny insects than with theirsstingscause the curling of the young leaves. Among the symptoms we also report a dryness along the leaf margins, white streaks on the petals of the plants that bloom with dark colored inflorescences and decay. Among the natural remedies for thrips we mention the diatomaceous earth.

Plant mites

Infestations on geranium are very frequent. Mites are not insects and in the garden they are among the plant parasites most hated. Between symptoms of an infestation of mites we mention the bronzed appearance of the vegetation, withering and falling of the leaves and blocking of flowering.

Between natural remedies, in case of attack at the beginning, also called pesticides, we would like to point out the possibility of increasing air saturation by spraying water around the foliage of the plants. Another natural remedy against mites is nettle macerate.

You may be interested in:how to use pyrethrum.

Plant diseases: symptoms and remedies

Root and collar rot

When the root system is attacked by fungi, the plant begins to turn yellow, the flowers begin to dry up and slow down the development of the entire plant which could even die. In this case it would be necessary to act with specific fungicides. In case of rot on succulent houseplants, we invite you to read the guideRot of succulents.


The most significant symptom is the appearance of dusty reddish-brown spots (hence the name of thisplant disease!). The spots are rounded, 2 - 3 mm in diameter and initially are present only on the underside of the leaves. In this stage it is possible to contain the disease by removing the affected leaves (eliminate them, do not let them rot on the ground), reduce irrigation and above all avoid wetting the leaves. It can attack garden plants, fruit trees and ornamental plants, first of all the geranium.

Sore white

The white mal is oneplant diseasewidespread in the vegetable garden and in the garden. In case of serious attacks, wettable sulfur or fungicides are used. To eliminate the white sore you can follow the natural remedies seen in case ofwhite pain on roses. In the vegetable garden and in the garden it can attack zucchini, verbena, dipladenia, solanum, surfina ... but also fruit trees such as the apple tree.

Gray mold

Attacks strawberries, tomatoes, roses, grapes, fruit plants, ornamental plants such as geranium and verbena. Gray mold occurs in the form of clusters of grayish-brown mold. It arises where there is poor air circulation (excess vegetation) and in areas where vegetation comes into contact with the ground (this is why gray mold is very popular among strawberry crops).

THE natural remedies they are the most popular because to eliminate this disease we do not intervene with fungicides but by improving the conditions of the crops. Reduce irrigation, perform a thinning pruning eliminating cuttings and residues, if possible, move the plants to a more sunny place.

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