What plants at home repel mosquitoes best?
Evening primrose, also known as cordate telosma, is native to tropical America. Leaf blade cordate, margin pilose. Every summer and autumn, clusters of yellow-green bell-shaped flowers will bloom in the axils of leaves, and when they go to the treetops in the same month, they will float out bursts of fragrance, which makes mosquitoes afraid. It is a good mosquito repellent.
Most of these flowers are elegant and beautiful, easy to grow and inexpensive. Besides, when they bloom in summer, they are green and white, which makes them look cool. The aroma of flowers such as cordate telosma often looks refreshing at first glance, but it may cause uncomfortable reactions because it is too strong after a long time.
2.lavender
Lavender is a blue-purple flower. Originated in the Mediterranean, it likes to be dry, and its flowers are like wheat ears, which usually bloom in June. Lavender itself has insecticidal effect. People usually put sachets made of lavender in the cupboard, and some put them in the bedroom to repel mosquitoes.
common nepenthes
Nepenthes is a typical insect-eating plant with strange leaves and a long round "insect-catching bottle" hanging at the top. The bottle mouth has a lid that can be opened and closed. There are dozens of pitcher plants, and different kinds of insect traps are different in shape, size and color. Nepenthes can be used as medicine to treat hepatitis, stomachache, hypertension and cold, and it is also an expert in mosquito catching.
4.geranium
Geranium geranium is full of flowers and can adapt to all parts of the country. In the hot season, place it in an outdoor cool environment; Watch it in a bright room in the cold season. Geranium has a unique smell that makes mosquitoes and flies run away.
5. Qilixiang
Qilixiang is a small shrub that is evergreen all the year round. It is umbrella-shaped, with many branches, bright leaves and dense gray leaves. After flowering, it can bear red berries, which adds beauty to the simple room. Touch its leaves, you will feel a thick sweet fragrance, which has a good mosquito repellent effect.
6. Cordyceps sinensis
Cordyceps sinensis is a kind of compositae herb, which can grow to 1 m high, has small yellow flowers and hundreds of flower heads, and there is mucus around each flower head. As long as a small mosquito falls on it, it will be stuck, and the body of the worm will be slowly digested by it as its growth nutrition. If dust sticks for a few days, it will be digested. Put a pot in the pot to catch mosquitoes and vacuum at home.
7. Mosquito repellent
Mosquito repellent smells like lemon. If kept indoors, mosquitoes will escape. The reason is that mosquito-repellent grass contains a special "small raw material". It uses transgenic technology to implant citronellal gene structure with mosquito-repellent gene into "vanilla" and uses its own unique release system as a carrier to continuously release citronellal into the air. At the same time, plant DNA (gene) structure with fresh smell and air purification function is implanted to form a "natural evaporator" with overflowing fragrance. Especially in the hot summer, it will make people feel refreshed and relaxed. After testing, it has good mosquito repellent effect, is harmless to people and animals, and can repel hundreds of mosquitoes. Mosquito repellent is a perennial herb, its survival temperature is above MINUS 3 degrees Celsius, and it can be cultivated indoors and outdoors. Generally, the higher the temperature, the stronger the fragrance and the better the mosquito repellent effect.
8. chasing flies and plums
Its branches, leaves and flowers give off a sensitive smell of mosquitoes and flies, which has a strong repellent effect and does no harm to human body. It not only has a good effect of repelling mosquitoes and flies, but also has beautiful colors, such as red, yellow and white. Flowers are often yellow or pink at first, then gradually turn orange or orange, and finally turn red, so they are also called "seven mosquito repellent flowers".
9. mosquito net vanilla
It is an aromatic geraniaceae plant, its genetic structure has been changed, and it was introduced from Australia in recent years. Plants are drought-tolerant, can grow and mature within half a year, and can survive if properly maintained 10 year? 15 years, and its branches and leaves can be changed at will, which has high ornamental value. Mosquito net vanilla gives off a fresh and elegant lemon fragrance, which has a good mosquito repellent effect indoors, but it has no toxic side effects on human body. The higher the temperature, the more fragrance it emits, and the better the mosquito repellent effect. According to the test, a pot of mosquito net vanilla with a crown width of more than 30 cm can drive away mosquitoes in a room with an area of more than 10 square meter. In addition, a plant called pyrethrum contains pyrethrins, which can also effectively repel mosquitoes. [Edit this paragraph] The new mosquito repellent tree belongs to the deciduous tree of Rutaceae and is a new species of mosquito repellent tree discovered and introduced in recent years. It uses citronellal, which is unique to leaf surface, to diffuse into the air through high-temperature evaporation to achieve mosquito repellent effect.
First of all, it has the following characteristics:
1. Ecological mosquito repellent: The new mosquito repellent tree is rich in a variety of aromatic natural essential oils, such as citronellal and citronellol, which have mosquito repellent effect. When mosquitoes smell this smell, they will be paralyzed and lose the function of biting. The higher the temperature, the stronger the smell and the better the mosquito repellent effect.
2. Indoor mosquito repellent: In summer evening, pick the branches and leaves of mosquito repellent trees in the scenic spot and smoke them indoors once. 10 No mosquitoes for half a day.
3. beautify the environment: the landscape mosquito repellent tree is 3-5 meters high, with straight trunk, lush foliage, fast growth and extensive management. It can be planted in front and behind houses, courtyards, parks, streets and roadsides, which can not only repel mosquitoes, but also achieve the effect of greening and beautifying.
Second, the morphological characteristics
Shrub or small tree, plant height 3-5 meters, green shoots, reddish brown old branches, pubescent, with obvious lenticels. Leaves opposite, odd pinnate compound leaves. Leaflets 5-9, elliptic, tapering at the top, entire with obtuse serrations. Thymus cymose, terminal.
Third, planting techniques:
It can be planted from defoliation in winter to germination in early spring. Dig a pit where it needs to be planted, the width and depth of the pit are 80 cm, and apply about 20 kg of decomposed compost or soil miscellaneous fertilizer, and mix it evenly with the subsoil as base fertilizer. When planting seedlings, they should be planted correctly and firmly, and filled with soil for compaction. Pour a root of water thoroughly.
Fourth, reproduction.
Because the seeds of new mosquito repellent trees are undeveloped and cannot be used as seeds, they are rarely propagated with seeds. Instead, it adopts the asexual reproduction method of cutting roots. In late February, select strong mother plants over 4 years old, dig lateral roots with a diameter of more than 0.5 cm, cut into root segments with a length of about 15 cm for cutting, flatten the upper end and cut the lower end into inclined planes, and cut according to the row spacing of 20 cm and the plant spacing of 10 cm. After insertion, water is poured and covered with plastic arch shed to increase the temperature and keep moisture. After the cuttings take root and sprout, remove the arch shed, manage the seedbed, cultivate for one year, and plant in the nursery.
In addition, mugwort and jasmine can repel mosquitoes.