Rosemary Romarin

Growing environment
Rosemary likes warm climate, but it grows slowly in the high temperature period of flat land in Taiwan, China, and the temperature without cold current in winter is more suitable for its growth. In terms of water supply, the leaves of rosemary are leathery and can withstand drought, so the soil planted with sand and good drainage is more conducive to growth and development. It is worth noting that rosemary grows slowly, so the regeneration ability is not strong.
Propagation method
Seed propagation
Generally, seedlings are raised in greenhouses in early spring. Both soil method and hole tray can be used to raise seedlings. The nursery bed should be prepared first. The seedling bed can be flat or small high bed, the bed soil should be broken and raked flat, the fermentation base fertilizer is applied, and the sole water is poured. Broadcast or drill sowing is acceptable. However, the seeds should be sown thinly as far as possible, or mixed with fine dry soil, sown on the seedling bed, and poured with small water to make the seeds fully in contact with the soil. The seeds have good light, the seeds are directly planted on the medium, without covering, and the small arch shed is built on the plot surface, which ensures the ground temperature and makes the soil surface not easy to harden.
The seeds grow on water under the seedbed, but keep the top layer of the soil moist at all times. When the bud top is unearthed, water again, with small water irrigation as the principle. The optimum temperature for germination is 15-20 degrees Celsius. Germination takes about 2-3 weeks. When the seedlings grow to about 10 cm, about 70 days, you can colonize.
For seedling cultivation in the pot, the turbage and vermiculite can be sown by mixing them in a ratio of 3:1. Cover with a thin layer of vermiculite, pour once permeable. Put up a small arch shed, and then manage the same soil method to raise seedlings. The difference is that after the rosemary emerges, it is necessary to often move the hole plate, so as not to insert the root into the ground along the hole below the hole plate, and injure the root when planting.
Rosemary bud rate is very low, generally only 10%-20%, in the first year, the growth of rosemary is extremely slow, even in the autumn, the plant size is not much bigger than the plant when it was just planted, the formation of a large number of production in 2-3 years later, the speed is very slow. Therefore, asexual reproduction is generally adopted in production. However, the seed begins to cultivate, the smell is more fragrant, so what kind of propagation method is used depends on the need. [3]
Cutting propagation
It is usually carried out in winter to early spring. Fresh and healthy stems that have not been completely lignified are selected as cuttings. About 10-15 cm from the top are cut, about 1/3 of the leaves below the branches are removed, and the leaves are directly inserted in the medium. The medium is kept moist, and the roots will take place in about 3-4 weeks. [3]
layering
Take advantage of the characteristics of the rosemary stem that can produce indeterminate roots, bend the branches of the plant close to the ground and cover the soil, leaving the top in the air, to grow new roots, cut from the mother, form a new individual, and settle into the open.
Primary value
Industrial value
Rosemary is a precious natural spice plant, the growing season will emit a fresh smell, a refreshing effect. Its stems, leaves and flowers have a pleasant fragrance, and the fragrant oil extracted from the flowers and shoots can be used to make cosmetics such as air cleaners, perfumes, and soaps. The most famous toner is made with rosemary, and it can be used in drinks, skin care oils, hair growth agents, and laundry creams. [5]
Medicinal value
Rosemary has a calming, refreshing, waking effect on indigestion and stomach pain have a certain effect. After it is mashed, soaked in boiling water and drunk, 2 to 3 times a day, it can play a sedative and diuretic role. It can also be used to treat insomnia, palpitations, headaches, indigestion and other diseases. It can be used externally to treat injuries and arthritis. It also has the function of strong heart, promoting metabolism, and promoting blood circulation of peripheral blood vessels. [3]
It also improves speech, vision, and hearing disorders, enhances attention, treats rheumatic pain, strengthens liver function, lowers blood sugar, contributes to the treatment of arteriosclerosis, and helps paralyzed limbs to regain the ability to move. [3]
Research from Northumbria University in the UK shows that the unique smell of rosemary can enhance people's memory, improve retrospective memory and forward-looking memory ability. Rosemary gets its distinctive smell from a compound in the plant called cineole. This particular compound contributes to the synthesis of memory-related chemicals in the brain and therefore enhances memory to a certain extent [6].
Edible value
Has a strong astringent effect, conditioning greasy skin, promote blood circulation, stimulate hair regeneration. Improve hair loss (fasting for pregnant women).
Rosemary is a spice often used in Western food, especially in steak, potatoes and other dishes as well as baked products. Sweet with pine aroma smell and flavor, fragrant, sour sweet.