Can mosquito repellent grass (incense leaf geranium) drive mosquitoes? What are the breeding methods and matters needing attention?

Mosquito repellent vanilla, also known as mosquito repellent geranium, is a perennial evergreen herb with strong vitality. It can be cultivated in the courtyards and indoors of families in the south and north, so can mosquito repellent be repelled? What are the breeding methods and matters needing attention?

Mosquito repellent, scientific name fragrant leaf geranium. Herbs perennial, shrubby, up to 1 m high. The stem is erect, 80-90 cm high, grayish green, the base is woody, the upper part is fleshy, densely glossy pilose, fragrant, with strong vitality. Leaves with long stalks, broadly cordate-ovoid, 5-7 palmlobes, lobes redivided, lobes serrated at edges; flowers small, densely umbellules opposite leaves, whole plant steamed aromatic oil, often cultivated as aromatic plants. Because of its fragrance, it is often watched in pots. Originally from South Africa.

Is mosquito repellent useful?

The answer is yes, and there is no definite proof that the aroma emitted by mosquito repellent, nocturnal and other aromatic plants is harmful to the human body, so you can rest assured to breed it. When the plant height is 30 cm and 40 leaves, the mosquito repellent effect is the best.

Mosquito repellent grass can be modeled as bonsai, often placed in offices, bedrooms, business places (restaurants, hotels) to purify the environment, pleasing to the eye, both beautiful and applicable. Mosquito repellent grass emits lemon fragrance all the year round, which combines the fragrance of geranium and citronella. It is fragrant, fresh air and safe mosquito repellent. It is a complete natural mosquito repellent product without any side effects.

I. Culture methods of mosquito repellent grass

1. Soil

Mosquito repellent grass prefers neutral and acidic soil, 6 parts of peat soil, 1.5 parts of vermiculite, 1.5 parts of perlite and 1 part of coal ash are used in 6 months. The PH value is slightly acidic and neutral, and the prepared (PH value 5.5-7) foliage base soil can also be purchased. After six months, mosquito repellent has strong adaptability and can use soil at will. Biennial repellent mosquito repellent grass trunk Lignification, can be trimmed, according to personal preferences random human soil modeling.

2. Temperature

Mosquito repellent grass likes warm and hot, 10 to 25 ℃ is suitable for growth, below 7 ℃, temperature above 32 ℃ is disadvantageous to growth, indoor overwintering temperature is not lower than 12 ℃, lemon fragrance can be distributed normally when the temperature is above 15 ℃, and the higher the temperature is, the stronger the fragrance is. Spraying proper amount of water spray on mosquito repellent grass leaves can make citronella aldehyde release continuously, thus making mosquito repellent grass repellent mosquito repellent better.

3. Lighting

Mosquito repellent grass likes shade and is not tolerant to strong light when growing, especially in summer. It can be planted under trees or shaded places. Family potted plants are usually sprouted indoors.

4. Watering

Mosquito repellent grass should be watered once after changing the basin, usually once in 3-6 days, but not stagnant water, watering should pay attention to the principle of dry and wet. If the surface of the basin soil is white, it should be watered less in summer, and the mosquito repellent grass should be watered once a week. From July to August, we should often spray water to cool down and keep the environment around mosquito repellent grass moist.

5. Fertilization

Slow seedling 10 days after fertilization, spring and autumn is the peak growth period of mosquito repellent grass, usually fertilized once every 15-20 days. In the first ten days of April, after the mosquito repellent grass grows new branches, the thin organic liquid fertilizer is applied once a week, and the mosquito repellent grass will blossom one after another when it is removed from the outside in the last ten days. The high temperature in summer should be less watering and no fertilization, which is beneficial to the development of mosquito repellent root system and improve disease resistance. Family farming can also apply a small amount of cake fertilizer and rice water.

6. Insect diseases

Root rot or stem and leaf rot caused by improper management, followed by leaf shrinkage, black spots, and then the whole plant atrophied. This is caused by too much humidity, too high temperature, poor ventilation or excessive seedling density. Can be sprayed with fungicides such as carbendazim or carbendazim (800 to 1000 times liquid). But do not spray frequently.

2. Nursing methods of mosquito repellent grass

1. Propagation methods: usually sowing and cutting propagation, cutting is easy to survive in spring and autumn. Mainly by cutting, but also can sow tissue culture. The sturdy shoots with terminal buds were cut in April, May or September and October, and the shoots grew 5-8cm. The cuttings were cut after the incisions were dried, and 3 terminal buds were retained. Shading and moisturizing can take root and survive in 20 days. When cultivating new varieties, artificial pollination is often used to collect and sow seeds. At the temperature of 20 ℃, the seedlings will germinate in 10 days after 7 Mel.

After the cuttings grow new leaves, they can be put on the pot, and the neutral culture soil is selected as the basin soil to give sufficient light. Topdressing is done every 10 days during the growing period. Grasp the principle of "no dry, no watering, watering thoroughly". In the high temperature season from July to August, the leaves turn yellow, indicating that the plant is in a state of sleep, put in a cool and ventilated place and prevent rain. When the autumn climate turns cool, the plants return to vitality and enter the period of growth and flowering, when the withered and yellow branches and leaves are cut off and normal water and fertilizer management is carried out. People in late autumn low-temperature greenhouse maintenance, overwintering temperature of more than 5 degrees Celsius. Proper maintenance, flowering as usual, under the condition of long sunshine is conducive to flower bud differentiation and flowering. Spring seedlings can blossom in autumn, autumn seedlings can not blossom until early summer of the following year, and often change pots after autumn flowers fade.

2. Transplanting: 1-year-old branches with strong growth and short internodes were selected to centrally raise seedlings on the seedbed, and then transplanted to the field. This method is generally used in areas with heavy frost in winter, using cold-proof small arch sheds or covering weeds to facilitate safe overwintering, and can be planted in the field after the frost in the following year.

3. Hydroponic culture method

① chooses strong branches for pruning. Choose oblique cut, which can enlarge the water area of the incision. Then cut off the lower part of the leaves and leave the upper leaves.

② drilled a small hole in the foam with a similar thickness of the plant and then inserted the mosquito repellent branch. Inject a certain amount of water into the hydroponic container, and then put the mosquito repellent branches into the hydroponic container. Foam board can not only fix the plant, but also reduce water evaporation. In addition, it should be noted that the length of the branches of mosquito repellent should not be too long. It is recommended to sterilize the aquaculture bottle before use.

③ should change water every four or five days, and pay attention to the cleaning and disinfection of hydroponic containers when changing water. in addition, in order to ensure the health of hydroponic branches, it is also necessary to clean up the rotting or secreted substances, branches and leaf tissues on the branches in time. You can spray a little water on the leaves of the note from time to time. Hydroponic water is recommended to use pure water, or you can put a little nutrient solution into it.

④ daily care in place, generally 15-30 days or so, you can see mosquito repellent grass rooting. If you see the healthy growth of the roots, you can transplant in time. It is not recommended to put them in the sun in the first week after potting. When the plant grows new leaves, you can make sure that the mosquito repellent grows healthily, and then you can put it outside to receive the sun.

4. Matters needing attention in maintenance

The sudden leaf loss of ① in a short period of time is often due to excessive temperature changes or lack of light. The leaves turn yellow and soon fall off, mostly due to insufficient light and too much watering. This phenomenon can also occur when the temperature is too low in winter.

② leaf dry tip or leaf edge scorched, sometimes due to excessive light or dry air, sometimes caused by excessive fertilization or basin soil drying. Branches and leaves grow, mainly because there is not enough light, too much nitrogen fertilizer, improper irrigation, should be transferred to the light, pruning branches.

Yellow or brown spots like water stains appear on ③ leaves, which may be the result of excessive watering and mud spots spattering on the leaves and then exposure.

④ mosquito repellent grows fast and needs to change the basin to increase soil and fertilizer once a year. Usually from February to early March in early spring, the mosquito repellent grass is strongly pruned, leaving only three lateral buds at the base of each branch, and then the surrounding old decaying roots are removed, new fertilized culture soil and applied base fertilizer.

After ⑤ sent out new shoots in the first ten days of April, it applied dilute organic liquid fertilizer once a week, and flowered one after another when it was removed from the outside in the last ten days.

⑥ moved to the scattering light on the inside of the balcony in early June. Courtyard maintenance is transferred to the shade, the east side of the house, or under the shade. Pay attention to the whitening of the soil surface of Xiaopeng and watering when it is 1 cm below the surface of the big basin soil.

⑦ high temperature from July to August should often spray water to cool down, keep the surrounding environment moist, do not accumulate water in the basin. Before the arrival of the early frost in the middle of October, the room temperature in winter was not less than 12 ℃, the light was sufficient, the air was fresh, and the flowers bloomed continuously. Professional cultivation for "May Day" festival for a large number of flowers, can be re-pruned at the end of autumn, into a low greenhouse (less than 10 ℃), maintain sufficient light, water control, moderate ventilation and maintenance.

Matters needing attention in mosquito repellent culture

1. Mosquito repellent grass has the best mosquito repellent effect when the plant height is 30 cm and 40 leaves. If mosquito repellent grass appears yellow leaves, it needs to be picked in time.

2, in the daytime, do not directly let mosquito repellent grass receive sunlight, too exciting sunlight will make the surface of mosquito repellent grass become scorched yellow, it is best to put mosquito repellent grass on the balcony to keep the soil moist.

3. After mosquito repellent grass grows up, it is necessary to change a larger basin for mosquito repellent grass. The root system of mosquito repellent grass is quite developed and can absorb a lot of minerals in the soil.

4. If the mosquito repellent is not properly managed, it will cause root and leaf decay, followed by black spots on the leaves and shrinkage of the whole plant. This is due to excessive watering and lack of ventilation, and a little chlorothalonil solution can be sprayed. And quickly move the mosquito repellent to a ventilated place for breeding.

5. The common short-term leaf loss is caused by the lack of light of mosquito repellent grass. Mosquito repellent grass can be properly placed in places with light for breeding. Mosquito repellent leaves fall off and turn yellow due to lack of water, and this situation may also occur in winter because the temperature is too low. Too much fertilization or too much light will cause scorched yellow leaves, which need to be paid attention to.