What is the common red spider
The common red spider, whose scientific name is Tetranychus urticae, is the most common polyphagous mite that attacks ornamental plants, vegetables, fruit trees. Gardening enthusiasts know this pest very well, which occurs mainly in summer when the eggs of the females produced in winter meet the best climate for their opening. Considering that a female of this species lays something like a hundred eggs per season, it goes without saying that at the time of hatching these give birth to several generations of common red spiders. This can happen in a few days after their deposition or after several weeks. It all depends on the external climatic condition. The development of the parasite itself is also determined by the environment around it. The mite does not die in winter, it simply slows down its development until summer when the heat accelerates its growth. Generally it nestles in the internal structure of the leaf, to which it removes the sap that it uses as nourishment.
How can you tell if the plant has been attacked by common red spiders? Being very small and hardly visible to the naked eye, it is necessary to look at the damage it causes to discover its presence on the plant. If the leaves have brownish or reddish spots, they have certainly been attacked by the spider mite common red or there is the presence of eggs. Since the mite absorbs the lifeblood of the plant, it will appear a little dry and suffering. The leaves will also have a dying appearance until they turn yellow and fall prematurely. Looking closely at the plant it is possible to notice on the leaves or on the shrub a whitish substance and small cobwebs. The whitish substance is organic waste material that the mite produces while the cobwebs are present as an arachnid. If all these signs are found on a specimen, it must be removed before the plant dies.