A Full Analysis of the Common Pests That Flowering Plants Are Prone to

Many people like to grow some flowers and plants indoors, which both greens the environment and cultivates a sense of pleasure. But flowers and plants are not only a bit delicate to grow, they are also very easily "favored" by small insects, which is both annoying and frustrating. Next, let me introduce several common pests of flowers and plants and their control methods.

Chrysanthemum (detailed introduction)

I. Chrysanthemums easily attract aphids

Aphids are mostly green and black, good at flying, with tubular cornicles, shaped like fleas. They rather like chrysanthemums, redbud, roses, Chinese roses and other flowers. They often gather in clusters on the tender shoots, flowers and undersides of leaves of flowers, sucking sap, causing leaves to shrivel and affecting blooming. Generally, the pest damage begins to become fairly obvious in mid-April.

Countermeasures: When scattered aphids appear, brush them off with a writing brush dipped in water, and the brushed-off aphids should be disposed of promptly to prevent them from spreading. You can also add 40 grams of tobacco powder to 1 kg of water, soak for 48 hours, then filter to obtain the stock solution; when using, add 1 kg of water to dilute it, plus 2-3 grams of washing powder or a little soap solution, stir well, and spray the plants. If using physical methods, you can use cardboard or plastic boards coated with yellow color and glue to trap and kill aphids; or use silver-white tin foil to reflect light and drive the aphids away.

II. Jasmine must be guarded against red spider mites

Red spider mites are obovate, flat on the back and abdomen, and come in red, dark red, orange-red and other colors. Orchids, jasmine, kumquat and others are more prone to red spider mites. They often hide on the undersides of leaves and on flower buds of flowers, causing leaves to lose their green color and wither, and flower buds to shrivel; in severe cases the plant will wither and die. Generally, the pest damage is more serious in June and July.

Countermeasures: Add water at 10 times the amount to orange peel, soak for a day and a night, filter, and spray the plants once a day for 3 consecutive days. In addition, you can also light a coil of mosquito repellent incense and place it in the flower pot, then tie the pot tightly inside a plastic bag; after 1 hour of fumigation, both eggs and adults can be killed. This is a good method that is both economical and quick to take effect.

III. Chinese roses should be kept away from the yellow slug moth

The larva of the yellow slug moth has a yellow-brown head, a yellow-green thorax, and a pair of spines on each side of the dorsal line of each segment. It is mostly seen on camellias, redbud, Chinese roses, Xifu crabapple and others, and often eats all the leaves of the flowers.

Countermeasures: The yellow slug moth likes light rather much and has a strong phototaxis, so you can place a lamp beside the flowers to trap and kill it.

In addition, for the brown, rather pointed small insects that often "attack" plants such as anthurium and cyclamen, and the mosquito-like flies that poinsettia and pansy are prone to, you can spray them in the early stage with garlic juice, chili water, Sichuan pepper water and the like.

Common pest and disease control for flowers and plants

    In May, the following are the more seriously damaging ones: aphids (greasy insects). Hibiscus, ornamental peach, hibiscus, Chinese roses, honeysuckle and others are all easily harmed by aphids. As the temperature rises, they increase and worsen day by day. They must be discovered and controlled early.
Control methods: (1) Spray 40% omethoate or 50% phosmet, diluted with water at 1200-1500 times; (2) for a small number of potted flowers, you can also spray neutral washing powder at 70-100 times.

Red spider mites. The red spider mites on jasmine, hibiscus, asparagus fern, Chinese roses, dahlia and many other flowers mostly begin to cause damage from early April. Control methods: for a small number of potted flowers, you can often wash the front and back of the leaves with tap water, or spray or dip with boiled and cooled flour-paste water at 100-150 times, then rinse once more with clean water after a day or two, which can achieve obvious results.

Scale insects (flower lice). The scale insects on white magnolia, Chinese roses, boxwood and pittosporum mostly begin to hatch and become active from mid-April to mid-to-late May.

Control methods: (1) Before hatching, gently brush off the insect bodies by hand; (2) check frequently, and during the nymph hatching period spray with Kuangshajie at 1000-1500 times dilution.

Damping-off. When the temperature is in the 20s Celsius, newly sown or last-autumn-sown flowers, saplings and some flowers that easily rot at the roots are extremely prone to damping-off if the soil moisture is high. Control methods: (1) Before sowing, use 3-8 jin of 70% quintozene per mu, evenly mixed into the soil; (2) control watering during the tender seedling stage, and do not let the soil become too wet; (3) when diseased seedlings are first found, irrigate with 1% ferrous sulfate or 50% amobam solution at 200-400 times, each at 4-8 jin of the medicinal solution per sq m.

Rust. Crabapple rust is easily and massively infective after rain in April and May; rose rust infects when the rose buds are about to open. Control methods: (1) For rose disease, promptly pick off and burn the yellow diseased buds that sprout first when sprouting, to eliminate the source of infection; (2) during the initial infection period, spray 15% triadimefon diluted with water at 700-1000 times, with obvious effect.

Powdery mildew. Chinese rose powdery mildew, and impatiens and smoke tree powdery mildew, mostly infect in May and June, and in summer easily cause symptoms such as yellow leaves, withered leaves and curved tender shoots. Control methods: (1) Pay attention to ventilation and light transmission for the flowers; (2) apply less nitrogen fertilizer and more phosphorus and potassium fertilizer; (3) during the initial infection period, spray once with 15% triadimefon diluted with water at 700-1000 times.

Common pest and disease control for flowers and plants in autumn