Pests and control methods of dogtooth flower

Pests of dogtooth flower: aphids

symptom

Aphids are 1.5-4.9 mm long, most are about 2 mm long, and are sometimes covered with wax powder but lack wax flakes. Antennae have 6 segments, a few have 5, rarely have 4, the sensory circle is round, rarely oval, and the tip of the last segment is often longer than the base.

Aphids are the fastest reproducing insects, and can reproduce 10 to 30 generations a year. Female aphids can reproduce from birth and do not need males to reproduce.

Aphids use their mouth needles with sucking mouths to pierce the epidermis of plants and suck the juice from the tender leaves of the plants, causing the plants to grow slowly. The secretions of aphids also attract ants.

Prevention and treatment methods

To eliminate aphids, it is necessary to start from the wintering period of flowers, which can achieve twice the result with half the effort. If we only rely on spring and autumn when aphid damage is most serious, the prevention and control effect will not be significant.

Newly introduced flower seeds and seedlings must be strictly inspected to prevent the invasion of new pests, and the soil and flower pots must be disinfected to kill remaining insect eggs.

In combination with pruning, the remaining flowers and dead leaves where aphids have lived or where their eggs have hibernated should be removed and burned in a centralized location.

When a small number of aphids are found, you can brush them clean with a brush dipped in water, or tilt the potted flowers under running water and rotate them to rinse them. This will not only kill the aphids, but also clean the leaves, thereby increasing their ornamental value and promoting leaf respiration. If conditions permit, you can also use natural enemies such as ladybugs and lacewings for prevention and control.

Pests of dogtooth flower: thrips

symptom

Thrips are common insect pests that mainly affect the growth of leaves and flowers, causing leaf deformities, yellow spots, and cessation of plant growth.

Prevention and treatment methods

When caring for dogtooth violets, you should pay attention to promptly cleaning up the host plants of thrips, such as weeds. It is also necessary to spray chlorpyrifos, seven-star emulsion, insecticide aqueous solution, and wind and thunder stimulant for prevention and control.