Compared to most houseplants cacti are relatively free of insect pests. One reason is that cacti a waxy cuticle that many bugs have have pervasive problems. Moreover, holding the missing leaves, leaf-eating pests like snails, in the bay. However, a number of insects and other pests damaging cactus houseplants.
Mealybugs are one of the most common pests on cacti. These insects covered in a white waxy protective substance. Appear infested cacti like lice – white, woolly oval lumps on either body or spines of the cacti. Mealybugs I especially like the new growth. When the cactus has little cracks or gaps, such as between the ribs of a barrel cactus, is likely mealybugs congregate there.
Root Mealy Bugs
Similar regularly mealybugs cover root mealybugs are. In a white, waxy coating As the name suggests, root mealy bugs suck plant juices from the roots. Do not feed them if they live in the soil and the appearance of "white mold" around the roots. Through the underground nature of the root mealy bugs, you can not uniquely identify an infestation without repotting the plant. You might only detect cases in which routinely repotting a plant. Suspect root mealybugs if your cactus seems sick or ceases to grow or bloom for no apparent reason.
Scale insects are a pest on rare cacti. They are about the same size as mealybugs or a little smaller. Unlike mealybugs Scale insects are immobile as adults, making it easy to pry them to invest in smaller infestations. The errors themselves are brown. If older die scale insects and fall from the plant, they leave a yellow mark, where they suck the plant juices were.
The same spider mites, which can invade your garden plants also threaten your cacti. Identify an infestation relies more on the search for the characteristic damage than the sight of the mites themselves, you are slow and well below a millimeter in size. Symptoms include poor coloring of the plant body with yellow or brown spots and scabs.