(1) Pick some grass flowers, such as begonia Siji, upside-down Admiralty, a bunch of safflower, chrysanthemum, Dutch chrysanthemum, early Xiao Ju, etc. When they grow to a certain height, pinch off their tops to promote their branching and flowering. Some woody flowers, such as kumquat, should also be picked when the annual branches grow to about 15-20 cm, so as to bear more fruits.

(2) Brushing buds In summer, many flowers often sprout adventitious buds from the base of the stem or branches, which should be erased in time to avoid consuming nutrients and disturbing the plant shape.

(3) In addition to the leaves, some foliage flowers should cut off the old leaves appropriately to promote the development of new leaves and make the leaves more beautiful.

(4) The ornamental flowers, such as dahlias, chrysanthemums, roses, etc., should be thinned in bud and fruit. Too many buds should be thinned out in time; Used for ornamental flowers, such as kumquat, pomegranate, bergamot, etc. When the young fruit grows to the size of soybean, it is necessary to remove the excess young fruit; For some flowers that cannot bear seeds or are not ready to collect seeds, cut off the residual flowers in time after the flowers wither.

(5) Shaping For poinsettia, plum blossom, peach blossom, tiger thorn plum and other flowers, the lateral branches are often bent and shaped in summer to make the plants plump and beautiful.

Eliminate pests and diseases

(1) The common diseases in summer include powdery mildew, anthracnose, gray mold, leaf spot, nematodiasis, bacterial soft rot and so on. Powdery mildew mainly harms rose, plum blossom, peony, chrysanthemum, dahlia, begonia, cucurbitaceae, upside down golden bell and so on. After injury, the plant is short, the tender tip is bent, and the leaves are uneven or curly. Buds, leaves, buds and buds are covered with a layer of white powder, and many small black spots grow. In severe cases, the leaves shrink and dry up, or even the whole plant dies. Anthracnose mainly harms orchids, white orchids, Milan, plum blossoms, rubber trees and cacti.

Most flowers are infected by pathogens, and there are nearly round spots on the leaves, with purple or dark brown edges and light brown or grayish white centers. Small black spots are often arranged on the spots in a wheel pattern. When the disease is serious, the leaves will die. Gray mold mainly harms peony, peony, cyclamen, begonia, upside down golden bell and so on. Leaves, stems, flowers and other damaged parts are brown or purple-brown rot. When the weather is wet, gray mold grows on the diseased spot, and when it is serious, the whole plant dies.

The following methods can be used to prevent and control the above three diseases:

(1) thoroughly remove litter in early spring, cut off diseased schools, leaves and buds in time and destroy them centrally to reduce the source of germs;

(2) Strengthen cultivation management, reasonably fertilize water, pay attention to ventilation and light transmission, make plants grow healthily and improve disease resistance;

② Spraying 50% carbendazim or 50% thiophanate-methyl 500-800 times at the initial stage of onset.

(2) The common pests in summer are biting mouthparts and chewing mouthparts. The former mainly includes aphids, red spiders, whiteflies, scale insects and so on. This kind of pests often gather in leaves, tender stems, flower buds, branches and other parts, and use needle-like mouthparts to pierce flowers to absorb juice, which makes leaves yellow and curly, leading to leaves turning yellow and falling off. The control method can spray 50% dichlorvos emulsion 1000- 1500 times. This medicine is easy to cause phytotoxicity to plum blossom, cherry blossom, azalea, elm leaf plum and other flowers and trees, and these flowers and trees should be banned. The latter mainly includes moths, butterfly larvae, various beetles and underground pests. This pest eats leaves and bites roots, causing plants to wither and die. Control method: spray 50% dichlorvos emulsion 1000- 1500 times, or water rhizosphere 500-800 times.

In summer, the temperature is high and pesticides volatilize. In addition, when the temperature is high, the emission function of the human body is enhanced and the absorption capacity of the skin is increased, so poisons are easy to enter the human body and be poisoned. Therefore, it is advisable to move the flowerpot outdoors in the morning and evening in summer.