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How to Get Rid of Spider Mites

ritau
2020年06月15日
Spider mites (Class Arachnida) are tiny sap-sucking plant pests. They attack the underside of leaves and suck the vigor from the plant; with large infestations they may even kill a plant. As soon as you spot an infestation, it's time to take charge and get rid of them! You can use biological control methods or chemical control methods to deal with a spider mite infestation.



1. Look at the surface of the leaves. If your plant is indeed infested with spider mites, the leaves may have yellow blotches on them. When light falls on the leaves, you may see a silvered look or even streaks of bronze or silver.
-While mites usually attack the underside of leaves, they can sometimes get greedy and also eat the upper side of leaves and flowers. Eventually, the mites will suck holes right through the leaves - providing the most obvious evidence of infestation.
-Even if you can't find holes in the leaves, your plant may still have spider mites, so keep an eye out for other signs of infestation.
-Other signs of mite damage include distortion, deformation, wilting, spotting, streaking or discoloration on the surface of the leave. If the mite damage gets particularly bad, the leaves may start to fall off.


2. Check for white webbing on the plant. This is a giveaway sign of some spider mites. The webbing usually clusters around feeding areas. Note that not all species of spider mite will produce webbing though.

3. Confirm the presence of spider mites. Spider mites are so small, they can be very difficult to see. However, one method you can use to confirm their presence is to take a sheet of white paper, place it beneath the plant you suspect to be infested and and lightly shake the stem of one of the leaves.
-A certain number of the spider mites should fall onto the paper. They can be viewed more easily with a magnifying glass.
-Spider mites come in a variety of colors, including red, green, yellow and brown. They have eight legs and tend to move quite slowly.
-Be on the lookout for spider mites with spots on their backs - these are known as two-spotted spider mites and can be particularly hard to get rid of.

4. Be particularly vigilant with certain species of plants. There are some plants which spider mites seem to favor more than others.
-In particular, pay attention to possible infestations on miniature roses, fruit trees, bananas, potted begonias, beans, mint, broad-leafed weeds, strawberries, frangipani and indoor houseplants.
-Be aware that the two-spotted spider mite has been known to infest over 100 different species of plant.
5. Be especially alert during dry and dusty weather conditions. These are the conditions where spider mites can cause the most damage, as they are thirsty and are seeking moisture from the leaves of the plant. This also means they are very attracted to anything grown under glass, including plants sitting inside on your windowsills.
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