Propagation methods and planting techniques of Rosemary

Rosemary is a valuable natural spice plant, which emits a delicate fragrance during the growing season, which has a refreshing effect, pleasant fragrance from stems, leaves and flowers, and aromatic oils extracted from flowers and twigs. it can be used to mix cosmetic materials such as air cleaners, perfumes and soaps, which is of great cultivation value. Let's take a look at the planting techniques of rosemary.

Growth habits of Rosemary

Rosemary is native to Europe and the Mediterranean coast of North Africa, and is mainly cultivated as a cash crop in southern Europe. It was introduced in China during the Cao-Wei period, and now it is mainly planted in most parts of the south and Shandong. The nature likes the warm climate, but the growth is slow in the high temperature period in Taiwan, and the temperature without cold current in winter is more suitable for its growth. in the aspect of water supply, the leaves of rosemary are leathery and can tolerate drought. therefore, the cultivated soil is rich in sand to enable good drainage is more conducive to growth and development, it is worth noting that the slow growth of rosemary, so the regeneration ability is not strong.

Propagation techniques of Rosemary

1. Sowing: seedlings are generally raised in the greenhouse in early spring, either by soil method or by burrow tray, but the germination rate is very low, generally only 10% to 20%, and the growth of rosemary is very slow in the first year, even if the plant size in autumn is not much larger than that when it was first planted, the formation of a large amount of yield will be very slow after 2-3 years. Therefore, asexual reproduction is generally used in production. But from the seed cultivation, the smell is more fragrant, so the use of breeding methods, depending on the needs.

2, cutting: Rosemary cutting propagation is mostly carried out from winter to early spring, select fresh and healthy stems that are not completely lignified as cuttings, cut off about 10-15 cm from the top, remove about 1 blade 3 leaves below the branches, and directly cut into the medium, the medium remains moist, about 3 to 4 weeks will take root, 7 weeks later can be planted to the open field, the lowest night temperature of cutting is 13 degrees Celsius.

3. Striping: rosemary striping propagation mainly makes use of the characteristics that rosemary stems can produce adventitious roots, bending the branches close to the ground to cover the soil, leaving the top in the air, waiting for new roots to grow, cut from the mother to form new individuals, and planted in the open field.

Planting techniques of Rosemary

1. Soil preparation: before transplanting, rosemary can be transplant by dipping the flat land into the pond according to the row spacing, applying a small amount of base fertilizer, and then covering the base fertilizer with thin soil. Usually, the transplanting seedlings in the field are the mother seedlings that take root and survive by transplanting branches. The row spacing of the transplanted plants is 40 × 40 cm, and the number of plants per mu is 4000 × 4300. The planting season is available all the year round in the middle and south of Yunnan Province, and it is the best in spring and autumn.

2. Planting: rosemary is best planted on cloudy, rainy days and when the sun is not strong in the morning and evening. After transplanting, it is necessary to pour enough fixed root water, and do not dump the seedlings when watering. If there is lodging, it should be righted and stabilized in time. Rosemary was watered for the second time 5 days after planting (depending on the dry and wet soil). After the seedlings survive, watering can be reduced. It is found that dead seedlings should be replanted in time, and the distance between the ponds should be taken as a straight line to facilitate ventilation.

3. Fertilization: Rosemary is relatively resistant to cristae. At seedling stage, a small amount of compound fertilizer is applied after ploughing and weeding according to different soil conditions. fertilizer should be covered with soil after fertilization, and quick-acting fertilizer is applied once after each harvest, mainly nitrogen and phosphate fertilizer. generally, 15 kg of urea per mu and 25 kg of common superphosphate.

4. Pruning: Rosemary can be pruned 3 months after planting. Excessive strong pruning often causes the plant to no longer sprout, and it is safer not to exceed half of the branch length at each pruning. Although rosemary plants have small buds in each leaf axil, these axillary buds will also develop into branches with the extension of branches in the future. when they grow up, the whole plant will not only appear messy because of the horizontal branches, but also vulnerable to diseases and insect pests due to poor ventilation. Therefore, regular pruning is very important.

5. Harvest: Rosemary can be harvested for many years after one planting, mainly branches and leaves, which can be folded by scissors or directly by hand. However, special attention must be paid to the fact that the juice from the wound will soon become viscose, which is difficult to remove, so gloves and long-sleeved clothing must be worn during harvest. The harvest times can depend on the growth situation, generally, it can be harvested 3 times per year, and each harvest is at least 250 kg per mu.

6. Diseases and insect pests: Rosemary in a humid environment, root rot, gray mold and other common diseases. If the plant wilts when the substrate is still wet, the plant needs to be removed from the greenhouse immediately. The most common pests are red leaf mites and white whitefly, and the most ideal method is to use biological control. We should focus on prevention, we can start from the sanitary condition, appropriate water management, reasonable temperature and light, and need frequent observation to eliminate sick and weak plants in time.

How to raise rosemary and the method of breeding and breeding of rosemary

Rosemary likes a warm and humid environment, grows slowly at higher temperatures, and grows faster when the weather is sunny in winter without a cold spell. There are more rosemary leaves, which are leathery leaves, all of which are drought-tolerant and can meet their water needs by keeping the soil slightly moist. However, the planted soil should choose the one with better drainage, which is more beneficial to its growth.

How to raise rosemary (basic culture method) rosemary: the choice of flowerpots

Rosemary is a kind of vanilla, like cold and dry environment, flowerpot is very important for its growth. The air permeability of the unglazed tile basin is the best and can be taken into consideration. As for the size of the flowerpot, about 20 centimeters in diameter will be fine. Too large, the amount of water is not easy to control, coupled with the slow growth of rosemary, do not need too much room for growth.

Cultivation of rosemary: soil requirements

For soil, ordinary garden soil is enough. Add a small amount of fertilizer to the soil before planting.

Cultivating Rosemary: fertilization method

It is enough to apply fertilizer two or three times a year, using rotten organic fertilizer in the soil at the edge of the flowerpot. It is OK to apply thin fertilizer frequently, but you don't need too much fertilizer at one time. Specific according to the growth of the plant, appropriate fertilization.

Cultivation method of Rosemary Rosemary: watering method

If you water it, you need to water more in summer. generally, when the temperature is high in summer, do not water at noon, once in the morning and in the evening. In other seasons, it is usually watered once a week. During maintenance, it is watered according to the condition of the basin soil. If it is dry and white, it needs watering.

Raising Rosemary: temperature Control

Rosemary is a relatively hardy plant, which can be put on a semi-enclosed balcony in winter. There is no problem around-5 ℃. So there is no need to take measures to keep warm in winter. But the winter temperature in your area is below-10 ℃, so it is recommended to move indoors. The temperature is high in summer, so it should be ventilated and cooled in time to promote its growth.

Matters needing attention in rosemary culture 1. Do not pour water

In fact, flower friends water according to experience. Flower friends who raise rosemary for the first time need to pay attention to the high temperature in summer, although they need more watering, but they cannot be watered, and the plants are easily wilted and their growth slows down. In addition, this kind of situation will also occur in perennial plants if they are not properly watered.

2. Don't use chemical fertilizer

Rosemary needs to apply enough fertilizer after flowering to promote its long-lasting flowering, but it is best not to use chemical fertilizer to avoid burning seedlings. Usually grow at home, you can also pour a little fermented rice water.

3. Pest management

In humid environment, root rot and gray mold are common diseases of rosemary. If the rosemary plant wilts while the substrate is still wet, the plant needs to be removed from the greenhouse immediately. The most common pests are red leaf mites and white whitefly. At present, the most ideal method is to use biological control.

4. Rosemary propagation

The suitable propagation methods of rosemary include sowing, cuttage, striping and so on. Rosemary seeds germinate slowly and have a low germination rate, so they are usually used only when introducing new varieties. During the rooting period, the suitable temperature in the greenhouse is 22 ℃, and the cuttings should be sprayed frequently, but too much moisture will cause the top of the cuttings to rot and the roots produced are not strong enough. In the first 10 to 14 days, cuttings begin to take root, and special attention should be paid to preventing cuttings from wilting.

How to raise rosemary, the culture methods and matters needing attention of rosemary

Rosemary originated from the Mediterranean coast of Europe and Africa, and was introduced to China in the Cao Wei period. Rosemary flowers and leaves can extract essential oils and oxidants, like warm climate, are not cold-resistant, and do not have strong regeneration ability. This article will share with you about the breeding methods and points for attention of rosemary.

How to raise rosemary?

Rosemary can be propagated by seeds, cuttings and strips. The management can be carried out in an extensive way, and more can be planted in the plots with good drainage.

The transplanting of rosemary is best carried out in the weather when the sun is not strong, watering according to the thirst of the soil, and then reducing watering after the seedling growth is stable, pay attention to row spacing when planting in the field, and pot culture should also be placed in an open place to facilitate ventilation and reduce the occurrence of various diseases.

Rosemary can also survive in poor soil conditions, according to the soil conditions to apply a small amount of compound fertilizer, fertilizer should be covered after fertilization, field planting in each harvest after the application of available nitrogen and phosphorus fertilizer.

After three months of transplanting, rosemary can be pruned. Reasonable pruning can stimulate flower bud differentiation, make plant branches grow orderly and improve ventilation conditions.

Matters needing attention in culturing Rosemary

Rosemary is not a delicate flower and can be managed extensively, but the humid environment is most likely to cause diseases such as root rot and Botrytis cinerea. It is necessary to isolate the diseased plants immediately to avoid large-scale spread. For common insect pests, focus on prevention, we can start from the sanitary condition, water management, light temperature and other aspects, timely observation, take necessary measures, timely elimination of diseased and weak plants.

Rosemary has high industrial value, medicinal value and edible value. It is a symbol of memory and memorial. The above are the breeding methods and precautions of rosemary. I hope I can help you.

Extended reading:

Rosemary culture methods, fertilization techniques, flower language meaning, efficacy and function